Cobalt Supply Chain

Cobalt is a critical mineral used primarily in lithium-ion battery cathodes for electric vehicles, consumer electronics, and aerospace superalloys. Its supply chain is among the most geographically concentrated of any industrial input, making it a recurring subject in trade policy, human rights, and energy transition debates.

The Democratic Republic of the Congo (DRC) accounts for roughly 70% of global mined cobalt output, much of it as a by-product of copper mining in the Katanga/Lualaba copperbelt. A significant share—commonly estimated at 15–30%—comes from artisanal and small-scale mining (ASM), which has been linked to child labor, unsafe working conditions, and informal trading networks. Amnesty International's 2016 report "This Is What We Die For" drew sustained attention to these conditions and prompted downstream auditing commitments from Apple, Samsung, Tesla, and others.

Midstream processing is dominated by China, which refines an estimated 70–80% of the world's cobalt. Chinese firms—most prominently CMOC (which operates the Tenke Fungurume and Kisanfu mines) and Huayou Cobalt—also hold major upstream stakes in the DRC, a position consolidated after Freeport-McMoRan's 2016 sale of Tenke Fungurume.

Policy responses include:

• The OECD Due Diligence Guidance for Responsible Mineral Supply Chains (2011, revised), the dominant voluntary framework.
• The US Inflation Reduction Act (2022), whose EV tax credit conditions critical-mineral sourcing on free-trade-agreement partners or recyclers.
• The EU Critical Raw Materials Act (2024), which sets benchmarks for domestic extraction, processing, and recycling, and caps reliance on any single third country.
• Industry traceability initiatives such as the Responsible Minerals Initiative and blockchain pilots like Re|Source.

Secondary producers include Indonesia (rising rapidly via nickel-cobalt HPAL projects), Australia, the Philippines, Cuba, and Canada. Battery chemistry shifts toward lithium iron phosphate (LFP) and high-nickel/low-cobalt cathodes have moderated, but not eliminated, demand growth.