Tag: China export controls

  • Yttrium: The 4,400% Price Spike Nobody Saw Coming

    In January 2025, yttrium oxide traded at roughly $6 per kilogram in Europe. By November, it was $270. That’s a 4,400% increase in under eleven months — the most extreme price spike of any critical mineral in the 2025 export control cycle, larger in percentage terms than antimony’s 4x move, larger than terbium’s surge, and orders of magnitude more violent than anything the lithium market has produced in its most volatile cycles. Chinese domestic yttrium oxide, meanwhile, sat at roughly $7 per kilogram — 16% above January levels. The gap between the Chinese and European price was not 50%, not 100%, not 500% — it was approximately 3,700%, an arbitrage that existed entirely because of China’s April 2025 export licensing requirements and the market’s inability to move material across the border. A rare earth trader told Reuters that their yttrium stocks had fallen from 200 tonnes to 5 tonnes. Another said they were out of stock entirely. The Aerospace Industries Association told Washington that yttrium was essential to the world’s most advanced jet engines and that the supply chain depended almost entirely on China. A semiconductor industry source rated the severity of the yttrium shortage as “9 out of 10.” The United States imports 100% of its yttrium. Ninety-three percent comes directly from China. The remaining 7% is made from material that was first processed in China. The critical minerals supply chain had seen gallium restricted, graphite restricted, antimony restricted, terbium restricted, samarium restricted. Yttrium was the restriction that hit the semiconductor fabs and the jet engine factories simultaneously.

    What yttrium does

    Yttrium — element 39, a silvery metal more abundant in the Earth’s crust than silver but economically rare because it is difficult to separate and refine — occupies a peculiar position in the rare earth family. It is grouped with the heavy rare earths despite sitting slightly apart on the periodic table, because its chemistry behaves like the heavies. Its industrial applications span at least five distinct sectors, each of which would, on its own, justify classifying yttrium as strategic.

    The first is aerospace thermal barrier coatings. Yttria-stabilized zirconia — a ceramic compound of yttrium oxide and zirconium dioxide — is the standard thermal barrier coating applied to jet engine turbine blades and gas turbine components. The coating protects the underlying nickel superalloy (rhenium-containing, in many cases) from the 1,400-1,700°C combustion gases that would otherwise destroy it. Without the yttria-stabilized zirconia layer, no modern jet engine achieves its operating temperature. GE, Rolls-Royce, Pratt & Whitney, Mitsubishi Heavy, Siemens Energy — every turbine manufacturer in the world uses yttrium in thermal barrier coatings. The rhenium post documented the superalloy inside the turbine blade. The yttrium post documents the ceramic coating on the outside. If the rhenium makes the blade survive the heat, the yttrium makes the survival possible.

    The second is semiconductor manufacturing equipment. Yttrium oxide coatings line the interior of plasma etching chambers — the machines that carve circuit patterns into silicon wafers. The coating resists the corrosive fluorine and chlorine plasmas used in the etching process. Without yttrium oxide linings, the chamber walls degrade, contaminating wafers and reducing yield. Semiconductor fabs consume yttrium not in the chips themselves but in the equipment that makes the chips — a distinction that matters because equipment coating replacement is a continuous operational expense, not a one-time manufacturing input. Every etching cycle degrades the yttrium coating incrementally. Every fab needs a steady resupply. When that resupply stopped flowing from China, semiconductor manufacturers ranked the shortage at 9 out of 10 in severity.

    The third is laser technology. Yttrium aluminum garnet — YAG — is the crystal host in the Nd:YAG laser, one of the most widely deployed solid-state lasers in the world. YAG lasers are used in precision manufacturing, laser welding, medical surgery (ophthalmology, dermatology, oncology), military targeting and range-finding, and missile defense systems. The “Y” in YAG is yttrium.

    The fourth is high-temperature superconductors. YBCO — yttrium barium copper oxide — is the foundational material for second-generation high-temperature superconducting tape, the same REBCO technology that Commonwealth Fusion Systems is using to build the magnets for SPARC. The “Y” in YBCO is yttrium. The fusion energy timeline depends, in part, on yttrium supply.

    The fifth is phosphors and ceramics — LED lighting, display technologies, fiber optic signal amplifiers, and high-performance ceramics for aerospace structural components.

