Anode Active Materials

Finding

Anode supply is gated by purification, graphitization and coating capacity, not by graphite mining, and that capacity sits in China

Anode active material (AAM) is the coated graphite powder on the copper-foil side of a lithium-ion cell. It sets first-cycle efficiency, fast-charge acceptance and cycle life. China produces more than 90% of it through BTR, Shanghai Putailai, Shanshan, Shangtai and Kaijin, and about 94% of battery-grade graphite overall.

Two routes feed it. Natural graphite flake from mines in China, Mozambique (Syrah's Balama), Madagascar, Tanzania and Brazil is milled into spheres - a step that rejects more than half the feed - then purified with hydrofluoric acid or high-temperature thermal treatment to purified spherical graphite (PSG). Synthetic graphite is made from needle coke or pitch coke graphitized near 3,000 degrees Celsius, an electricity-intensive step China concentrated in Inner Mongolia, Sichuan and Yunnan for cheap power. Both are carbon-coated and qualified per cell design. Synthetic graphite now supplies most EV anodes because it cycles and fast-charges more consistently.

Silicon extends graphite rather than replacing it. Silicon oxide or silicon-carbon composite at a few percent by weight raises capacity; higher loadings swell during charging and shorten life. Sila started its Moses Lake, Washington plant in 2025; Group14 now makes commercial volumes in Korea while its Moses Lake plant moves slowly; Amprius, Nexeon and Chinese producers BTR and Shanshan are scaling too. Policy is pushing supply out of China: Beijing has licensed graphite exports since December 2023 and widened controls to synthetic anode material, and the US Commerce Department opened antidumping and countervailing duty cases on Chinese active anode material in 2025. Outside China, progress is slow: Syrah's Vidalia, Louisiana plant is built but still qualifying with Tesla, Novonix expects mass production in Chattanooga in the second half of 2027, Westwater's Kellyton, Alabama plant is waiting on financing, and Talga (Lulea, Sweden) is an EU strategic project. BTR's 80,000-ton plant in Kendal, Indonesia shows where Chinese capacity is going instead.

The plant tables below list 58 anode material sites, 13 of them in China, from the ElectronsX anode dataset.

Anode types

Anode materials compared

Graphite carries the anode market; the alternatives fill niches.

Battery grade

What battery-grade AAM requires

Specs are multi-parameter; purity alone does not qualify a powder.

Graphite plants

Graphite anode plants

Natural and synthetic graphite anode plants, plus the needle coke that feeds synthetic graphite. Status order: operational, ramping, under construction, announced, paused, cancelled, closed.

Silicon and other

Silicon, hard carbon, LTO and lithium metal plants

Silicon-carbon composites that extend graphite, hard carbon for sodium-ion cells, LTO and lithium metal; mostly pilot and early commercial lines.

Related

Related coverage

• Battery Supply Chain
• Graphite Refining
• Cathode Active Materials
• Electrolytes and Separators
• Battery Cell Manufacturing
• Critical Minerals