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Sodium Batteries: West Trails China
21 Sep
Summary
- China leads in developing sodium-ion batteries, rivaling lithium-ion technology.
- Western nations lag behind China in sodium battery investment and production.
- Sodium-ion batteries offer potential cost, safety, and temperature advantages.
China has significantly advanced in developing sodium-ion battery technology, outpacing Western nations. This new battery type utilizes sodium salts dissolved in water, offering performance comparable to lithium-ion batteries and potentially reducing reliance on critical metals China currently dominates.
Chinese manufacturers, including CATL and BYD, are leading global production of sodium-ion battery cells. The carmaker Changan is set to launch the first mass-produced electric vehicle using these batteries this month. Investment in this sector has been robust in China, supported by government incentives, unlike in Europe and the US where several startups have ceased operations.
Despite challenges, Western companies like GM, Tiamat Energy, and Moll Batterien are investing in sodium-ion technology. These batteries are noted for their improved safety, better performance in extreme temperatures, and potential for lower costs. The global capacity for sodium-ion gigafactories is heavily concentrated in China, exceeding 400 GWh compared to just 11 GWh elsewhere.
Major economies are considering the strategic implications of relying on potential adversaries for battery supply. Sodium-ion batteries are seen as complementary to lithium-ion, particularly for energy storage and specific vehicle applications. Companies like Alsym Energy are expanding production, with some cells being manufactured in the US and UK, aiming for future North American material sourcing.
