中山大学学报（自然科学版）2009，Vol.48Issue(z2)：161-163,3.
镁离子掺杂对LiFePO4/C复合正极材料性能的影响
Influence of Mg2+ Doping on the Performance of LiFePO4/C Composite Cathode Material
摘要
Abstract
To improve the performance of LiFePO4, single phase LiFe1-xMgx PO4/C (x=0, 0.01, 0.02, 0.03, 0.04) cathodes were synthesized by two-step solid-state method. The samples were characterized by X-ray diffraction ( XRD)、 scanning electron mi-crescopy (SEM) and charge-discharge test. The results indicate that the prepared samples have ordered olivine structure and doping of the low concentration Mg2+ does not affect the structure of the samples. The electrochemical capabilities evaluated by charge-discharge test show that the sample with 2% (molar fraction) Mg2+ has good electrochemical performance delivering about an initial specific ca-pacity of 149.32 mAh/g at 0.2 C-rate. And after 50 cycles, its retains 138.37 mAh/g.关键词
LiFePO4/复合正极材料/碳包覆/Me2+掺杂Key words
LiFePO4/composite cathode material/carbon coating/Mg2+ doping分类
信息技术与安全科学引用本文复制引用
于逢婕,姚耀春,胡成林,杨斌..镁离子掺杂对LiFePO4/C复合正极材料性能的影响[J].中山大学学报（自然科学版）,2009,48(z2):161-163,3.基金项目
昆明理工大学人才引进基金资助项目(051081) （051081）
