Chinese battery maker Sunwoda Electronic Co., Ltd. and new-energy materials producer Zhongwei New Materials Co., Ltd. have entered a strategic cooperation framework aimed at advancing large-capacity solid-state electric vehicle (EV) batteries. Signed on December 25, 2025, the agreement focuses on joint development of cathode precursor materials, cathode materials and full-solid-state battery technologies to accelerate the industrialization of next-generation energy storage solutions. Financial details were not disclosed.
Sunwoda, which serves the consumer electronics, power storage and intelligent hardware markets, also supplies lithium-ion cells and modules to several domestic automakers. Its subsidiary, Sunwoda Power Technology Co., Ltd., will combine resources with Zhongwei to strengthen capabilities in solid-state battery research and pilot production. Zhongwei, known for its nickel- and cobalt-based battery materials, has a research track record in solid electrolytes, cathode precursors and related components. Its products are already used by leading Chinese automakers.
Sunwoda’s current solid-state portfolio includes a first-generation polymer-based all-solid-state battery with an energy density of about 400 Wh/kg and a 20 Ah cell that completed 1,200 cycles under low external pressure. The company has planned a 0.2 GWh pilot production line by the end of 2025 to facilitate scale-up to 60 Ah cells. Through this collaboration, Sunwoda and Zhongwei aim to integrate their technical, engineering and manufacturing strengths to speed commercialization.
The partnership comes as several Chinese battery manufacturers, including industry leaders and emerging companies, prepare or operate pilot lines for solid-state battery production. Notably, one automaker has already produced 60 Ah automotive-grade cells using sulfide solid electrolytes. Market analysts forecast that global solid-state battery shipments could reach 614 GWh by 2030, with nearly 30% comprised of all-solid-state variants.
Both companies must finalize formal project contracts before implementation, reflecting a broader industry push to transition solid-state batteries from laboratory research to commercial production.
Source: CarNewsChina
