The Critical Minerals Geopolitical Battle: From China's Dominance to US Seawater Technology
The global competition for critical minerals—essential components in energy, manufacturing, and technology sectors—has emerged as a major geopolitical flashpoint worldwide. Supply chains for materials crucial in clean energy production, including lithium, cobalt, magnesium, and nickel, are currently dominated by China, creating a dangerous concentration of global supply. However, the United States is seeking to level the playing field by developing advanced technology to extract critical minerals directly from seawater.
China's Dominance and Geopolitical Risks
Currently, China supplies approximately 85-95% of the world's refined rare earth minerals and controls 85-90% of global rare earth mining and processing operations. Chinese refineries produce 68% of the world's cobalt, 65% of nickel, and 60% of lithium for electric vehicle (EV) batteries. This extreme concentration creates a dangerous instability for global energy security.
If producers of these materials decide to restrict access to customers as political leverage, if prices skyrocket, or if multiple industries develop increased demand and deplete supplies, companies could go bankrupt, and efforts to limit climate change could be slowed.
Table 1: China's Market Share in Critical Minerals
| Critical Mineral | China's Market Share |
|---|---|
| Refined rare earth minerals | 85-95% |
| Rare earth mining and processing | 85-90% |
| Cobalt | 68% |
| Nickel | 65% |
| Lithium for EV batteries | 60% |
Geopolitical Advantages and Growing Demand
For Beijing, controlling global critical mineral supply provides significant economic and geopolitical advantages, especially as global demand for these materials continues to surge. The International Energy Agency (IEA) forecasts that global demand for critical minerals in the clean energy sector will at least double and possibly quadruple by 2040. This range depends on the world's adoption rate of clean energy, but the higher end is becoming increasingly plausible as global clean energy growth is accelerated by the closure of the Strait of Hormuz.
Growth in critical mineral demand will primarily come from EVs and battery storage, with lithium showing the fastest growth rate. "A world powered by renewable energy is a world hungry for critical minerals," stated United Nations Secretary-General António Guterres at the 2024 Forum on Energy Transition Minerals. For developing countries, critical minerals present a crucial opportunity to create jobs, diversify economies, and significantly boost revenues. But only if they are properly managed.
Table 2: Projected Growth in Critical Mineral Demand by 2040
| Primary Application Area | Expected Growth Rate | Fastest-Growing Mineral |
|---|---|---|
| Electric vehicles | Very high | Lithium |
| Battery storage | High | Lithium, Cobalt |
| Renewable energy | At least double, possibly quadruple | Nickel, Manganese |
US Innovation: Seawater Extraction Technology
The United States has lagged in securing critical mineral supply chains, but a team in California may have developed game-changing technology that could help the nation begin leveling the playing field. The new co-flow reactor, developed by the Pacific Northwest National Laboratory (PNNL), is designed to extract pure magnesium hydroxide from seawater for US industries. In the future, this technology could be adapted to extract other critical minerals, including nickel.
Seawater contains abundant critical minerals in varying concentrations. Just 0.1% of seawater contains enough critical minerals like magnesium and lithium to meet human demand for at least 50,000 years if we could extract it completely," said Jessica Cross, a chemical oceanographer at PNNL, in a recent press release.
The Co-Flow Reactor's Operation
The new co-flow reactor developed at PNNL circulates seawater and sodium hydroxide together, creating magnesium hydroxide where they meet. Magnesium hydroxide is widely used across the United States and is currently imported in large quantities. The team behind the new model suggests it could be integrated with desalination plants with breakthrough results. PNNL analysis shows that installing the technology at California's Carlsbad desalination facility could produce up to 1.16 million pounds (524,000 kg) of magnesium hydroxide daily. That's more than three times the daily US consumption at a single facility. Moreover, the technology has significant scaling potential, potentially opening future export opportunities.
The biggest advantage of seawater is that, on average, it has fairly standard chemical composition worldwide," explained Dr. Chinmayee Subban, a chemist at PNNL. "That means we can develop technology for one location and quickly scale up to deploy in many different places."
Impact and Future Outlook
This development could shift the global geopolitical dynamics of critical minerals. By reducing dependence on China, the United States and its allies could build more sustainable supply chains and improved energy security. Seawater technology could not only provide domestic supply but also create export opportunities, especially as global demand continues to rise.
However, challenges remain in scaling this technology to industrial levels and ensuring economic viability. Energy costs for the extraction process and related environmental concerns need to be addressed. Nevertheless, the potential of this technology to diversify critical mineral supplies is undeniable.
A clean energy transition world requires innovative solutions to supply challenges. Extracting minerals from seawater could be an important part of the answer, providing an almost limitless and globally distributed supply source. As geopolitical competition over strategic resources continues to escalate, technological advances like PNNL's co-flow reactor could reshape the future of global energy security.