Korean Battery Makers Deepen Reliance on Chinese Electrolyte; 2025 Imports Jump Over 50%

The dependence of South Korean battery manufacturers on Chinese electrolyte has noticeably deepened. This trend is rooted in a classic supply and demand story. On the demand side, the global appetite for batteries is surging, not just for electric vehicles (EVs) but also for Energy Storage Systems (ESS). The massive expansion of grid-scale storage, with the US alone adding a record 15 GW in 2025, created a significant need for core battery materials like electrolyte. On the supply side, Chinese electrolyte producers expanded their capacity far beyond current demand. With factory utilization rates as low as 25-35% in 2024, a state of oversupply emerged. This situation drove prices down, making Chinese electrolyte the most cost-competitive and readily available option on the market. For Korean battery makers, the pull of low prices and supply security was too strong to ignore for their domestic operations. So, why is this happening when the world is focused on de-risking from China? This is where geopolitics creates a dual-track strategy. First, regulations like the US Inflation Reduction Act (IRA) and its 'Foreign Entity of Concern' (FEOC) rules effectively bar components with Chinese materials from receiving EV tax credits. Second, the European Union is implementing its own traceability requirements under the EU Batteries Regulation. In response, Korean giants are localizing production for Western markets, building new plants in North America and Europe that use FEOC-compliant materials. However, this process is slow and expensive. To fill the gap and serve other markets, their production lines back in Korea are sourcing the most economical materials available—which are overwhelmingly from China. This explains why imports jumped, even as new non-Chinese supply chains are being built. - Electrolyte: A chemical medium in a battery that allows ions to flow between the anode and cathode, enabling the battery to charge and discharge. - FEOC (Foreign Entity of Concern): A US government designation for companies controlled by or subject to the jurisdiction of countries like China. Under the IRA, EV batteries with components from FEOCs are ineligible for certain tax credits. - ESS (Energy Storage System): A system, often using large batteries, that stores energy for later use. It's crucial for stabilizing power grids that rely on intermittent renewable sources.