What Is Cobalt Used For — September 17, 2026

Cobalt's Two Genuinely Distinct Modern Uses

Ask what cobalt is used for and you get an answer with two real, unrelated parts. The first, and the one driving most of today's headlines, is EV battery cathodes — specifically nickel-manganese-cobalt (NMC) chemistries, where cobalt helps stabilize the cell and supports higher energy density. The second, quieter but genuinely long-standing, is aerospace and industrial superalloys, where cobalt's ability to hold its strength at very high temperatures makes it valuable in jet-engine components.

These two uses don't move together. A slowdown in EV sales doesn't dent aerospace demand, and a slow year for aircraft manufacturing doesn't touch battery demand. Today's benchmark rate of ₹3.56 per gram reflects a blend of both pressures rather than one clean demand story the way a single-use metal's price would.

• EV battery cathodes: particularly nickel-manganese-cobalt (NMC) chemistries
• Aerospace superalloys: valued for heat resistance in jet-engine components
• Smaller uses: some industrial catalysts

Why Battery Chemistry Doesn't Always Need Cobalt

Here's the part that separates cobalt from a metal like lithium: cobalt is genuinely optional in some battery chemistries. NMC cells use it because it helps the cathode hold up structurally while packing in more energy per unit weight, which matters a lot for longer-range electric vehicles. Lithium-iron-phosphate (LFP) cells, by contrast, use little to no cobalt at all, trading some energy density for lower cost and, often, longer cycle life.

A real industry response, stated plainly

Some battery makers and automakers have publicly pursued lower-cobalt or cobalt-free chemistries like LFP, partly in response to cobalt's supply-concentration risk and partly in response to sourcing and labor concerns in parts of the DRC's artisanal mining sector — a genuine, widely-reported industry concern that battery makers and regulators have publicly addressed. This shift is real, and it's worth stating factually rather than dramatically: it does not mean cobalt demand is disappearing. NMC chemistries remain in wide use precisely where their energy-density advantage matters most, and LFP's growth in other segments is a genuine diversification of the battery market, not a wholesale replacement of cobalt-based cells.

That push-and-pull between chemistries — some manufacturers leaning into cobalt for performance, others leaning away from it for cost and supply-risk reasons — is a defining, ongoing feature of how EV battery demand for cobalt evolves from here.

The Aerospace Story Nobody Talks About Enough

Long before EV batteries existed, cobalt-based superalloys were already doing serious work in jet engines and other high-temperature industrial applications. That use hasn't gone anywhere — aircraft manufacturers still need materials that retain their strength under extreme heat, and cobalt superalloys remain a genuine, well-established solution for parts of that problem. This demand runs on aircraft-manufacturing and defense-spending cycles that have nothing to do with EV sales trends.

This is a meaningful structural difference from a metal like lithium, whose demand is now overwhelmingly tied to one fast-growing use. Cobalt's aerospace demand gives it a floor that doesn't rise and fall with the battery market — even in a scenario where lower-cobalt battery chemistries gain significant ground, aerospace superalloy demand would keep the metal commercially relevant.

Understanding both pillars — the newer, larger, more headline-grabbing battery story and the older, steadier aerospace story — gives a fuller picture of why cobalt's price on this page moves the way it does than looking at either one alone.