采用两段加热高温固相法制备了锂离子电池正极材料LiFe1-xCoxPO4(x=0,0.02,0.04,0.06,0.08),采用XRD、SEM、四探针法和恒电流充放电等方法研究了材料的结构和电化学性能,结果表明:LiFe1-xCoxPO4样品具有与LiFePO4相同的橄榄石结构;相对LiFePO4,LiFe1-xCoxPO4样品的充放电平台没有明显变化,电导率可提高4～6个数量级.LiFe0.94Co0.06PO4样品的性能较好,0.1 C下的首次放电比容量可达到137 mAh/g,30次循环后的容量保持率为87.6%.
作 者：赖春艳 解晶莹 LAI Chun-yan XIE Jing-ying 
作者单位：赖春艳,LAI Chun-yan(上海电力学院能源与环境工程学院,上海,200090)
解晶莹,XIE Jing-ying(上海航天技术研究院811所,上海,200233)
刊 名：电池  ISTIC PKU
英文刊名：BATTERY BIMONTHLY
年，卷(期)：2007 37(5)
分类号：TM912.9
关键词：LiFePO4   正极材料   掺杂   放电比容量 
机标分类号：TM9 TU4
机标关键词：掺杂石结构电化学性能锂离子电池正极材料样品恒电流充放电放电比容量四探针法高温固相放电平台方法研究电导率保持率循环加热橄榄法制
基金项目：上海市教委优秀青年教师资助项目，上海市重点学科建设项目
DOI：

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