What drives the heterogeneous interdiffusion in the Li-Si interfacial region of Si anodes:the Li flux or the Si flux?  

作　　者：Fangjia Fu Xiaoxu Wang Taiping Hu Guobing Zhou Fu-Zhi Dai Shenzhen Xu 

机构地区：[1]School of Mathematical Sciences,Peking University,Beijing 100871,China [2]AI for Science Institute,Beijing 100084,China [3]DP Technology,Beijing 100080,China [4]School of Materials Science and Engineering,Peking University,Beijing 100871,China [5]Institute of Advanced Materials,Jiangxi Normal University,Nanchang 330022,China

出　　处：《npj Computational Materials》2024年第1期1919-1927,共9页计算材料学(英文)

基　　金：funding support from the Ministry of Science and Technology of People’s Republic of China(Grant No.2021YFB3800303);DP Technology Corporation(Grant No.2021110016001141);the National Natural Science Foundation of China(Grants No.22008096).

摘　　要：The electrochemical reaction in silicon(Si)electrode,accompanying with tremendous volume expansion,causes rapid capacity fade of Li-ion batteries.The Li-ion concentration gradient and structural distribution uniformity influence the inhomogeneous expansion,and the kinetic mechanism of lithiation and interfacial morphology evolvement remains debated.

关 键 词：INTERFACIAL expansion diffusion 

分 类 号：O64[理学—物理化学]