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《Journal of Shanghai University of Electric Power》 2010-01
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Preparation of LiFe_(1-x)Mg_xPO_4/C Cathode Material by Rheological Phase Method

LAI Chun-yan,LI Hui,LI Wei-ping(School of Thermal Power and Environmental Engineering,Shanghai University of Electric Power,Shanghai 200090,China)  
Mg-doped and the rheological phase method are applied to improve the electrochemical performances of LiFePO4.The effect of different doping content and different preparation method on the properties of LiFePO4 are studied.The effect of temperature and content of Mg doping on the structure and chemical performance of LiFePO4 are researched.The results of SEM,XRD and electrochemical performances indicate that Mg doping can improve the electrochemical performance obviously,the discharge capacity of LiFe1-xMgxPO4 with 5% Mg doping is 140.7 mAh/g in 0.1 C.The electrochemical performance can improve more if the LiFe1-x MgxPO4 material is prepared by rheological phase method,with the discharge capacity reaching 147.5 mAh/g at 0.1 C.
【Fund】: 上海市自然科学基金(07ZR14042);; 上海市教委优秀青年教师资助项目(B01672)
【CateGory Index】: TM912.9
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