Precision Chemical Routes to Achieve Superior Oxyhalide Solid Electrolytes in Advanced All-Solid-State Batteries.

作者：Han Wu, Chong Liu, Simeng Zhang, Jianwen Liang, Xiaona Li · 发表于：Accounts of Chemical Research · 年份：2026 · DOI：10.1021/acs.accounts.6c00035 · 研究领域：Medicine

ConspectusOxyhalide solid-state electrolytes (SSEs) represent a strategically important subclass of halide-based materials that offer a promising solution to critical challenges in all-solid-state batteries (ASSBs), such as poor interfacial stability and mechanical fragility. By incorporating oxygen into halide frameworks, these materials preserve the wide electrochemical stability and cathode compatibility of halide SSEs while simultaneously enabling ionic conductivities exceeding 10-2 S cm-1 and enhanced thermal resilience through carefully designed oxygen incorporation routes. This unique combination makes them a frontier material class for next-generation energy storage. The precise control of oxygen content is central to optimizing oxyhalide performance. Techniques including targeted substitution reactions, nanoscale oxide additions, and the use of oxygen-rich precursors have enabled the creation of novel SSE architectures. These methods allow for meticulous defect engineering and phase purity control, which are essential for tuning bulk ionic transport and managing interfacial behavior, particularly against reactive lithium metal anodes and high-voltage cathodes operating above 4.8 V vs Li+/Li. As global efforts such as the HELENA Project and multiple academic breakthroughs converge on the development of safer and more scalable battery chemistries, oxyhalide SSEs stand out as a frontier platform with significant implications for future electric vehicles, grid storage, a...