The approval marks the start of standard development, rather than the publication of a final standard. Yang said the process will take two to three years and involve international negotiations and voting before the standard can be finalized and published. Yang added that China's battery industry has strong manufacturing capabilities but still needs to strengthen fundamental research.

　　Conventional lithium-ion batteries typically use flammable liquid electrolytes, which can pose safety risks if cells are damaged or overheat. Solid-state battery technology uses solid electrolytes and is being developed for its potential to improve safety and offer higher energy density.

　　Ji said solid-state battery technology worldwide remains at the research and testing stage and has yet to enter large-scale commercial use.

　　China's latest automotive technology road map, compiled by the China Society of Automotive Engineers under the guidance of the Ministry of Industry and Information Technology, projects small-scale use of all-solid-state batteries by 2030 and large-scale adoption worldwide by 2035.

　　Sun Huajun, chief technology officer of BYD Lithium Battery, said at an industry forum in February 2025 that BYD plans to begin small-scale production of sulfide-based all-solid-state batteries by 2027, with the batteries expected to be used in mainstream electric vehicle models by 2030.

　　Changan Automobile has said it expects to complete vehicle validation of solid-state batteries in 2026 and take initial steps toward mass production of all-solid-state batteries in 2027.

　　Gu Chunshan, vice-president of Chery Automobile, said in March that the company aims to begin vehicle validation of all-solid-state batteries in 2027. Chery said its pilot line has produced cells with different energy densities and that the cells are undergoing testing.