摘要
Conventional lithium-ion batteries(LIBs)with graphite anodes are approaching their theoretical limitations in energy density.Replacing the conventional graphite anodes with high-capacity Si-based anodes represents one of the most promising strategies to greatly boost the energy density of LIBs.However,the inherent huge volume expansion of Si-based materials after lithiation and the resulting series of intractable problems,such as unstable solid electrolyte interphase layer,cracking of electrode,and especially the rapid capacity degradation of cells,severely restrict the practical application of Sibased anodes.Over the past decade,numerous reports have demonstrated that polymer binders play a critical role in alleviating the volume expansion and maintaining the integrity and stable cycling of Si-based anodes.In this review,the state-of-the-art designing of polymer binders for Si-based anodes have been systematically summarized based on their structures,including the linear,branched,crosslinked,and conjugated conductive polymer binders.Especially,the comprehensive designing of multifunctional polymer binders,by a combination of multiple structures,interactions,crosslinking chemistries,ionic or electronic conductivities,soft and hard segments,and so forth,would be promising to promote the practical application of Si-based anodes.Finally,a perspective on the rational design of practical polymer binders for the large-scale application of Si-based anodes is presented.
出处
《InfoMat》
SCIE
CAS
2021年第5期460-501,共42页
信息材料（英文）
基金
Beijing National Laboratory for Molecular Sciences,Grant/Award Number:2019BMS20022
National Natural Science Foundation of China,Grant/Award Number:22005314
Strategic Priority Research Program of the Chinese Academy of Sciences,Grant/Award Number:XDA21070300
The China Postdoctoral Science Foundation,Grant/Award Number:2019M660805
The National Key R&D Program of China,Grant/Award Number:2019YFA0705600
The Special Financial Grant from the China Postdoctoral Science Foundation,Grant/Award Number:2020T130658。
作者简介
Correspondence:Yu-Guo Guo,is currently a postdoctoral researcher in Prof.Yu-Guo Guo's group at ICCAS.He received his PhD degree in Polymer Chemistry and Physics from ICCAS in 2016.He worked as a postdoctoral fellow at The Pennsylvania State University from 2017 to 2019.His research focuses on synthesis of functional polymeric materials and developing materials for energy storage and conversion application.CAS Key Laboratory of Molecular Nanostructure and Nanotechnology,CAS Research/Education Center for Excellence in Molecular Sciences,Beijing National Laboratory for Molecular Sciences(BNLMS),Institute of Chemistry,Chinese Academy of Sciences(CAS),Beijing 100190,China.Email:ygguo@iccas.ac.cn;Yu-Guo Guo received his PhD in physical chemistry from ICCAS in 2004.He worked at the Max Planck Institute for Solid State Research at Stuttgart(Germany)first as a guest scientist and then as a staff scientist from 2004 to 2007.He joined ICCAS as a full professor in 2007.His research focuses on nanostructured energy materials and electrochemical energy storage devices,such as Li-ion,Li–S,Li-metal,solid-state batteries,and Na-ion batteries.Yu-Guo Guo https://orcid.org/0000-0003-0322-8476。