    Five sectors. One element. Ninety-nine percent of global production from one country.

    Why 99%

    Yttrium is recovered primarily from the same ion-adsorption clay deposits in southern China and Myanmar that produce terbium and dysprosium. It is never mined on its own — it’s a co-product of heavy rare earth separation, produced alongside the other heavies as yttrium oxide. China controls over 90% of yttrium mining and approximately 99% of yttrium separation and refining. The U.S. Geological Survey confirmed in January 2025 that the United States produces zero yttrium domestically. One hundred percent is imported. Ninety-three percent directly from China. The remaining 7% from material first processed in China and re-exported through intermediaries.

    The concentration is the most extreme in the entire Rare Earth Elements course — higher than antimony (48% mining, 74% refining), higher than gallium (98% refining), higher than terbium (98% refining). At 99% of separation capacity, there is functionally no market outside China. When Beijing issues an export license requirement, it doesn’t restrict the market — it becomes the market.

    The dual-price world

    The 4,400% European price spike created a dual-price system unlike anything in modern commodity markets. Yttrium oxide at $270 per kilogram in Europe. Yttrium oxide at $7 per kilogram in China. Same product, same purity specification, separated by an export licensing regime. Chinese consumers — aerospace manufacturers, semiconductor equipment producers, laser companies — continued to purchase yttrium at essentially pre-control prices. Western consumers paid 40 times more, if they could source material at all. The antimony and gallium/germanium export controls created dual-price systems with 2-6x differentials. Yttrium’s 40x differential is in a category of its own — a spread so large that it functions less like a trade restriction and more like an economic embargo with Chinese characteristics.

    The differential gives Chinese manufacturers a structural cost advantage in every industry that uses yttrium. A Chinese jet engine manufacturer pays $7 per kilogram for yttrium oxide coatings. A Western manufacturer pays $270. A Chinese semiconductor equipment maker pays $7 for chamber linings. A Western fab pays $270. The cost advantage compounds across every product that yttrium touches, and it compounds with the cost advantages China already holds from terbium and samarium price differentials in the magnet supply chain and nickel price advantages from Indonesian smelting.

    What comes next

    Lynas Rare Earths’ Malaysian separation facility is the only non-Chinese heavy rare earth separator operating at commercial scale, and it has begun producing separated yttrium oxide as of early 2026 — but at initial volumes that are a fraction of global demand. MP Materials’ Mountain Pass mine in California produces light rare earths with minimal yttrium content. New projects in Australia, South Africa, Brazil, and Scandinavia are in various stages of development, but as Benchmark Mineral Intelligence noted, the technology for heavy rare earth refining outside of China is not expected to be globally available until 2029, and costs remain 5-7 times higher than Chinese facilities. The structural gap — between what the West needs and what the West can produce — is a 3-year window at minimum, and the industries on the other side of that window (aerospace, semiconductors, energy, defense) cannot wait three years.

    The November 2025 Xi-Trump agreement suspended some of the expanded October 2025 controls for one year until November 2026. The April controls remain in force. The licensing infrastructure remains at Beijing’s discretion. The 99% concentration hasn’t changed. And qualification cycles for alternative yttrium oxide coatings in jet engines are measured in years, not months — introducing a new thermal barrier coating chemistry requires rig testing, engine endurance trials, materials characterization under simulated decades of service, and regulatory approval from aviation authorities, leasing companies, and airlines. Even if alternative coatings existed today, the certification pipeline to deploy them in commercial engines extends into 2027 or later.

    Why it’s in the course

    Yttrium is the Rare Earth Elements course’s most acute case study of what happens when 99% concentration meets export controls. The CHIPS Act was designed to strengthen the semiconductor supply chain. Yttrium coats the inside of the machines the CHIPS Act is trying to bring onshore. The rhenium post documented the superalloy inside the turbine blade. Yttrium is the coating that protects it. The fusion companies post documented CFS’s REBCO magnets. Yttrium is the “Y” in the YBCO superconducting tape those magnets are wound from. Every high-priority technology the West is investing in — advanced chips, jet engines, fusion energy, missile defense — runs through the same 99% chokepoint.

