Cobalt and the global EV transition
Global cobalt production is heavily concentrated: about 70% comes from the Democratic Republic of Congo (DRC), with smaller shares from Russia, Australia, and Canada. In the DRC, 15–20% of output is from artisanal mines, employing around 255,000 workers, including an estimated 35,000 children. Cobalt is essential for lithium-ion batteries, and demand is projected to quadruple by 2030 as electric vehicle production grows. Prices are volatile, having ranged from US$20,000 to US$80,000 per tonne in the past five years. International companies face pressure to ensure ethical supply chains, and some are investing in recycling and new mines in Australia and Canada. The global pattern is one of uneven development: the DRC supplies the raw material, while processing and manufacturing are concentrated in China.
1. Analyse the global spatial patterns and flows of cobalt production and consumption. Explain how these patterns create uneven impacts at different scales.
Read the worked answer
Production is concentrated in the DRC (70%), a peripheral economy, while consumption is concentrated in China (processing) and in core economies (EV manufacturing). This is a classic core–periphery pattern: raw material flows from the DRC to China, where it is refined, then to car manufacturers in Europe, the US, and Asia. The flows are governed by global commodity chains, with prices set by international markets. The uneven impacts are clear: in the DRC, artisanal mining provides livelihoods for 255,000 workers but exposes them to hazardous conditions and low pay, with 35,000 children involved. Environmental impacts include deforestation and water pollution at mine sites. At the global scale, consumers benefit from cheaper batteries, but the social and environmental costs are externalised to the DRC. At the local scale, mining communities bear the health and safety burdens. The pattern is reinforced by the lack of processing capacity in the DRC, so value is added elsewhere, limiting economic development. This is a spatial inequality produced by the global division of labour, not by natural scarcity.
2. Evaluate two responses to the social and environmental issues in the cobalt supply chain. Which response is more effective, and why?
Read the worked answer
Response one: certification and due diligence by companies, such as audits of supply chains. This can improve traceability and pressure artisanal mines to meet standards. However, it is difficult to enforce in informal artisanal settings, and audits can be costly, potentially excluding the poorest miners. Response two: recycling and substitution. Recycling increases secondary supply and reduces demand for primary cobalt, which lessens pressure on DRC mines. Substitution (e.g., cobalt-free batteries) could also reduce demand. These responses address the problem at the consumption end and are more scalable. However, recycling is currently limited by collection rates and technology, and substitution may take years. Which is more effective? In the short term, certification can improve conditions for some workers but risks greenwashing. In the long term, recycling and substitution are more effective because they reduce the scale of the problem at its source-demand. My judgement is that a combination is needed, but recycling and substitution have the greater potential because they change the structural demand driver, whereas certification alone does not challenge the unequal core–periphery relationship.