[Japanese media: Sumitomo Chemical to mass-produce EV solid-state battery materials]

Published: Jul 21, 2026 13:38

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According to Nikkei, Sumitomo Chemical plans to start mass production of a new-type solid-state battery electrolyte material for EVs as early as fiscal year 2028, a move expected to reduce costs without sacrificing performance. The new electrolyte adopts a halide system, with chlorine and other elements as the main components, and is expected to be an alternative to sulphide and oxide electrolyte materials. The material was jointly developed by Sumitomo Chemical, Kyoto University, and Tottori University.

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