Article

The Korea Research Institute of Standards and Science (KRISS) developed a materials technology that significantly reduces the production costs of all-solid-state batteries (ASSBs) to one-tenth of conventional levels. This technology addresses lithium evaporation issues during the high-temperature sintering process of garnet-type solid electrolytes.

The approach involves applying Li-Al-O-based multifunctional compounds to solid electrolyte powders, achieving over 98.2% density and enhancing ionic conductivity by more than twofold. The research team produced large-area solid electrolyte membranes measuring 16 cm² with a yield of 99.9%. This advancement is expected to facilitate domestic production of next-generation battery materials in South Korea.