Samsung SDI has entered a partnership with the BMW Group and US solid-state battery specialist Solid Power to collaborate on a validation project for all-solid-state batteries (ASSB).
The project will see Samsung SDI supplying solid-state cells featuring a solid electrolyte developed by Solid Power, which are expected to offer improved energy density and safety. BMW will develop the corresponding modules and packs for integration into its next-generation evaluation vehicles.
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The collaboration marks a shift from early functional testing to larger-scale evaluation of cells produced by an established battery manufacturer, signaling a step closer to commercialization of solid-state batteries. The partnership brings together complementary expertise in battery materials, cell manufacturing, and automotive integration, creating a model for global value chains for ASSB technology.
BMW and Solid Power have been collaborating on solid-state batteries since 2016, with a formal technology transfer agreement signed three years ago. BMW’s relationship with Samsung SDI dates back to 2009, though Samsung SDI had previously pursued its solid-state battery work independently. The South Korean company plans to begin mass production of solid-state cells in 2027.
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Stella Joo-Young Go, Executive Vice President of the ASSB Commercialization Team at Samsung SDI, said: “Technological competitiveness in batteries would ultimately lead to innovations in electric vehicles. Samsung SDI will work closely with strategic partners such as BMW and Solid Power to take the lead in commercialization of ASSB.”
Martin Schuster, Vice President Battery Cell and Cell Module at BMW, added: “With Samsung SDI joining our partnership with Solid Power, we gain significant momentum on our path advancing the development of new battery cell technologies. This global collaboration is another proof point of our overarching goal: to be always in a position to offer our customers state of the art battery technology.”
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John Van Scoter, President and CEO of Solid Power, highlighted the company’s role in the partnership: “Our solid electrolyte technology is designed for stability and conductivity, and by working closely with global leaders in automotive and battery innovation, we strive to bring ASSB technology closer to widespread adoption.”