吴俊莉, 童庆松, 刘永梅, 徐伟. 氟和钴共同掺杂对LiV3O8电化学性能的影响[J]. 云南大学学报(自然科学版), 2006, 28(6): 530-532,538.
引用本文: 吴俊莉, 童庆松, 刘永梅, 徐伟. 氟和钴共同掺杂对LiV3O8电化学性能的影响[J]. 云南大学学报(自然科学版), 2006, 28(6): 530-532,538.
shu
WU Jun-li, TONG Qing-song, LIU Yong-mei, XU Wei. Effect of F and Co co-doping on the electrochemical performance of lithium vanadium oxides[J]. Journal of Yunnan University: Natural Sciences Edition, 2006, 28(6): 530-532,538.
Citation: WU Jun-li, TONG Qing-song, LIU Yong-mei, XU Wei. Effect of F and Co co-doping on the electrochemical performance of lithium vanadium oxides[J]. Journal of Yunnan University: Natural Sciences Edition, 2006, 28(6): 530-532,538.
shu

氟和钴共同掺杂对LiV3O8电化学性能的影响

Effect of F and Co co-doping on the electrochemical performance of lithium vanadium oxides

    摘要
  • 摘要: 采用固相烧结法合成了同时掺杂氟离子和钴离子、具有单斜LiV3O8型结构的锂钒氧化物样品.通过充放电循环实验、循环伏安实验、XRD衍射和热分析对材料的理化性能进行了表征.实验结果表明,理论组成为Li1.38V2.99Co0.0107.98F0.02的样品的首次放电容量为233 mA·h/g,40次循环的放电容量为192 mA·h/g.在充放电过程中,同时掺氟和钴的样品的放电平台电压较高,表现出较好的循环性能.

     

    Abstract: A monoclinic LiV3O8 co-doped with F and Co ions was prepared by a solid-state sintering method.The tests doped samples was characterized by charge-discharge,cyclic voltammetry,XRD and thermal analysis.The charge-discharge results showed that F and Co co-doping can improve discharged platform and discharged capacities.The sample with a theoretic composition of Li1.4V2.99Co0.01O7.98F0.02 has a capacity of 233 mA·h/g in the 1st cycle,and 192 mA·h/g in the 40th cycle.The doped sample showed good cyclability with high voltage platform in the charge-discharge process.

     

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