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碳纳米管与还原氧化石墨烯构建高倍率石墨电极
引用本文:郑小燕,贾世奎,谢萍,吴子平,黎业生. 碳纳米管与还原氧化石墨烯构建高倍率石墨电极[J]. 稀有金属材料与工程, 2022, 51(6): 2192-2198
作者姓名:郑小燕  贾世奎  谢萍  吴子平  黎业生
作者单位:江西理工大学 材料冶金化学学部 江西 341000,江西理工大学 材料冶金化学学部 江西 341000,江西理工大学 材料冶金化学学部 江西 341000,江西理工大学 材料冶金化学学部 江西 341000,江西理工大学 材料冶金化学学部 江西 341000
基金项目:国家自然科学基金51861009,江西省教育厅科技重点项目GJJ160596
摘    要:通过在金属铜箔上均匀排布碳纳米管宏观膜(carbon nanotubes (CNTs) macro film,CMF),制成复合集流体(Cu-CMF),从而改善活性物质与集流体的结合性,降低电池界面电阻,在活性材料石墨中掺杂还原氧化石墨烯(r GO),增大了活性物质石墨颗粒间的接触位点,最后获得高比容量和化学稳定性的电池。采用扫描电子显微镜和电化学测试对复合集流体的微观形貌及电化学性能等进行表征。结果表明,基于Cu-CMF复合集流体掺杂r GO的石墨电极,在2 C倍率下发挥101.5 m Ah·g-1的比容量,是未掺杂基于铜箔集流体的石墨电极(26.3 m Ah·g-1)的3.7倍以上,表现出优异的倍率性能。

关 键 词:石墨烯  碳纳米管  石墨  倍率性能
收稿时间:2021-06-10
修稿时间:2021-08-06

Carbon nanotubes and reduced graphene oxide to construct high-rate graphite electrodes
ZHENG Xiao-yan,JIA Shi-kui,XIE Ping,WU Zi-ping and LI Ye-sheng. Carbon nanotubes and reduced graphene oxide to construct high-rate graphite electrodes[J]. Rare Metal Materials and Engineering, 2022, 51(6): 2192-2198
Authors:ZHENG Xiao-yan  JIA Shi-kui  XIE Ping  WU Zi-ping  LI Ye-sheng
Abstract:: By arranging the Carbon nanotubes (CNTs) macrofilm (CMF) on the meta copper foil evenly,which is made into compositecurrent collector (Cu-CMF),to improve the associativity of active substance with current collector, reduce the interfacial resistance of the battery. Mingle the reduced graphene oxide(rGO)in active substance graphite to increase the contact point between graphite particles of active substance, which help obtain the high specific capacity and chemical stability battery. Characterization was executed by scanning electron microscopy(SEM) and electrochemical testing. The results show that the graphite electrode has a specific capacity of 102.7 mAh g-1 at a ratio of 2 C based on Cu-CMF composite collector mingle with rGO, which is the 3.7 times(27.4 mAh g-1) of the undoped graphite electrode based on copper foil collector. It shows the excellent rate capability.
Keywords:Graphene   Carbon nanotubes   Graphite   Rate performance
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