Manufacturing Chokepoints in Critical Mineral Supply Chains

Manufacturing chokepoints differ from raw material supply risks in a crucial way: they are created not by geology but by decades of deliberate industrial investment, learning-curve advantages, and economies of scale. China's dominance in battery cell production, permanent magnet manufacturing, and semiconductor precursor materials is not an accident of resource endowment - it is the outcome of strategic industrial policy pursued consistently since the late 1990s. The COVID-19 pandemic made these chokepoints visible to a broader audience, but supply chain analysts had documented them for years.

What makes these chokepoints particularly difficult to address is that they are self-reinforcing. The combination of skilled workforce, established supplier networks, process know-how, domestic demand, and competitive pricing makes it extremely difficult for new entrants to compete on cost alone. Policy intervention - through subsidies, procurement preferences, and trade measures - is the primary tool Western governments are using to accelerate diversification.

Battery Cell Manufacturing

The lithium-ion battery supply chain is among the most concentrated manufacturing ecosystems in the global economy. China accounts for approximately 77 percent of global battery cell production capacity, with CATL and BYD alone controlling over 50 percent of the global market. South Korea (LG Energy Solution, Samsung SDI, SK On) and Japan (Panasonic) account for most of the remainder. The EU and US together represent less than 10 percent of global cell production.

The chokepoint extends well beyond cell assembly into every intermediate component. China produces over 70 percent of battery cathode materials, over 90 percent of anode materials (dominated by synthetic and natural graphite), over 70 percent of electrolyte, and over 50 percent of separator film. Each component is a distinct chokepoint. A disruption to high-purity electrolyte solvent or separator film can halt cell manufacturing as effectively as a lithium or cobalt shortage - yet these materials receive far less policy attention.

Semiconductor Materials

Semiconductor manufacturing depends on critical minerals processed into ultra-high-purity materials: gallium arsenide (GaAs) and gallium nitride (GaN) wafers for power electronics and defense radar, germanium substrates for infrared optics and fiber optics, silicon carbide (SiC) crystals for electric vehicle inverters, and high-purity quartz crucibles for silicon wafer production. China produces approximately 98 percent of the world's primary gallium and 60 percent of refined germanium - figures that prompted Beijing's 2023 export licensing controls as a retaliatory measure in the broader technology trade conflict with the United States.

The chokepoint structure in semiconductors differs from batteries in one important respect: the final fabrication step - chip manufacturing - is not dominated by China. Taiwan Semiconductor Manufacturing Company (TSMC) fabricates the majority of the world's advanced chips, creating a distinct geopolitical risk. Japan's Shin-Etsu and SUMCO control approximately 60 percent of global silicon wafer supply. The result is a complex web of interdependencies where no single nation controls the entire chain, but every major player has leverage at a specific node.

The structural challenge is that subsidies and mandates can accelerate investment timelines but cannot shortcut the learning curve. Process know-how, skilled operators, qualified supplier networks, and product qualification records accumulate through years of production experience. Friend-shoring - redirecting supply chains toward allied nations - can redistribute geopolitical risk but does not in itself create the manufacturing capability needed to replace Chinese capacity in the near term. The most credible near-term strategy combines demand-side incentives (domestic content requirements, procurement preferences) with technology transfer arrangements and joint ventures that accelerate knowledge transfer to new manufacturing locations.