电池2009，Vol.39Issue(5)：243-246,4.
Sr~(2+)掺杂对LiFePO_4电化学性能的影响
Effects of Sr~(2+)doping on the electrochemical performance of LiFePO_4
摘要
Abstract
The effects of Sr~(2+) doping on the structure, morphology and electrochemical performance of cathode material LiFePO_4 were studied by XRD, ICP,SEM and electrochemical method. Doping Sr~(2+) with proper amount would not change the olivine structure of LiFePO_4, could increase conductivity and restrain the polarization during charge-discharge. The initial specific dis-charge capacity of LiSr_(0.012)Fe_(0.988)PO_4/C at room temperature was 142 mAh/g when cycled at 0.2 C,the specific capacity had no fading after 50 cycles. When cycled at 3.0 C,LiSr_(0.012)Fe_(0.988)PO_4/C still had higher specific capacity and fine cycle performance. The specific capacity of LiSr_(0.012)Fe_(0.988)PO_4/C at the 60th cycle was 147 mAh/g when cycled at 0.5 C at 60℃.关键词
锂离子电池/LiFePO_4/掺杂/电化学性能Key words
Li-ion battery/LiFePO_4/doping/electrochemical performance分类
信息技术与安全科学引用本文复制引用
许明,鲁道荣,谷芝元..Sr~(2+)掺杂对LiFePO_4电化学性能的影响[J].电池,2009,39(5):243-246,4.基金项目
安徽省教育厅自然科学研究项目(050601D2) （050601D2）
