Mechanism understanding for stripping electrochemistry of Li metal anode

SusMat

article

Feng-Ni Jiang¹  Shi-Jie Yang³  He Liu³  Xin-Bing Cheng²  Lei Liu¹  Rong Xiang⁴  Qiang Zhang²  Stefan Kaskel⁵  Jia-Qi Huang³ 

[1] College of Chemistry and Chemical Engineering, Taiyuan University of Technology;Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University;Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology;Department of Mechanical Engineering, University of Tokyo;Department Chemical Surface and Reaction Technology, Technische Universität Dresden

关键词: dead lithium;    dendrite;    lithium metal batteries;    solid electrolyte interphase;    stripping models;   

DOI  :  10.1002/sus2.37

学科分类：电力

来源: Wiley

【 摘 要 】

The pursuit of sustainable energy has a great request for advanced energy storage devices. Lithium metal batteries are regarded as a potential electrochemical storage system because of the extremely high capacity and the most negative electrochemical potential of lithium metal anode. Dead lithium formed in the stripping process significantly contributes to the low efficiency and short lifespan of rechargeable lithium metal batteries. This review displays a critical review on the current research status about the stripping electrochemistry of lithium metal anode. The significance of stripping process to a robust lithium metal anode is emphasized. The stripping models in different electrochemical scenarios are discussed. Specific attention is paid to the understanding for the electrochemical principles of atom diffusion, electrochemical reaction, ion diffusion in solid electrolyte interphase (SEI), and electron transfer with the purpose to strengthen the insights into the behavior of lithium electrode stripping. The factors affecting stripping processes and corresponding solutions are summarized and categorized as follows: surface physics, SEI, operational and external factors. This review affords fresh insights to explore the lithium anode and design robust lithium metal batteries based on the comprehensive understanding of the stripping electrochemistry.

【 授权许可】

CC BY