In October 2025, Samsung SDI joined BMW Group and Solid Power, Inc. in a three-way collaboration to advance all-solid-state battery (ASSB) technology for automotive use. The partnership combines BMW’s automotive expertise, Solid Power’s solid-electrolyte technology, and Samsung SDI’s battery manufacturing capabilities to accelerate development and validation of next-generation ASSB cells.

Under the agreement, Solid Power will supply a sulfide-based solid electrolyte to Samsung SDI, which will incorporate it into battery cells for testing. These cells will be evaluated against performance and safety requirements set by BMW, with the goal of integrating them into future BMW evaluation vehicles.

All-solid-state batteries promise higher energy density and improved safety by replacing liquid electrolytes with solid materials, potentially enabling longer driving ranges without adding significant weight. BMW has been investing in solid-state technology since 2016 and has operated a prototype line in Parsdorf with Solid Power’s support.

Solid Power focuses on selling electrolytes and licensing cell designs, positioning itself as a key supplier for EV battery innovation. Samsung SDI, headquartered in South Korea, produces batteries for electric vehicles, energy storage, and IT devices, while committing to 100% renewable electricity across global operations by 2050.

This collaboration represents a major step toward bringing safer, more efficient, next-generation battery technology to the automotive market.