Constructing a"pea-pod"-like nanostructure to provide valid conductive matrix and volume change accommodation for silicon anode in lithium ion batteries

作     者：Jingjing Ma Huan Zhang Yuanchao Li Linfeng Hu Qing Wang WanQing Zhang Li Yang Guang-Ri Xu Yu-Shi He Tianjun Lou Zi-Feng Ma Jingjing Ma;Huan Zhang;Yuanchao Li;Linfeng Hu;Qing Wang;WanQing Zhang;Li Yang;Guang-Ri Xu;Yu-Shi He;Tianjun Lou;Zi-Feng Ma

作者机构：College of Chemistry and Chemical EngineeringHenan Institute of Science and TechnologyHenan453003China Shanghai Electrochemical Energy Devices Research CenterSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai200240China 

出 版 物：《Green Chemical Engineering》 (绿色化学工程（英文）)

年 卷 期：2021年第2卷第3期

页      面：327-335页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 070205[理学-凝聚态物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(21703057) the He'nan Postdoctoral Science Foundation(1902040,00182023) the Foundation of the Programs for Science and Technology Development of He'nan province(202102210107,192102210016,192102310249) Xinxiang city(GG2019011) the Natural Science Foundation of Shanghai(19ZR1424600). 

主　　题：Silicon Graphene Anode material Freeze-drying Lithium-ion battery 

摘      要：Apea-pod-like composite of graphene-wrapped silicon nanoparticles(P–Si@GS)was successfully prepared via a new and facial technique utilizing freeze-drying and subsequent solvothermal process.The cross-linkedpodsformed by curled few-layer graphene sheets constituted a conductive network,in which silicon nanoparticles were tightly wrapped.The unique graphene-wrapped structure with mesopores on the surface can effectively enhance the conductivity of silicon,alleviate its volume effect and provide rapid transport channels for electrons and ions,thus resulting in excellent electrochemical performance.The strategy of combining freeze-drying and solvothermal methods is facile,low-cost and effective,which provides new ideas for the preparation of highperformance graphene-wrapped nanoparticles composites.