【作者】 崔涛； 王要武； 尚玉明； 李建军； 胡旭尧； 何向明； 方谋； 赵骁； 陈敬波；

【Author】 CUI Tao~(1,2),WANG Yaowu~2,SHANG Yuming~2,LI Jianjun~1,HU Xuyao~(2,3),HE Xiangming~2,FANG Mou~2,ZHAO Xiao~2,CHEN Jingbo~2 1 College of Environmental and Chemical Engineering,Yanshan University,Qinhuangdao,China 2 Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing,China 3 College of Chemical & Biological Engineering,Changsha University of Science and Technology,Changsha,China

【机构】 燕山大学环境与化学工程学院； 清华大学核能与新能源技术研究院； 长沙理工大学化学与生物工程学院；

【摘要】 以NaBH₄为还原剂,采用液相还原法制备了Si/Ag复合材料。采用XRD和SEM对Si/Ag复合材料进行了物相和形貌分析,并将其作为锂离子电池负极材料进行了电化学性能测试。XRD测试结果表明复合材料中的硅与银均以单质形式存在,且不存在其他化合物和杂质。SEM测试结果表明银呈纳米颗粒状分散在硅颗粒表面。充放电性能测试结果表明,Si/Ag复合材料与纯硅相比表现出了良好的循环性能。更多还原

【Abstract】 Silicon/silver composite was prepared by liquid phase reduction method,where sodium borohydride acting as the reducing agent was utilized.The phase and surface morphology of Si/Ag composite was studied by XRD and SEM.The electrochemical performance of the composite was investigated by charge/discharge test.XRD results indicate that the silicon and silver are in the form of single substance without other compound and impurity.SEM results show that silver nanoparticles were dispersed in the surface of the silicon particles.Charge/discharge test results show that the Si/Ag composite exhibit better cycle performance compared with pure silicon.更多还原