PAN/GO包覆改性C/MnO_2合成锂离子电池负极材料及性能研究  

Research of Anode Material as Lithium-ion Battery Synthesized by PAN/GO Coated Modified C/MnO_2 and Its Performance

作　　者：张婉容[1] 万凯[1] 肖海宏 孙红光[1] 茹帅 艾照全[1] ZHANG Wan-rong;WAN Kai;XIAO Hai-hong;SUN Hong-guang;RU Shuai;AI Zhao-quan(Key Laboratory for the synthesis and Application of Organic Function Molecules,Ministry of Educatio;College of Chemistry and Chemical Engineering,Hubci University,Wuhan 430052)

机构地区：[1]有机功能分子合成与应用教育部重点实验室湖北大学化学化工学院,武汉430062

出　　处：《胶体与聚合物》2018年第3期127-130,共4页Chinese Journal of Colloid & Polymer

摘　　要：本文以碳基二氧化锰(C/MnO_2)为前驱体,用聚丙烯腈(PAN)/氧化石墨烯(GO)包覆改性前驱体合成锂离子电池负极材料。通过XRD、XPS、SEM对材料进行结构形貌表征。结果显示,复合材料为氮、碳基锰氧化物,随包覆物PAN和GO含量减少,复合材料由颗粒嵌入平整膜转变为褶皱纱状覆盖颗粒物;在PAN/GO与C/MnO_2包覆比例为3:3时,碳化改性制备的复合材料电极有最优充放电性能,在200 A g^(-1)电流密度条件下,经过100次循环后放电比容量为447 m Ahg^(-1)。In this paper,carbon-based manganese dioxide（C/MnO2） is used as the precursor,and then,the precursor was coated by polyacrylonitrile（PAN）/graphene oxide（GO） to synthesize the anode material of lithium-ion battery.The structure and morphology of the synthesized samples were characterized by XRD,XPS and SEM.The results showed that the composites were nitrogen and carbon-based manganese oxides.With the decrease of PAN and GO content of the coating,the composites were transformed from particles embedded in a flat film to wrinkled yarn-like covering particles.When the coating ratio of PAN/GO and C/MnO2 is 3：3,the composite electrode prepared by carbonization has the best charge-discharge performance.At a current density of 200 mAg^-1,the discharge specific capacity is 447 mAh g^-1 after 100 cycles.

关 键 词：聚丙烯腈 氧化石墨烯 氮碳基锰氧化物 锂离子电池 负极材料 

分 类 号：TQ152[化学工程—电化学工业]