摘要
Sb基材料因具有理论容量高、储量丰富、来源广泛、环境友好和安全性高等优势已成为颇具前景的钾离子电池负极材料。但Sb基材料普遍面临结构稳定性较差、动力学迟缓、导电性差等棘手问题,在进行钾离子脱嵌时,材料结构变化大,粉化严重,造成容量衰减过快,仅能获得较差的循环稳定性。此外,固体电解质界面膜(SEI膜)的稳定性也极大地影响着Sb基材料的循环性能。这些问题严重阻碍了Sb基材料发展的脚步。本文归纳了各类Sb基材料的研究进展,重点介绍了通过调控材料结构以及调节电解液体系对电化学性能的影响,对高性能钾离子电池Sb基负极材料的设计做出了展望。
Sb-based materials have become a promising anode for potassium ion batteries(PIBs)due to its advantages of high theoretical specific capacity,abundant reserves,wide sources,environmental friendliness and high safety.However,Sb-based materials generally suffer from many problems such as poor structural stability,sluggish dynamics and indisposed electrical conductivity.In the process of K+de-intercalation,the structure is prone to obvious changes and even material pulverization,resulting in rapid capacity decay and poor cycle stability.Furthermore,the stability of solid electrolyte interface film(SEI)also greatly affects the cycling performances of Sb-based materials.These problems seriously hinder the development of Sb-based materials.Herein,the research progress of various Sb-based materials is summarized,the influence of adjusting structure and electrolyte system on electrochemical performance is emphasized,and the design of Sb-based anode materials for high-performance PIBs is prospected.
作者
石雪建
刘万强
王春丽
程勇
王立民
SHI Xue-Jian;LIU Wan-Qiang;WANG Chun-Li;CHENG Yong;WANG Li-Min(State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,CAS,Changchun 130022,China;School of Materials Science and Engineering,Changchun University of Science and Technology,Changchun 130012,China)
出处
《应用化学》
CAS
CSCD
北大核心
2023年第2期210-228,共19页
Chinese Journal of Applied Chemistry
基金
国家重点研发计划项目(No.2017YFE0198100)
国家自然科学基金(Nos.21975250,11902144,52072145)
吉林省科技厅发展项目(Nos.20200401031GX,YDZJ202101ZYTS185)
环境友好材料制备与应用教育部重点实验室(吉林师范大学)开放项目(Nos.2020005,2021007)
亚稳态材料科学与技术国家重点实验室(燕山大学)开放项目(No.202110)资助。
关键词
钾离子电池
Sb基负极材料
电解液的优化
电化学性能
Potassium ion batteries Sb-based anode materials
Optimization of electrolyte
Electrochemical performance