    This is the kind of supply chain our Rare Earth Elements course was built to map — where a 4,400% price spike in eleven months revealed that an element most people have never heard of coats the inside of every chip etching chamber, protects every jet engine turbine blade, forms the crystal in every YAG laser, and constitutes the “Y” in the superconducting tape the fusion industry is betting on — and 99% of its refining capacity is controlled by one country that has already demonstrated, across a half-dozen minerals, exactly what it does with that kind of leverage.

  • Terbium: The Bottleneck Inside the Bottleneck

    On April 4, 2025, China imposed export controls on seven heavy rare earth elements — samarium, gadolinium, terbium, dysprosium, lutetium, scandium, and yttrium — along with their compounds, metals, alloys, and any magnets containing them. On October 9, 2025, Beijing expanded the controls to include holmium, erbium, thulium, ytterbium, and — critically — “parts, components, and assemblies” containing any of these materials, including products manufactured outside China using Chinese-sourced inputs at concentrations as low as 0.1%. The controls were suspended on November 7, 2025, as part of the Xi-Trump trade agreement, for one year until November 2026. They are, as of this writing, frozen — not withdrawn. Before the suspension, European dysprosium oxide prices reached $900 per kilogram, roughly triple the Chinese domestic price of $255. Terbium oxide was trading at levels that caused suppliers to halt sales to private investors entirely, prioritizing industrial customers. The CEO of Germany’s Vacuumschmelze — one of the few rare earth magnet manufacturers outside China — told Reuters in November 2025: “If you talk about critical resources, it’s really the heavies, the heavies, the heavies — all the rest we will get.” He was talking about terbium and dysprosium. And he was right.

    What terbium does

    Terbium is a heavy rare earth element — atomic number 65 — and its industrial importance is almost entirely about magnets. Neodymium-iron-boron permanent magnets are the most powerful permanent magnets in existence, used in every EV traction motor, every direct-drive wind turbine generator, every hard disk drive, every guided missile, every MRI machine, and most industrial robots. The problem with NdFeB magnets is that they lose their magnetic properties at elevated temperatures — above roughly 80°C, an NdFeB magnet begins to demagnetize. An EV motor operating under sustained load, a wind turbine nacelle in summer heat, a fighter jet engine bay — all exceed that threshold. Adding small quantities of terbium or dysprosium to the alloy extends the operating temperature range to 200°C or higher. The addition is small — a few percent by weight — but the effect is the difference between a magnet that works in a laboratory and a magnet that works in a car.

    Terbium is the more effective of the two heavy rare earth additives — it provides stronger coercivity enhancement per unit of concentration than dysprosium — but it’s also rarer and more expensive. In practice, magnet manufacturers use both, often in combination, depending on the application’s thermal requirements and the relative cost and availability of each. For the highest-performance applications — military systems, aerospace actuators, precision guidance systems — terbium is preferred. For lower-temperature applications, dysprosium suffices.

    Beyond magnets, terbium has a secondary role in phosphors — it emits a vivid green light when excited, which made it essential for color television, fluorescent lighting, and trichromatic display systems. LED technology has largely displaced fluorescent phosphors, but terbium-based phosphors remain relevant in medical imaging, scientific instruments, and specialized displays. Terbium is also the primary component of Terfenol-D — an alloy of terbium, dysprosium, and iron that exhibits the strongest magnetostriction of any known material, meaning it physically expands and contracts in response to magnetic fields. Terfenol-D is used in naval sonar transducers, precision actuators, and vibration sensors. A submarine’s ability to detect other vessels depends, in part, on terbium.

    Where 98% comes from

    China controls over 90% of refined terbium supply. The highest-grade commercial deposits are ion-adsorption clays in southern China — Jiangxi, Guangdong, Fujian — where heavy rare earths are adsorbed onto clay particles and extracted by leaching with ammonium sulfate. A ton of clay yields a few hundred grams of mixed rare earth oxides, of which terbium might constitute a few grams. The extraction is low-tech, environmentally destructive (the leaching process contaminates groundwater and strips hillsides), and labor-intensive — but the deposits are uniquely rich in the heavy rare earths the magnet industry needs.

    Myanmar has become the second most important source of heavy rare earth ore — mined primarily in the Kachin and Wa states by ethnic militias operating in a civil war zone, shipped across the Chinese border, and processed in Chinese separation facilities. The ore flows through a corridor that China effectively controls on both ends: the armed groups who mine it depend on Chinese buyers, and the separation capacity that converts raw ore into usable oxide is 98-99% concentrated in China. Conflict minerals is a term usually applied to the DRC’s cobalt and coltan supply chains. The Myanmar heavy rare earth trade has the same structural characteristics — extraction in a conflict zone, processing controlled by an external power, and end-use in consumer products whose buyers rarely ask where the material came from.

