Kinetic Limits of Graphite Anode for Fast‑Charging Lithium‑Ion Batteries

作     者：Suting Weng Gaojing Yang Simeng Zhang Xiaozhi Liu Xiao Zhang Zepeng Liu Mengyan Cao Mehmet Nurullah Ateş Yejing Li Liquan Chen Zhaoxiang Wang Xuefeng Wang Suting Weng;Gaojing Yang;Simeng Zhang;Xiaozhi Liu;Xiao Zhang;Zepeng Liu;Mengyan Cao;Mehmet Nurullah Ateş;Yejing Li;Liquan Chen;Zhaoxiang Wang;Xuefeng Wang

作者机构：Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190People’s Republic of China School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing 100049People’s Republic of China College of Materials Science and Opto‑Electronic TechnologyUniversity of Chinese Academy of SciencesBeijing 100049People’s Republic of China Department of ChemistryBoğazici UniversityBebekIstanbul 34342Türkiye Tianmu Lake Institute of Advanced Energy Storage Technologies Co.Ltd.Liyang 213300People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2023年第15卷第11期

页      面：518-529页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(NSFC No.52172257 and 22005334) the Natural Science Foundation of Beijing(Grant No.Z200013) the National Key Research and Development Program of China(Grant No.2022YFB2502200) 

主　　题：Fast-charging Graphite anode Cryogenic transmission electron microscopy(cryo-TEM) High-rate kinetics 

摘      要：Fast-charging lithium-ion batteries are highly required,especially in reducing the mileage anxiety of the widespread electric *** of the biggest bottlenecks lies in the sluggish kinetics of the Li^(+)intercalation into the graphite anode;slow intercalation will lead to lithium metal plating,severe side reactions,and safety *** premise to solve these problems is to fully understand the reaction pathways and rate-determining steps of graphite during fast Li^(+)***,we compare the Li^(+)diffusion through the graphite particle,interface,and electrode,uncover the structure of the lithiated graphite at high current densities,and correlate them with the reaction kinetics and electrochemical *** is found that the rate-determining steps are highly dependent on the particle size,interphase property,and electrode *** Li^(+)diffusion leads to high polarization,incomplete intercalation,and the coexistence of several staging *** Li^(+)diffusion and electrode transportation are the main rate-determining steps if the particle size is less than 10μ*** former is highly dependent on the electrolyte chemistry and can be enhanced by constructing a fluorinated *** findings enrich the understanding of the graphite structural evolution during rapid Li^(+)intercalation,decipher the bottleneck for the sluggish reaction kinetics,and provide strategic guidelines to boost the fast-charging performance of graphite anode.