Where does graphite come from?

In 2025 China mined 1.4 million tonnes of natural graphite, 78% of the world's 1.8 million tonnes (USGS MCS). Madagascar followed with 4.4%, then Tanzania (4.2%), Brazil (3.6%) and Mozambique (3.3%). The top five account for 93%. Reserves are held more widely: China holds 32% of the world's 310 million tonnes (USGS MCS).

Graphite comes in three commercial forms and they are not interchangeable. Flake graphite, crystalline plates disseminated through metamorphic rock, is the type batteries need. Amorphous graphite, microcrystalline material from metamorphosed coal, goes into refractories, foundry facings and pencils. Vein or lump graphite, found in commercial quantity essentially only in Sri Lanka, is the purest natural form and serves specialty markets.

As with rare earths, the mining table understates concentration downstream. Turning flake graphite into battery anode material requires shaping it into spheres, purifying it to over 99.95 percent carbon and coating it, and that capacity is overwhelmingly Chinese. Synthetic graphite, made by baking petroleum coke at very high temperature, competes directly for the same anode market and is also made mostly in China, so it does not diversify supply.

World output changed +16% on the previous year, with new African mines adding volume while Chinese output has been constrained periodically by environmental enforcement.

China was the largest exporter of natural graphite (HS 2504) in 2024 with 42% of world export value, ahead of Madagascar (10%), on world trade of $538.7 million (CEPII BACI). United States was the largest importer with 18%.

Two things distort that picture. First, the natural graphite heading does not capture synthetic graphite, which supplies a large share of the anode market under a separate code, so the traded volumes here understate the anode material trade considerably. Second, much of the value added happens after the concentrate crosses a border: African and Brazilian flake is shipped to Chinese processors, spheronized and coated, and leaves again as anode material worth several times the concentrate price.

This page quotes no graphite price, because no free, citable series exists. Flake graphite is assessed privately by grade, with price varying strongly by flake size and carbon content, and spherical and coated anode material is assessed separately again. Synthetic graphite prices track petroleum needle coke and electricity costs and are assessed by the same private agencies. Publishing a number here would require a license this site does not hold.

How the market actually works is simple enough to describe. Flake concentrate is sold by mesh size and carbon percentage, with large flake commanding a substantial premium over fine because it is worth more in refractories and expandable applications. Anode material is sold on multi-year qualified contracts to cell makers, because a battery producer must test and approve a specific anode from a specific plant before using it, which makes switching suppliers slow and gives incumbents pricing power.

The competitive reference that matters most is the synthetic graphite price. Because synthetic and natural anode material substitute for one another, and synthetic is made from petroleum coke with very large electricity input, the natural graphite price is effectively capped by the cost of baking coke in a Chinese furnace. When electricity or needle coke gets expensive, natural graphite gains share, and the reverse.

Every lithium-ion cell has a graphite anode, and an anode uses roughly ten times as much graphite by weight as the cathode uses lithium. Electric vehicle and storage growth therefore drives graphite demand hard, and unlike cathode chemistry there is no commercial way yet to remove graphite from a cell entirely.

Synthetic anode material made from petroleum needle coke performs better in fast charging and lasts longer, but costs more and uses enormous amounts of electricity. The split between natural and synthetic anodes shifts with the price of needle coke and power, and that split determines how much natural flake the market needs.

Spheronisation, purification and coating are concentrated in China, and export licensing on graphite items has been used to restrict flows. Because a qualified anode cannot be swapped quickly, licensing decisions transmit to cell makers within a quarter.

A deposit's value depends on how much large flake it yields, since large flake sells at a premium to fine. Two mines with the same tonnage and grade can have very different economics, and this is why grade alone is a poor guide to a graphite project's viability.

Battery anode graphite must reach very high purity, and the cheapest route uses hydrofluoric acid, which carries serious environmental and permitting burdens. Thermal purification avoids the acid but uses much more energy. Which route a jurisdiction will permit largely determines whether processing can be built there.

Large flake deposits in Mozambique, Madagascar and Tanzania have added mine capacity outside China for the first time at scale. Whether that translates into supply diversification depends entirely on whether anode processing follows, and so far most of it has not.

The traditional market, refractory bricks and crucibles for steelmaking, magnesia-carbon linings and foundry facings, still absorbs a large volume of amorphous and fine flake graphite. Steel output therefore sets the floor under demand for the grades batteries do not use.

Flake graphite is mined in open pits from weathered metamorphic rock, then crushed gently, because crushing destroys the large flakes that carry the premium, and floated. Graphite is naturally hydrophobic, so flotation works well, and a concentrate of ninety to ninety-five percent carbon is achieved with multiple gentle regrind and cleaning stages. The concentrate is screened into mesh fractions and sold by flake size.

Turning that into anode material takes three more steps. Spheronisation rounds the angular flakes into potato-shaped particles in a high-speed mill, which improves packing density in the electrode but wastes a large fraction of the input as fines, so yield is low. Purification removes silicates and metals to above 99.95 percent carbon, either by hydrofluoric acid leaching or by heating to around three thousand degrees. Coating with a thin carbon layer improves cycle life and stops the electrolyte reacting with the graphite surface.

Synthetic graphite skips the mine entirely: petroleum needle coke is mixed with pitch, formed, baked and then graphitised at close to three thousand degrees in electric furnaces over several weeks. The energy consumption is very large, which is why synthetic graphite economics follow electricity prices.

Amorphous graphite requires far less processing and is used more or less as mined after grinding, which is why it sells for a fraction of the price of battery-grade material.

Battery anodes are the growth market and now the largest by value. Both natural and synthetic graphite serve it, often blended, and the quantity per vehicle is large: an electric car anode contains tens of kilograms of graphite.

Refractories remain the largest traditional use. Magnesia-carbon bricks line steel converters and ladles, graphite crucibles hold molten metal, and foundry facings give castings a clean surface. Steelmaking is therefore graphite's oldest and steadiest customer. Graphite electrodes for electric arc furnaces are a separate and important market, but they are made from synthetic graphite rather than natural flake.

Other uses spread across lubricants where oil would burn or contaminate, brake linings and friction materials, gaskets and seals made from expanded graphite foil, carbon brushes in motors, pencils, and the moderator and reflector blocks in some nuclear reactor designs. Expandable graphite, made by treating large flake with acid, puffs up when heated and is used as a flame retardant in construction foams.

The chain is mine, concentrate, spheronize, purify, coat, cell, and the middle three steps are the constraint. They are concentrated in China, they are chemically demanding, and the qualification process at the far end means a cell maker cannot change anode supplier quickly even when an alternative exists. That combination is why graphite appears on every critical minerals list despite being one of the most abundant materials on earth.

Purification is the specific chokepoint for anyone trying to build capacity elsewhere. The acid route is cheap and permits poorly outside a few jurisdictions; the thermal route permits more easily and costs more. Several announced Western anode plants have been delayed on exactly this question.

Physically, moving graphite is easy: concentrate ships in bulk bags and containers, and there is no phytosanitary or hazard classification issue at concentrate stage. The logistics constraints are ordinary port and container matters in Mozambique, Madagascar and Tanzania rather than anything specific to the mineral.

The structural risk is that mine diversification without processing diversification achieves nothing. A great deal of new African flake capacity now exists, and most of it still travels to China to be made useful. Until spheronization, purification and coating capacity is built and qualified at scale outside China, the supply picture for battery anodes will look much as it does today.