    The West has deposits but not capacity. MP Materials’ Mountain Pass mine in California produces light rare earths — neodymium and praseodymium — but contains only traces of terbium and dysprosium. Lynas Rare Earths in Australia began heavy rare earth separation in Malaysia in 2025, becoming the first non-Chinese heavy rare earth separator on Earth — but at initial volumes of roughly 250 tonnes of dysprosium and 50 tonnes of terbium per year, it’s a fraction of global demand. Energy Fuels, a Denver-based uranium miner, is pivoting to rare earth separation using similar process chemistry — but is not yet producing at scale. Brazil is emerging as an ore exporter, but as Benchmark Mineral Intelligence noted, “the technology for HREE refining is expected to be available globally by 2029” and “costs outside of China remain 5-7 times higher.” The problem is not that heavy rare earth deposits don’t exist outside China. The problem is that the separation and refining capacity to convert those deposits into usable materials is, as of 2026, a Chinese monopoly with a few early-stage Western competitors years away from meaningful scale.

    The April 2025 export controls

    The April 2025 controls followed the same escalation pattern the Rare Earth Elements course has documented across gallium/germanium (July 2023), graphite (October 2023), antimony (August 2024), and tungsten (early 2025) — but with a crucial escalation. The earlier controls restricted raw materials and processed forms. The April 2025 controls restricted magnets containing terbium and dysprosium — finished products, not just feedstock. The October 2025 expansion went further: it applied extraterritorial jurisdiction to “parts, components, and assemblies” containing Chinese-sourced rare earth materials, even if manufactured outside China, even if traded domestically in a third country. A European carmaker using a motor containing a magnet with 0.1% Chinese-origin terbium would, under the October rules, need a Chinese export license for the motor — not for the terbium, for the motor.

    The IEA reported that after the April controls took effect, “many carmakers in the United States, Europe, and elsewhere struggled to obtain permanent magnets, with some forced to cut utilisation rates or even temporarily shut down factories.” European rare earth prices reached up to six times Chinese domestic prices. The November 2025 suspension froze the escalation but did not reverse it. The controls remain on the books. The licenses remain at Beijing’s discretion. The semiconductor supply chain has TSMC in Taiwan. The lithium supply chain has Chinese refining. The magnet rare earth supply chain has something worse: Chinese separation capacity so dominant that the export controls don’t just restrict supply — they assert jurisdiction over finished products manufactured anywhere in the world using Chinese-origin inputs. That’s not a trade restriction. That’s extraterritorial industrial policy.

    Why terbium is the real bottleneck

    McKinsey projects global demand for magnet rare earths will triple from 59,000 tonnes in 2022 to roughly 176,000 tonnes by 2035. Under rapid clean-energy adoption scenarios, terbium requirements could reach 134-256% of available supply — meaning the energy transition needs one-and-a-half to two-and-a-half times more terbium than the planet currently produces. The EU projects that demand for rare earth magnets could increase tenfold by 2050. The projected 60,000-tonne shortfall by 2035 — approximately 30% of total requirements — is concentrated in the heavy rare earths, not the lights. Neodymium and praseodymium can be sourced from Mountain Pass, from Lynas, from emerging projects in Brazil and Africa. Terbium and dysprosium cannot — not at the volumes the market needs, not at processing costs the market can absorb, and not from facilities that currently exist outside Chinese control.

    Every EV motor, every wind turbine, every humanoid robot actuator, every military guidance system that requires a high-temperature permanent magnet runs into the same constraint: the heavy rare earths that make the magnet work at temperature come from one country, are separated in one country, and are now subject to export controls that assert jurisdiction over products made in every other country. The nickel supply chain was restructured by Indonesian resource nationalism in five years. The terbium supply chain was never diversified enough to restructure — it started concentrated and stayed concentrated, and the concentration is now being weaponized.

