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无机材料学报

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高压正极/硫化物固态电解质界面研究进展：失效机制、稳定化策略与表征

李乐1,2, 任俊超1,2, 尚琨3, 陆红4, 丁飞1,2   

  1. 1.河北工业大学 智能配用电装备与系统国家重点实验室,天津 300401;
    2.河北工业大学 电气工程学院,天津 300401;
    3.复杂航空系统仿真全国重点实验室,北京 100076;
    4.空天飞行技术全国重点实验室,北京 100074
  • 收稿日期:2026-04-13 修回日期:2026-05-26
  • 通讯作者: 李 乐(1992-), 女, 讲师. E-mail: liyue@hebut.edu.cn;丁 飞, 教授. E-mail: hilldingfei@hebut.edu.cn
  • 作者简介:李 乐(1992-), 女, 讲师. E-mail: liyue@hebut.edu.cn
  • 基金资助:
    河北省全职引进高端人才科研项目(2020HBQZYC017)

Recent Progress in High-Voltage Cathode/Sulfide Solid-state Electrolyte Interfaces: Failure Mechanisms, Stabilization, and Characterization

LI Yue1,2, REN Junchao1,2, SHANG Kun3, LU Hong4, DING Fei1,2   

  1. 1. State Key Laboratory of Intelligent Power Distribution and Utilization Equipment and System, Hebei University of Technology, Tianjin 300401, China;
    2. School of Electrical Engineering, Hebei University of Technology, Tianjin 300401, China;
    3. National Key Laboratory of Complex Aviation Systems Simulation, Beijing 100076, China;
    4. National Key Laboratory of Aerospace Flight Technology, Beijing 100074, China
  • Received:2026-04-13 Revised:2026-05-26
  • Contact: LI Yue (1992–), female, lecturer. E-mail: liyue@hebut.edu.cn;DING Fei, professor. E-mail: hilldingfei@hebut.edu.cn
  • About author:LI Yue (1992–), female, lecturer. E-mail: liyue@hebut.edu.cn
  • Supported by:
    The Project for Full-time High-end Talents Introduction of Hebei of China (2020HBQZYC017)

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摘要： 硫化物固态电解质(SSEs)具有高离子电导率和良好的加工性能,是极具前景的全固态电池(ASSBs)电解质材料。然而,在与高压正极耦合过程中,受限于氧化稳定性和界面相容性,正极/硫化物SSEs界面易发生劣化,进而严重制约电池的循环性能。该界面劣化过程通常涉及多种因素的耦合作用,包括化学/电化学失稳、空间电荷层效应以及接触损伤的演化。在此基础上,本文系统分析了界面反应路径、传输限制及结构演变,综述了界面相工程、电解质本征调控及界面电荷再分布等稳定化策略,并总结了多尺度与原位表征技术在揭示界面动态演化中的关键作用。通过整合界面失效机制、材料设计策略与先进表征方法,有望为高压正极/硫化物SSEs的界面稳定化提供指导,并推动硫化物基ASSBs的发展。

关键词: 全固态电池, 硫化物固态电解质, 高压正极, 界面稳定化, 综述

Abstract: Sulfide solid-state electrolytes (SSEs) are one of the most promising electrolytes for all-solid-state batteries (ASSBs) due to their high ionic conductivity and excellent processability. However, their limited oxidative stability and poor interfacial compatibility with high-voltage cathodes cause severe interfacial degradation, restricting ASSBs’ cycling stability. This interfacial degradation process typically involves the coupling of multiple factors, including chemical/electrochemical instability, space-charge-layer effects, and the evolution of contact damage. On this basis, this review systematically analyzes interfacial reaction pathways, transport limitations, and structural evolution at cathode/sulfide SSE interfaces. Stabilization strategies, including interphase engineering, intrinsic regulation of sulfide SSEs, and interfacial charge redistribution, are further summarized. The critical role of multi-scale and in-situ characterization techniques in revealing the dynamic evolution of the interface is also highlighted. Integration of mechanistic insights, interfacial design principles and advanced characterization provides crucial guidance for stabilizing the high-voltage cathode/sulfide SSEs interface and promoting sulfide-based ASSBs toward practical applications.

Key words: all-solid-state battery, sulfide solid-state electrolyte, high-voltage cathode, interfacial stability, review

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