A high-capacity graphene/mesocarbon microbead composite anode for lithium-ion batteries

作     者：Inna SMOLIANOVA Jin-long HU Xin-yue ZHAO Viacheslav DEMENTIEV Ling-zhi ZHANG Inna SMOLIANOVA;Jin-long HU;Xin-yue ZHAO;Viacheslav DEMENTIEV;Ling-zhi ZHANG

作者机构：CAS Key Laboratory of Renewable EnergyGuangdong Provincial Key Laboratory of New and Renewable Energy Research and DevelopmentGuangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640China University of Chinese Academy of SciencesBeijing 100049China FESCOM Technologies Ltd.Territory of the Innovation Center SkolkovoMoscow 143026Russia 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2020年第21卷第5期

页      面：392-400页

核心收录：

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Project supported by the National Natural Science Foundation of China(No.21573239) the Guangdong Provincial Project for Science and Technology(Nos.2014TX01N14,2015B010135008,and 2016B010114003) the Guangzhou Municipal Project for Science and Technology(No.201509010018) the K.C.WONG Education Foundation,China 

主　　题：Graphene Mesocarbon microbead(MCMB) Composite anode materials Lithium-ion batteries 

摘      要：The graphene/mesocarbon microbead(MCMB)composite is assessed as an anode material with a high capacity for lithium-ion *** composite electrode exhibits improved cycling stability and rate capability,delivering a high initial charge/discharge capacity of 421.4 mA·h/g/494.8 mA·h/g as well as an excellent capacity retention over 500 cycles at a current density of 40 mA/*** a higher current density of 800 mA/g,the electrode still retains 35%of its initial capacity which exceeds the capacity retention of pure graphene or MCMB reference *** voltammetry and electrochemical impedance spectroscopy reveal that the composite electrode favors electrochemical kinetics as compared with graphene and MCMB *** electrochemical properties suggest a strong synergetic effect between highly conductive graphene and MCMB.