采用医用棉花制备锂离子电池负极材料  

Preparation of Li-ion battery anode material from medical cotton

作　　者：马思琪 蓝键 谢卓鸿 尹荔松 MA Si-qi;LAN Jian;XIE Zhuo-hong;YIN Li-song(School of Applied Physics and Materials,Wuyi University,Jiangmen,Guangdong 529020,China;Faculty of Intelligent Manufacturing,Wuyi University,Jiangmen,Guangdong 529099,China)

机构地区：[1]五邑大学应用物理与材料学院,广东江门529020 [2]五邑大学智能制造学部,广东江门529099

出　　处：《电池》2021年第1期37-40,共4页Battery Bimonthly

基　　金：广东省产学研应用专项项目(2014B090904084);广东省重大专项项目(2016B0113003)。

摘　　要：用KOH活化生物质医用棉花制备多孔碳材料。采用SEM、XRD、拉曼光谱、N_(2)吸-脱附和透射电子显微镜(TEM)等测试进行结构和形貌分析;用恒流充放电测试研究电化学性能。医用棉花与KOH质量比为1∶3时,样品的比表面积最大且具有多级孔结构,用做锂离子电池负极材料时的电化学性能较好。在0.01~3.00 V循环,0.10 A/g首次充、放电比容量分别为492.4 mAh/g和996.1 mAh/g;以0.50 A/g循环150次,库仑效率为99.8%。Porous carbon materials was prepared by KOH activating biomass medical cotton.SEM,XRD,Raman spectroscopy,N_(2) adsorption-desorption and transmission electron microscope(TEM)were used to analyze the structure and morphology,galvanostatic charge-discharge test was used to research its electrochemical performance.When the mass ratio of medical cotton to KOH was 1∶3,the sample had the largest specific surface area and a hierarchical pore structure.When used as anode material material of Li-ion battery,it had fine electrochemical performance.When cycled in 0.01-3.00 V,the initial charge and discharge specific capacity at 0.10 A/g was 492.4 mAh/g and 996.1 mAh/g;when cycled 150 times at 0.50 A/g,the Coulombic efficiency was 99.8%.

关 键 词：锂离子电池 负极材料 医用棉花 活化 多孔碳 

分 类 号：TM912.9[电气工程—电力电子与电力传动]