    This is the kind of supply chain our Rare Earth Elements course was built to map — where the element that allows an EV motor magnet to survive operating temperature is separated from clay in southern China and a civil war zone in Myanmar, refined in facilities that are 98% Chinese-controlled, subject to export controls with extraterritorial reach, and projected to be in deficit by 2035 under every growth scenario the energy transition requires.

  • Antimony: The Metal in Your Bullets, Your Furniture, and China’s Crosshairs

    On August 14, 2024, China’s Ministry of Commerce announced export controls on six categories of antimony-related products — ore, metals, oxide, and gold-antimony smelting and separation technologies — effective September 15. The stated reason was national security. The actual mechanism was the same one China had used on gallium and germanium the year before: require exporters to apply for dual-use export licenses through the Commerce Ministry, approve the licenses selectively, and let the uncertainty do the work. By December 3, China had escalated to a full ban on antimony exports to U.S. military end users. By July 2025, the price of antimony had hit $59,750 per metric ton — roughly a 4x increase from the $15,000-$18,000 range where it had traded through early 2024. A 55-metric-ton shipment of Australian-mined antimony concentrate, routed through a Chinese port on its way to a U.S. smelter in Mexico, was detained at the port of Ningbo for three months, then returned with broken seals and no explanation. The critical minerals supply chain had absorbed another hit, and most of the industries affected — flame retardants, ammunition, semiconductors, batteries, night vision systems — didn’t have a substitute.

    What antimony actually does

    Antimony is a metalloid — a silvery-white element that sits between metals and nonmetals on the periodic table — and its defining industrial property is that it makes other things harder, more fire-resistant, and more durable. About half of all antimony consumed globally goes into flame retardants, primarily as antimony trioxide, which is mixed into plastics, textiles, cables, and coatings to prevent or slow combustion. Every upholstered piece of furniture that meets fire safety codes, every cable sheath in a data center, every circuit board housing in consumer electronics — antimony trioxide is in the compound that keeps it from catching fire. The other half splits across applications that are individually smaller but collectively indispensable: hardening lead in ammunition and lead-acid batteries, semiconductor compounds, infrared sensors, precision optics, nuclear reactor control rods, and ceramic glazes.

    The defense applications are what pushed antimony onto the U.S. Department of Interior’s critical minerals list and what makes the Chinese export controls a national security issue rather than just a commodity market disruption. Antimony hardens the lead in bullets — without it, projectiles deform on impact and lose penetrating capability. It’s a component in armor-piercing ammunition, night vision goggles, infrared missile seekers, and military battery systems. The U.S. consumed roughly 22,000 tons of antimony in 2023. China supplied 63% of U.S. imports. The next largest supplier was Belgium, at 8%. The U.S. has not had a domestic antimony mine in production since the early 2000s. The last significant domestic reserve — the Stibnite mine in central Idaho, now owned by Perpetua Resources — has received Department of Defense funding but isn’t expected to begin production until 2028 at the earliest, and even then its antimony grades average less than 0.5%, which is roughly 50 times lower than the 25% concentrate minimum that roasters need to produce metal and antimony trioxide efficiently. The CHIPS Act’s critical minerals provisions addressed some of these vulnerabilities at the legislative level. The operational reality is that legislation and mine output operate on fundamentally different timescales.

    The price chart tells the story

    Antimony’s price action in 2024-2025 is one of the most dramatic commodity charts of the decade. Through early 2024, the metal traded between $15,000 and $18,000 per metric ton — already elevated from historical levels due to supply tightness, but within a range that existing procurement budgets could absorb. Between the August announcement and September implementation of the export controls, prices doubled. By the end of 2024, they had tripled. By mid-2025, European antimony prices exceeded $60,000 per metric ton — a roughly 4x increase in under a year. This wasn’t speculative froth. The largest antimony roaster outside of China — an Omani facility that had been supplying much of the Western world’s antimony trioxide and ingots, processing roughly 20,000 metric tons of contained antimony annually — went bankrupt during the same period, unable to secure sufficient raw material at prices its contracts could support. The supply chain lost its single largest non-Chinese processing node at the exact moment it needed it most.

    The price spike created a two-tier market that mirrors what happened with gallium and germanium — domestic Chinese prices stabilized and even pulled back as export restrictions reduced outbound volume, while international prices soared. Chinese consumers of antimony — manufacturers of flame retardants, batteries, semiconductors, ammunition — gained a cost advantage over their Western competitors. Whether that cost advantage was an intended consequence of the export controls or a side effect is, at this point, a distinction without a meaningful difference. The structural pattern is the same one China has deployed across rare earths, gallium, germanium, graphite, and tungsten: control enough of the global supply chain that export licensing decisions function as de facto trade policy, without the formal trade-war optics of tariffs or quotas.

