Setting the Direction at Home — Then Worldwide: China to Approve Solid-State Battery Standard

China plans to publish its first national standard for solid-state batteries in July 2026, marking a major step toward large-scale production expected to begin in 2027. The draft document, titled “Solid-State Batteries for Electric Vehicles. Part 1: Terms and Classification,” was completed in December 2025, with public consultation running through February 28, 2026. In February, the China Automotive Technology and Research Center (CATARC) will conduct validation testing to refine evaluation methods and performance criteria. Final approval of the standard is expected in April.

The document will establish core definitions, including distinctions between liquid, semi-solid, and fully solid-state batteries. Additional standards covering solid electrolytes and other key components are expected to follow.

Chinese automakers and battery manufacturers are aggressively investing in this technology. Solid-state batteries promise energy densities above 300 watt-hours per kilogram (Wh/kg) and significantly improved fire resistance.

Dongfeng is currently testing a 350 Wh/kg battery in its eπ 007 model. The company claims a driving range of more than 620 miles on a single charge, with 72% capacity retention at −22°F.

Earlier reports also highlighted the development of a silicon anode with a nanowire structure for solid-state batteries, a breakthrough expected to improve both safety and longevity. BYD, Geely, Chery, GAC, Dongfeng, FAW, and several other automakers plan to begin real-world testing of fully solid-state batteries next year.