Preparation of Materials for All-Solid-State Batteries via a Mechanochemical Process

Abstract

All-solid-state rechargeable batteries with inorganic solid electrolytes have a big advantage of high safe and reliability. A key material for realizing solid-state batteries is a solid electrolyte with high conductivity and favorable formability. Glass-based Li⁺ or Na⁺ ion conductors were prepared via a mechanochemical process using a planetary ball mill apparatus. Prepared glass particles are useful for forming good electrode-electrolyte contacts. Amorphous positive electrode active materials were also prepared via mechanochemistry, and they showed a high capacity and good cyclability. In this study, recent development of amorphous solid electrolytes and positive electrodes of sulfides and oxides is reported.

Graphical Abstract