    Why there’s no quick fix

    The antimony supply chain has three structural characteristics that make diversification harder than the “just find another supplier” framing suggests.

    The first is geology. Antimony deposits are geographically concentrated. China produces 48% of global output. Russia and Tajikistan are the next largest producers — neither of which solves the geopolitical dependency problem for Western buyers. Bolivia, Turkey, and Myanmar produce smaller volumes. Australia has deposits but limited processing capacity. The global production base outside of China and its strategic allies is genuinely thin, and the thin parts are years away from meaningful expansion.

    The second is processing. China controls not just mining but an estimated 74% of global antimony trioxide refining capacity. Even if a Western mining company could produce antimony concentrate tomorrow, it would need a roaster to convert that concentrate into the oxide or metal that downstream manufacturers actually use. The Omani roaster’s bankruptcy removed the largest non-Chinese processing facility from the global supply chain. Building new roasting and refining capacity is a multi-year, capital-intensive process with environmental permitting requirements that vary by jurisdiction and add time in every one of them.

    The third is substitution — or the lack of it. For most of antimony’s critical applications, there is no drop-in substitute. Antimony trioxide’s combination of flame-retardant effectiveness, compatibility with a wide range of polymers, and cost has made it the industry standard for decades. Alternative flame retardants exist — aluminum trihydrate, magnesium hydroxide, ammonium polyphosphate — but they require reformulation of the polymer systems they’re added to, requalification testing, and in many cases higher loading levels that change the physical properties of the end product. For ammunition hardening, antimony has no practical substitute at scale. The Department of Defense has recognized this explicitly. The constraint isn’t that alternatives don’t exist in a laboratory. The constraint is that switching materials in industrial and military supply chains is a process measured in years, not months — and the export controls created an immediate shortage, not a multi-year one.

    The defense industrial base problem

    The antimony shortage intersects with a broader constraint that our Battlefields of the Future course covers in detail: the Western defense industrial base is not built for sustained high-intensity conflict. U.S. foreign military sales reached a record $238 billion in 2023, driven by demand from the wars in Ukraine and the Middle East. Ammunition consumption in Ukraine alone has exceeded production rates across NATO countries for most of the conflict. The loitering munitions and drone warfare revolution has changed the calculus of what modern armies need — but conventional ammunition remains the backbone of ground combat, and conventional ammunition requires antimony.

    The irony is structural: the country that supplies the ammunition-hardening material to Western militaries is the same country whose military modernization program — conducted through entities like the China Poly Group and the broader military-civil fusion strategy — those Western militaries are arming against. China controls the supply chain for a material that Western armies need to fight, and has the ability to restrict that supply chain at will. The export controls on antimony are, in that framing, not a trade dispute. They are a capability constraint imposed by a strategic competitor on its adversaries’ defense industrial base, using the commodity market as the delivery mechanism.

    What’s happening now

    By early 2026, the panic-driven shortage of 2025 has partially eased. Southeast Asian processing capacity has begun coming online. Chinese export license approvals have become more predictable, though still selective. Prices have retreated from the July 2025 peak but remain well above pre-2024 levels — the structural fragmentation Beijing created isn’t reversible through market forces alone. Companies that diversified sourcing in 2025 are paying premiums for supply security. Companies that didn’t are still exposed.

    Perpetua Resources’ Stibnite mine in Idaho remains the highest-profile domestic alternative, with DOD investment and a projected capacity that could supply up to 35% of U.S. antimony demand. Production isn’t expected until 2028. The timeline has slipped multiple times. Turkish mines are producing at 1-2% feed grades, struggling to concentrate their output to the 25% minimum that roasters require. The gap between what the Western world needs — reliable, non-Chinese antimony supply at industrial scale — and what the Western world has built is measured in years of mine development, roaster construction, and permitting that hasn’t started yet. The rare earth recycling infrastructure that would eventually allow antimony recovery from end-of-life batteries and flame retardant products is even further behind — the U.S. currently recovers about 18% of its antimony demand through lead-acid battery recycling, which is one of the few bright spots in an otherwise thin domestic supply picture.

