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电化学(中英文) ›› 2008, Vol. 14 ›› Issue (2): 146-149.  doi: 10.61558/2993-074X.1880

• 研究论文 • 上一篇    下一篇

聚苯胺掺杂对C-LiFePO_4复合正极材料性能的影响

王伟;焦丽芳;袁华堂;   

  1. 南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所 天津300071,天津300071,天津300071
  • 收稿日期:2008-05-28 修回日期:2008-05-28 出版日期:2008-05-28 发布日期:2008-05-28

Electrochemical Performance of C-LiFePO_4 by Polyaniline Doping

WANG Wei,JIAO Li-fang,YUAN Hua-tang   

  1. (Institude of New Energy Material Chemisity,Nankai University,Tianjin 300071,China
  • Received:2008-05-28 Revised:2008-05-28 Published:2008-05-28 Online:2008-05-28

摘要: 应用固相反应法在惰性气氛下合成橄榄石型LiFePO4,然后制成聚苯胺掺杂C-LiFePO4复合正极材料.XRD,交流阻抗及电化学方法等测试表明,聚苯胺掺杂对LiFePO4电化学性能有一定的改善.当放电倍率为0.1C时,掺杂10%聚苯胺的(C-LiFePO4)0.9(PANI)0.1样品的放电容量达到164 mAh.g-1,且循环稳定性良好.在0.5C和1C的放电倍率下,也可以分别达到121.6 mAh.g-1和110.1 mAh.g-1的放电比容量.

关键词: 磷酸亚铁锂, 聚苯胺, 正极材料

Abstract: The olivine LiFePO4 cathode materials were synthesized using the solid state method in an inert atmosphere by doping polyaniline into the C-LiFePO4.It was found that the electrochemical performance of polyaniline-doped C-LiFePO4 slightly improved.At a low discharging rate(0.1C), the capability of(C-LiFePO4)0.9(PANI)0.1 reached 164 mAh·g-1.When the charge-discharge rate is increased to 0.5C and 1.0C,the showed capacities of 121.6 mAh·g-1 and 110.1 mAh·g-1 were obtained,respectively.

Key words: lithium iron phosphate, polyaniline, positive material.

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