EV batteries use a surprisingly short list of metals, with lithium, nickel, cobalt, manganese, iron, and aluminum doing most of the work. The exact combination depends on the battery chemistry, and three types dominate the market today: NMC (nickel-manganese-cobalt), NCA (nickel-cobalt-aluminum), and LFP (lithium-iron-phosphate). Each uses a different mix of metals to balance energy density, safety, cost, and lifespan.
The Three Main Battery Chemistries
Every EV battery is a lithium-ion battery at its core, meaning lithium is always present. The differences come down to the cathode, the positive electrode where the chemistry really matters. The cathode determines how much energy a battery can store per kilogram, how long it lasts, and how much it costs to manufacture.
NMC batteries combine nickel, manganese, and cobalt. NCA batteries swap out manganese for aluminum. LFP batteries skip both nickel and cobalt entirely, relying on iron and phosphorus instead. Nickel-based chemistries (NMC and NCA) tend to appear in longer-range, higher-performance vehicles. LFP has gained momentum in smaller and more affordable EVs, where lower cost and better safety margins matter more than squeezing out every mile of range.
Nickel: The Energy Density Driver
Nickel is the heaviest single metal in most EV batteries by weight. Its role is straightforward: more nickel means more energy stored per kilogram, which translates to longer driving range. The industry has been steadily increasing the nickel content in cathodes over the past decade to push range higher without making battery packs larger or heavier.
The latest high-nickel formulation, called NMC 811, contains 80% nickel, 10% manganese, and 10% cobalt by metal content. That nickel accounts for roughly 48% of the cathode’s total weight. In a typical 60-80 kWh battery pack, that adds up to a significant amount of nickel metal. The tradeoff is that higher nickel content makes batteries slightly less thermally stable, which is why cobalt and manganese still play supporting roles.
Cobalt: Stability at a Cost
Cobalt keeps the cathode structure from degrading during charge and discharge cycles. It acts as a structural stabilizer, preventing the crystal lattice inside the cathode from collapsing as lithium ions move in and out. Research into ultra-high nickel cathodes has found that cobalt’s role in structural stabilization and charge compensation is difficult to fully replace, making complete cobalt substitution a persistent engineering challenge.
The problem with cobalt is supply. It’s expensive, geographically concentrated (mostly mined in the Democratic Republic of Congo), and raises ethical sourcing concerns. This is exactly why the industry has been pushing nickel content up and cobalt content down. In older NMC 111 formulations, cobalt made up a full third of the cathode metals. In NMC 811, it’s down to 10%. LFP batteries sidestep the issue entirely by using zero cobalt.
Lithium: Small in Quantity, Big in Importance
Lithium is the element that makes the whole system work. Lithium ions shuttle between the cathode and anode during charging and discharging, carrying the electrical charge that powers the motor. Despite being the defining ingredient, lithium is present in relatively small quantities. A typical EV battery contains between 3 and 5 kilograms of lithium metal.
That small amount is deceptive, though. Lithium has one of the lowest reduction potentials of any element, meaning it’s exceptionally good at storing and releasing electrical energy. It’s also lightweight with a small ionic size, which allows it to move smoothly between electrodes. The catch is that lithium makes up only about 20 parts per million of the Earth’s crust, and deposits are unevenly distributed, concentrated primarily in Australia, Chile, and China. This scarcity is a major factor driving both battery prices and the search for alternative chemistries.
Iron and Phosphorus in LFP Batteries
LFP batteries use lithium iron phosphate as their cathode material. The metal lineup is simpler: lithium and iron, bonded with phosphorus and oxygen. No nickel, no cobalt, no manganese. Iron is cheap, abundant, and nontoxic, which gives LFP batteries several practical advantages.
LFP cells have excellent thermal stability, meaning they’re far less likely to overheat or catch fire. They also last longer in terms of charge cycles, often outlasting the vehicle itself. The downside is energy density. LFP batteries store less energy per kilogram than nickel-based chemistries, so vehicles using LFP packs either have shorter range or need larger, heavier battery packs to compensate. Tesla, BYD, and several other manufacturers now offer LFP options in their standard-range models, saving nickel-based packs for their performance and long-range trims.
Manganese and Aluminum
Manganese serves as a stabilizer in NMC cathodes, working alongside cobalt to keep the crystal structure intact while nickel handles the heavy lifting on energy storage. It’s cheaper than cobalt and relatively abundant, which is why some next-generation formulations are exploring higher manganese content as another way to reduce cobalt dependence.
Aluminum plays a similar stabilizing role in NCA batteries, the chemistry Tesla has used extensively. It improves thermal stability and helps the cathode maintain its structure over thousands of charge cycles. Aluminum also shows up elsewhere in the battery pack as a structural material and as the current collector foil on the cathode side, but its role in the actual electrochemistry is specific to NCA cells.
Graphite: The Anode Side
While the cathode gets most of the attention, the anode (negative electrode) matters too. Nearly all EV batteries use graphite as their anode material, where it makes up about 96% of the anode’s weight. For an NMC 811 pack, that works out to roughly 0.8 kilograms of graphite per kWh of capacity, so a 75 kWh pack contains around 60 kg of graphite.
Graphite isn’t a metal, but it’s a critical mined material. Most battery-grade graphite is either mined (natural graphite, primarily from China and Mozambique) or manufactured synthetically from petroleum coke. Some manufacturers are beginning to add small amounts of silicon to anodes because silicon can theoretically store about ten times more lithium than graphite, but pure silicon anodes swell dramatically during charging. Current approaches blend in small percentages of silicon to boost capacity incrementally without destroying the anode’s structure.
Copper and Aluminum as Structural Metals
Beyond the electrochemistry, two metals play essential roles in the battery’s electrical infrastructure. Copper foil serves as the current collector on the anode side, carrying electrons out of the cell. Aluminum foil does the same job on the cathode side. These aren’t involved in the chemical reactions, but without them, the battery can’t deliver power. A typical EV battery pack contains meaningful quantities of both, along with steel or aluminum in the outer casing.
What Happens to These Metals After Use
EV batteries typically last 8 to 15 years before they degrade enough to need replacement, and the metals inside retain significant value. Modern recycling processes using hydrometallurgy (chemical leaching) or pyrometallurgy (smelting) can recover about 98% of the cobalt and nickel from spent battery packs. Lithium recovery has historically been lower, but newer processes are closing that gap.
This high recovery rate matters because it reduces the need for new mining and helps stabilize supply chains. As millions of first-generation EV batteries reach end of life over the next decade, recycled metals will become an increasingly important feedstock for new battery production.
Sodium-Ion: A Chemistry Without Lithium
Sodium-ion batteries are an emerging alternative that replaces lithium with sodium, the sixth most abundant element in the Earth’s crust. The cathodes use layered metal oxides containing combinations of manganese, iron, cobalt, and nickel, similar in structure to lithium-ion cathodes but with sodium shuttling between electrodes instead.
The appeal is cost. Sodium is cheap and available everywhere, eliminating the supply chain vulnerabilities that come with lithium. The challenge is performance: sodium ions are about 35% larger than lithium ions, which makes them slower to move and harder to fit into electrode structures without causing damage. Current sodium-ion cells deliver energy densities around 120 Wh per kilogram, well below what nickel-rich lithium-ion cells achieve. For now, sodium-ion technology is best suited for stationary energy storage and budget vehicles where range is less critical, but several Chinese manufacturers have already begun putting sodium-ion packs into production EVs.