QuantumScape, the U.S.-based solid-state battery developer backed by Volkswagen, has signed a strategic agreement with Japan’s Murata Manufacturing to explore joint production of ceramic separators, a key component in QuantumScape’s lithium-metal battery cells.
The collaboration brings together QuantumScape’s proprietary separator technology and Murata’s manufacturing expertise in high-precision ceramics. Murata, a leading producer of passive electronic components and ceramic-based solutions, is the latest addition to QuantumScape’s network of strategic partners, which includes materials suppliers, automotive OEMs, and contract manufacturers.
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“Murata’s deep expertise in high-precision ceramics manufacturing makes them an exceptional partner as we look to scale production of our proprietary ceramic separator,” said QuantumScape CEO Siva Sivaram in a statement. “By combining our groundbreaking Cobra separator production process with Murata’s proven capabilities and global manufacturing strength, this agreement has the potential to create significant value.”
QuantumScape, headquartered in San José, California, is developing solid-state lithium-metal batteries for electric vehicles, with its technology centered around a solid ceramic separator. This design enables the use of lithium-metal anodes, which are expected to deliver improved energy density, faster charging times, and greater safety than conventional lithium-ion cells.
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Volkswagen, QuantumScape’s largest shareholder, has supported the company since 2012. In July 2024, QuantumScape signed a licensing agreement with PowerCo, Volkswagen’s battery subsidiary, granting it the rights to produce cells based on QuantumScape’s solid-state design. The agreement includes an initial capacity of 40 GWh per year, with potential expansion to 80 GWh.