en.Wedoany.com Reported - A research team from the Korea Advanced Institute of Science and Technology (KAIST), in collaboration with Dongguk University, Yonsei University, and Chungbuk National University, has proposed a new electrolyte design that increases the ionic conductivity of solid-state batteries by 2.7 times. This design addresses the issues of humidity sensitivity and limited conductivity in halide-based solid-state electrolytes, providing crucial support for the commercialization of all-solid-state batteries.

The research team employed an oxygen-anchoring strategy, introducing tungsten into the electrolyte to stabilize the crystal structure and prevent degradation in air. This improvement allows the electrolyte to maintain its structural integrity when exposed to air, while simultaneously optimizing the lithium-ion transport pathways, thereby enhancing ion flow efficiency.

Professor Donghwa Seo stated, "This research, through a structural design strategy, simultaneously improves air stability and ionic conductivity, providing an important indicator for all-solid-state battery research and process development."

This design principle is versatile and has been successfully applied to various electrolyte materials based on zirconium, indium, yttrium, and erbium, all achieving consistent performance improvements. This offers a feasible solution for upgrading next-generation battery materials.

Solid-state batteries are safer and less flammable compared to traditional liquid batteries, making them suitable for applications in electric vehicles, robots, and flying taxis. The new technology combines enhanced safety with fast-charging capabilities, holding promise for promoting the mass production of fire-resistant batteries.

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