锂离子电池石墨烯/硅负极材料的制备及电化学性能研究  

Preparation and Electrochemical Performance of Graphene/Silicon Anode Materials for Lithium-ion Batteries

作　　者：赵露 毋应科 袁国辉[2] 李子坤 王朝阳[1] 李云[1,3] Zhao Lu;Wu Yingke;Yuan Guohui;Li Zikun;Wang Chaoyang;Li Yun(School of Materials Science and Engineering,South China University of Technology,Guangdong,510641;School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Heilongjiang,150000;BTR New Materials Group Co.,Ltd.,Guangdong,518106;Yongqing Graphene Research Institute Co.,Ltd.,Yong'an City,Fujian Province,Fujian,366000)

机构地区：[1]华南理工大学材料科学与工程学院,广东510641 [2]哈尔滨工业大学化学与化工学院,黑龙江150000 [3]贝特瑞新材料集团股份有限公司,广东518106 [4]福建永安市永清石墨烯研究院有限公司,福建366000

出　　处：《当代化工研究》2024年第23期1-3,共3页Modern Chemical Research

摘　　要：以丙烯为碳源,利用化学气相沉积(CVD)的简单方法,在纳米硅颗粒(Si NPs)表面自催化原位生长石墨烯(G),制备出Si@G复合材料。在Si NPs上生长的G的骨架结构在电化学循环过程中很稳定。此外,电解液还能在Si@G复合材料表面形成稳定的固体电解质界面膜(SEI)结构,它避免了传统硅负极在循环过程中发生的结构破坏和SEI膜的反复生成,从而对电极材料的体积膨胀起到抑制作用。Si@G composites were prepared by a simple CVD method using propylene as carbon source and autocatalytic in-situ growth of G on the surface of Si NPs.That G cultivated on Si,the backbone structure remains stable throughout electrochemical cycling.In addition,the elec-trolyte can form a stable SEI membrane structure on the surface of the Si@G composite material,avoiding the structural breakage and the repeated formation of the SEI of the traditional silicon anode during the cycling process,and suppressing the volume expansion of the electrode material.The electrochemical test results indicate that the prepared Si@G composites deliver excellent rate performance and cycling stability.

关 键 词：化学气相沉积 硅负极 石墨烯 锂离子电池 

分 类 号：TB30[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]