    Why it matters beyond antimony

    Antimony is Lecture 32 of 36 in the Rare Earth Elements course, and by the time you get to it, the pattern is unmistakable. Gallium and germanium: export controls in 2023. Graphite: export controls in 2023. Rare earth processing technologies: export ban in December 2023. Antimony: export controls in August 2024, escalated to a military-end-user ban in December 2024. Tungsten and superabrasives: export controls in early 2025. Each announcement follows the same mechanism — license requirements, selective approvals, price spikes, two-tier markets, downstream industry disruption — and each one reveals the same underlying structural vulnerability: China’s dominance of critical mineral supply chains is not limited to mining. It extends through refining, processing, and manufacturing, at concentrations that give Beijing the ability to impose costs on adversaries through commodity markets rather than military force.

    The semiconductor supply chain has its own version of this vulnerability — concentrated in a different geography, dependent on a different set of materials, but structurally identical in the sense that a small number of facilities and a small number of countries control chokepoints that the global economy cannot easily route around. The antimony case is smaller in dollar terms than semiconductors or rare earth magnets. But the pattern it demonstrates — that a $15,000-per-ton metalloid can become a $60,000-per-ton national security crisis in eight months because one country controls both the mine output and the refining capacity — is the pattern that defines the critical minerals landscape of the 2020s.

    This is the kind of supply chain vulnerability our Rare Earth Elements course was built to map — where a metal most people have never heard of turns out to be the reason their furniture doesn’t catch fire, their bullets work, and their night vision functions, and the country that supplies 48% of it just decided that continued supply is conditional.

  • Graphite and the Battery Supply Chain: Why China Controls the Material Inside Every EV

    Every lithium-ion battery has two electrodes — a cathode and an anode. The cathode gets the headlines because it contains the expensive metals: lithium, nickel, cobalt, manganese. The anode is graphite. It is graphite in your phone, graphite in your laptop, graphite in every Tesla and every BYD and every grid-scale storage installation on earth. Graphite constitutes more of a lithium-ion battery by weight than lithium does. And China controls approximately 77 percent of natural graphite mining, more than 90 percent of graphite refining into battery-grade spherical graphite, and — as of October 2025 — has placed the entire category under export controls that give Beijing licensing authority over every kilogram that leaves the country. The material that makes the energy transition physically possible is more supply-concentrated than any other battery input, and the country that controls it has spent the last two years demonstrating exactly how willing it is to use that leverage.

    Why graphite and why now

    Natural graphite is mined. Synthetic graphite is manufactured from petroleum coke at extremely high temperatures. Both end up as anode material in lithium-ion batteries, where graphite’s layered crystal structure allows lithium ions to intercalate — slide between the layers during charging and slide back out during discharge. The process is the fundamental mechanism that makes rechargeable batteries work. Without graphite anodes, there are no lithium-ion batteries. Without lithium-ion batteries, there are no EVs, no grid storage, no portable electronics, no energy transition.

    The supply chain has three chokepoints, and China dominates all of them. First, mining: China produces roughly 77 percent of the world’s natural graphite, with Mozambique, Brazil, and Madagascar as distant secondary sources. Second, processing: mined graphite must be purified, shaped into spherical particles, and coated to function as battery-grade anode material. China controls over 90 percent of this processing — a concentration tighter than its grip on rare earth refining. Third, anode manufacturing: the finished anode components that go into battery cells are overwhelmingly produced in China or by Chinese companies operating abroad. Japan sources 90 percent of its graphite from China. South Korea sources 93 percent of its anode materials from Chinese suppliers. The United States is better diversified on raw graphite imports — 33 percent from China, 21 percent from Mexico, 17 percent from Canada — but on processed battery-grade material, the dependency is nearly as severe.

    The export control escalation

    China’s graphite weaponization has followed the same playbook it used with gallium and germanium: announce controls, let the market panic, then selectively enforce to maintain leverage without fully cutting supply. The timeline tells the story.

    In October 2023, China imposed export permit requirements on natural graphite — both flake graphite and spherical graphite — citing national security. The move was widely interpreted as retaliation for U.S. semiconductor export controls. Export volumes initially dropped but partially recovered as licenses were granted selectively, demonstrating that the controls were a valve, not a wall.

