摘要
基于无机固态电解质体系的全固态电池,具有高能量密度、长循环寿命和高安全性等特点,被认为是下一代电化学储能电池中备受期待的候选体系。实现高性能全固态电池的关键在于设计和制备具有高离子电导率、界面稳定且易形变的固态电解质材料。金属氯化物型固态电解质作为一种新兴的材料体系,同时具备氧化物固态电解质的抗氧化性以及硫化物固态电解质的高离子传导率和机械延展性,且制备过程简单,无须严苛的环境和极高的烧结温度,可规模化生产潜力大,正逐渐成为实现全固态电池商业化的技术路线竞争者之一。本文通过对近五年来相关电解质材料研究进展的深入分析,对金属氯化物固态电解质体系的研究现状进行了系统评述,涵盖了其合成方法学、晶体结构学、离子传导机制、性能优化策略、电极-电解质界面兼容性以及实用化可行性分析等多个方面。同时,展望了金属氯化物固态电解质未来可能的发展方向,为基于金属氯化物的高性能全固态电池的研究提供了理论和实验参考。
Solid-state batteries based on inorganic solid electrolytes with high energy density,long cycle life,and good safety are highly competitive candidates for the next generation of electrochemical energy storage systems.The key to achieving high-performance solid-state batteries is designing and fabricating solid electrolytes with high ionic conductivity,stable interfaces,and deformability.Metal chloride solid electrolytes(MCSEs),emerging as a novel material system,possess anti-oxidation stability of oxide solid electrolytes and high ionic conductivity and mechanical ductility of sulfide solid electrolytes.The fabrication process is simple and requires neither stringent environmental conditions nor extremely high sintering temperatures.It has substantial potential for scalable production,making it one of the most promising choices for commercializing solid-state batteries.This article,through an in-depth analysis of solid electrolyte research progress in the past five years,systematically reviews the research status of MCSEs.These aspects encompass synthesis methodologies,crystal structure studies,ion conduction mechanisms,performance optimization strategies,electrodeelectrolyte interfaces,and the potential for practical applications.In addition,the future development directions of MCSEs and potential approaches to address interface issues are discussed,laying the theoretical and experimental foundations for developing high-performance solid-state lithium batteries based on MCSEs.
作者
李枫
程晓斌
罗锦达
姚宏斌
LI Feng;CHENG Xiaobin;LUO Jinda;YAO Hongbin(Hefei National Research Center for Physical Sciences at the Microscale,University of Science and Technology of China;School of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230026,Anhui,China)
出处
《储能科学与技术》
CSCD
北大核心
2024年第1期193-211,共19页
Energy Storage Science and Technology
基金
国家自然科学基金(22325505,52073271,21875236)。
关键词
金属氯化物
固态电解质
离子传导机制
全固态电池
metal chlorides
solid-state electrolyte
ion conduction mechanism
all-solid-state batteries
