China-led international standardization work on all-solid-state batteries ... passes the ridge

*This content was translated by AI.

The International Electrotechnical Commission (IEC) recently approved a China-led proposal for international standards on solid-state batteries for electric road vehicles. This proposal aims to establish common testing and application parameters for solid-state batteries, with standardization procedures to be carried out over the next 24 to 36 months through a working group involving South Korea, China, France, Japan, and others.

According to the proposed methodology, true "all-solid-state" batteries are distinguished from semi-solid batteries based on whether mass loss due to volatile organic evaporation exceeds 0.5% after drying battery cells in a vacuum chamber at 120°C for six hours. This serves as a criterion to clearly classify batteries previously referred to by mixed designs of semi-solid and all-solid-state types.

The Chinese government's support is also swift. The battery consumption tax policy has already been implemented. Starting from the 1st of this month, a 2% consumption tax will be levied on general lithium-ion battery products, which will be increased to 4% from September 1, 2027. In contrast, solid-state batteries, sodium-ion batteries, and fuel cells will remain exempt from the consumption tax until December 31, 2028.

Meanwhile, pilot line operations by battery companies in China are gradually accelerating. Sunwoda has begun operating a solid-state battery sample production line with an annual capacity of 0.2 GWh and is pursuing an energy density target of 400 Wh/kg. EVE Energy also unveiled a 60 Ah prototype cell. However, technical challenges such as the high cost of sulfide-based solid electrolytes, maintaining internal cell interface contact, and managing stack pressure remain, leading to expectations that additional time will be required before full-scale mass production begins.

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*This content was translated by AI.