    In October 2025, Beijing escalated dramatically. New export controls effective November 8 expanded the scope to include synthetic (artificial) graphite anode materials, blended graphite anodes, cathode material precursors, high-performance lithium-ion batteries with energy density above 300 watt-hours per kilogram, and — critically — the manufacturing equipment and production technologies required to make all of these things. This wasn’t just restricting the finished product. It was restricting the ability to build the factories that produce the product. Graphitization furnaces, CVD rotary kilns, spray dryers, coating equipment — all now require export licenses. The IEA’s analysis was blunt: these controls “target some critical chokepoints in global battery supply chains” for which “supply options outside China are extremely limited.”

    Then, in November 2025, Beijing temporarily suspended the stricter end-user verification requirements for graphite shipments to the United States, valid through November 2026. The suspension aligned with bilateral trade consultations and followed the pattern China has established with rare earths: tighten, negotiate, offer temporary relief, preserve the structural leverage for future use. The November 2026 expiration date isn’t a formality. It’s a countdown.

    The IRA collision

    The U.S. Inflation Reduction Act created an additional problem that China’s export controls have now weaponized. To qualify for the full $7,500 EV consumer tax credit, manufacturers must demonstrate that critical minerals in their batteries meet “foreign entity of concern” (FEOC) rules — effectively limiting Chinese content in qualifying battery supply chains. The FEOC requirement for graphite was initially exempted until the end of 2026 because the supply chain was so concentrated that enforcing it immediately would have disqualified virtually every EV sold in America.

    Manufacturers scrambled for compliant sources. Several identified BTR — a Chinese graphite company planning to source from Indonesia or Morocco — as a workaround. In January 2025, the Department of Energy classified BTR as a foreign entity of concern and extended that designation to its overseas subsidiaries. The workaround collapsed. The result is a policy that simultaneously demands non-Chinese graphite (via FEOC rules) while operating in a market where non-Chinese processed graphite barely exists at commercial scale.

    What the U.S. is doing about it

    The CHIPS Act critical minerals pivot and the Defense Production Act investments are part of the response, but graphite-specific capacity is further behind than rare earths or lithium. The National Defense Stockpile issued requests for information on graphite in 2025, acknowledging that the U.S. has known deposits but essentially zero commercial production capacity for battery-grade material. Syrah Resources operates a graphite mine in Mozambique and a processing facility in Vidalia, Louisiana — one of the only non-Chinese anode material plants in the Western world — with Department of Energy loan support. Nouveau Monde Graphite in Quebec is developing an integrated mine-to-anode operation. Westwater Resources broke ground on a processing plant in Alabama. But these projects collectively represent a fraction of global demand, and each faces the same timeline problem that haunts every domestic critical minerals play: permitting, construction, commissioning, and ramp-up take years, and China’s export controls take effect immediately.

    The friend-shoring strategy fills part of the gap. Turkey holds 27 percent of global natural graphite reserves. Brazil holds 22 percent. India, Canada, and Mexico are all potential alternative sources for raw material. But the processing bottleneck — converting raw graphite into battery-grade spherical graphite — is the constraint that raw material diversification doesn’t solve. Building a graphite processing facility takes three to five years. China built its processing dominance over three decades.

    The honest picture

    Graphite is the most supply-concentrated critical battery material, more concentrated than lithium, more concentrated than cobalt, more concentrated than nickel. It is in every lithium-ion battery ever manufactured. China controls the mining, the processing, the equipment, the technology, and — since October 2025 — the legal right to restrict all of it. The temporary suspension of enhanced export controls to the United States expires in November 2026. What happens after that depends on the state of U.S.-China trade relations, which at this point is like forecasting the weather on a planet with no atmosphere — the models exist but the inputs are chaos.

    The copper shortage, the helium crisis, the semiconductor supply chain — each teaches the same structural lesson: the materials that modern technology depends on are sourced from fewer places, processed through fewer facilities, and controlled by fewer governments than most people realize. Graphite is the purest expression of that lesson because it’s in everything and nobody talks about it. We cover the full critical minerals landscape — from neodymium magnets to gallium export controls to graphite supply chain concentration — across our Rare Earth Elements course, where the question isn’t whether the supply chain has a single point of failure but how many single points of failure it has simultaneously.