Publications by authors named "Akihiro Shiota"
Article Synopsis
- The study focuses on the issue of degradation in the amorphous-LiNbO coating of sulfide-based all-solid-state batteries (SBs) during high-voltage charging, which negatively impacts battery performance.
- Researchers found that oxygen (O) is generated from the Li extraction in the coating layer, resulting in an oxidative solid electrolyte that further deteriorates battery efficiency.
- By substituting elements in the coating (specifically using amorphous-LiNbP O), oxygen release is minimized, leading to more stable charge-discharge reactions and improved energy density in SBs.
Coating the surface of the cathode active material of all-solid-state batteries with sulfide-based solid electrolytes is key for improving and enhancing the battery performance. Although lithium niobate (LiNbO) is one of the most representative coating materials, its low durability at a highly charged potential and high temperature is an impediment to the realization of high-performance all-solid-state batteries. In this study, we developed new hybrid coating materials consisting of lithium niobate (Li-Nb-O) and lithium phosphate (Li-P-O) and investigated the influence of the ratio of P/(Nb + P) on the durability performance.
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