Advancing high-voltage halide-based solid-state batteries: Interfacial challenges, material innovations, and applications
Yue Gong, Changtai Zhao, Dawei Wang, Xinmiao Wang, Zaifa Wang, Yanlong Wu, Yu Xia, Qihang Jing, Yue Ji, Yingying Jiang, Jianwen Liang, Xiao‐Na Li, Tao Jiang, Xueying Sun, Ximin Zhai, Huanli Sun, Xueliang Sun
Abstract
All-solid-state batteries represent a promising avenue for next-generation energy storage systems, offering the potential for high energy density and enhanced safety. Among solid-state electrolytes, halide solid-state electrolytes stand out due to their superior ionic conductivities , oxidation stability, and mechanical moldability. However, several challenges remain, particularly at the interface between halide solid-state electrolytes and ultra-high voltage cathodes, resulting in suboptimal electrochemical performance . This review systematically examines the interfacial issues that hinder the performance of halide-based all-solid-state batteries, focusing on interfacial reactions, mechanical failure, and suboptimal ion/electron transport. Furthermore, we explore three strategies to address these challenges: electrolyte design and refinement, cathode surface modification, and composite cathode preparation. We also discuss the practical challenges of transitioning from laboratory research to industrial-scale applications, offering a roadmap for future advancements in high-performance halide-based all-solid-state batteries.