Chapter 07 · Materials & footprintsCircular Economy & Materials
Cathode active material (CAM)
Definition
The electrochemically active compounds coated onto a battery's cathode, determining its energy density, power, lifespan and cost. Principal families include lithium cobalt oxide (LCO), lithium iron phosphate (LFP), lithium manganese oxide (LMO) and nickel manganese cobalt oxides (NMC, in varying ratios); nickel-rich NMC and NCA dominate long-range EVs while cobalt-free LFP gains share.
References
Supports definition and framing.
Supports definition and framing.
Overview
What it means
CAM is the single most expensive battery component — roughly 35–45% of cell cost — and the locus of the battery supply chain's sustainability problems: cobalt mining in the DRC (artisanal-mining child-labour exposure), nickel's deforestation and tailings footprint in Indonesia, and concentrated refining capacity. The LFP shift reduces nickel/cobalt exposure but trades energy density and remains China-centric.
CAM composition drives EU Battery Regulation requirements — recycled-content mandates (from 2031), carbon-footprint declarations and due-diligence obligations all key off cathode chemistry — and battery-passport data.
How it is used
Cell makers lock CAM offtakes years ahead; recyclers target CAM metals recovery (hydrometallurgy, direct recycling); ESG due diligence traces cobalt/nickel provenance; procurement tracks CAM price indices as battery-cost drivers.
Why it matters
Decarbonisation's mineral footprint is largely a cathode story — CAM choices determine whether electrification trades fossil dependence for new extraction harms.