Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (5): 20220703.doi: 10.7503/cjcu20220703

• Review • Previous Articles    

Research Advances in Transport Mechanism of Lithium Ions in Solid Electrolytes

FU Zhongheng1, CHEN Xiang1, YAO Nan1, YU Legeng1, SHEN Xin1, ZHANG Rui2, ZHANG Qiang1()   

  1. 1.Department of Chemical Engineering,Tsinghua University,Beijing 100084,China
    2.Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing 100081,China
  • Received:2022-11-07 Online:2023-05-10 Published:2023-01-04
  • Contact: ZHANG Qiang E-mail:zhang-qiang@mails.tsinghua.edu.cn
  • Supported by:
    the National Key Research and Development Program, China(2021YFB2500300);the Beijing Municipal Natural Science Foundation, China(Z200011);the National Natural Science Foundation of China(22109086);the China Postdoctoral Science Foundation(2021TQ0161);the Foundation of Guoqiang Institute at Tsinghua University Foundation of China(2020GQG1006)

Abstract:

Global challenges have promoted the rapid development of rechargeable lithium battery technology. Solid-state electrolytes are less flammable than liquid electrolytes. If the ion transport behavior in solid electrolytes is well understood, the lithium dynamic stability and rate performance of solid state batteries can be accurately regulated. With the rapid development of calculation technology, atomic scale simulation technology has become an important method to understand the ion transport of materials. To solve the above problems, this review firstly summarizes the common diffusion mechanisms in solid materials. Then the transport mechanism of lithium ions in solid electrolytes is introduced, and the important factors(crystal structure, electronic structure, external factors, grain boundaries) affecting the transport of lithium ions in solid electrolytes are emphatically included. Finally, the transport mechanism of lithium ion in solid electrolytes is summarized and prospected.

Key words: Solid-state battery, Solid electrolyte, Density functional theory calculation, Molecular dynamics simulation

CLC Number: 

TrendMD: