China Leads World's First IEC Standard for EV Solid-State Batteries

China has led the successful establishment of the world's first International Electrotechnical Commission (IEC) standard for solid-state batteries used in electric vehicle traction, the State Administration for Market Regulation announced on August 21.

The standard, formally titled "Solid-state battery application guide, test items and conditions for electric vehicle traction secondary lithium-ion batteries," provides clear testing specifications for solid-state cells. It relies on China's accumulated research and development in solid-state battery technology.

Solid-state batteries are widely regarded as a crucial direction for the next generation of lithium-ion batteries. Compared with traditional liquid-electrolyte cells, they offer longer range, higher safety, and more stable performance.

The new IEC standard will give automakers worldwide a unified benchmark for developing and producing solid-state batteries, potentially accelerating the rollout of safer, longer-range electric vehicles and boosting the broader new-energy vehicle industry.

The standard was developed with expert participation from France, South Korea, Japan, and other countries, reflecting international collaboration on battery technology governance. By sharing advanced battery testing concepts through this standard, China aims to contribute to global battery industry upgrades and energy transition efforts.