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《Journal of South China University of Technology(Natural Science Edition)》 2016-06
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Preparation and Battery Performance of Spherical LiFePO_4/C Doped with Mg~(2+)

YANG Wei;XUE Jian-jun;CHEN Sheng-zhou;HU Xin-fa;XIA Xin-de;LIN Wei-ming;School of Chemistry and Chemical Engineering,South China University of Technology;Guangzhou Great Power Energy & Technology Co.,Ltd.;School of Chemistry and Chemical Engineering,Guangzhou University;  
Spherical Li Fe PO4/ C doped with Mg~(2+)( namely Li MgxFe1- xPO_4/ C) was prepared by means of the spray drying-carbonthermal reduction,with citric acid,ferrous oxalate and magnesium acetate as the carbon source,the iron source and the magnesium source,respectively. Then,the effects of Mg~(2+)doping on the structure and electrochemical performance of the prepared Li Fe PO_4/ C material were investigated. The results indicate that( 1) Li MgxFe1- xPO4/ C possesses a hollow ball-shaped structure and a high specific capacity;( 2) the crystal structure of lithium iron phosphate keeps unchanged at a low Mg~(2+)dosage; and( 3) Li Mg0. 04Fe0. 96PO4/ C possesses the best charge / discharge performance. For instance,its initial discharge capacities are 149. 0,145. 6,141. 3,132. 6and 123. 3 m Ah / g at the rates of 0. 2C,0. 5C,1. 0C,2. 0C and 5. 0 C,respectively; and the capacity retention ratio of Li Mg0. 04Fe0. 96PO4/ C at 1. 0C keeps more than 97. 3% after 100 charge-discharge cycles.
【Fund】: 国家自然科学基金资助项目(21376056;21463030);; 广东省战略性新兴产业发展专项资金新能源汽车产学研项目(2011-1579)~~
【CateGory Index】: TB33;TM912
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【Citations】
Chinese Journal Full-text Database 3 Hits
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 Lin Juan;Patent Examination Cooperation Center of the Patent Office,SIPO;;Research Progress on Modification of LiFeO_4 as Cathode Material for Lithium Ion Battery[J];广东化工;2016-11
2 YANG Wei;XUE Jian-jun;CHEN Sheng-zhou;HU Xin-fa;XIA Xin-de;LIN Wei-ming;School of Chemistry and Chemical Engineering,South China University of Technology;Guangzhou Great Power Energy & Technology Co.,Ltd.;School of Chemistry and Chemical Engineering,Guangzhou University;;Preparation and Battery Performance of Spherical LiFePO_4/C Doped with Mg~(2+)[J];华南理工大学学报(自然科学版);2016-06
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7 DU Jiang;ZHANG Zheng-fu;PENG Jin-hui;ZHU Xin-kun;WANG Jie-xiang;Faculty of Materials Science and Engineering, Kunming University of Science and Technology;National Local Joint Engineering Laboratory of Engineering Applications of Microwave Energy and Equipment Technology;Key Laboratory of Unconventional Metallurgy, Ministry of education, Kunming University of Science and Technology;;Research progress on nano mesoporous materials in lithium ion battery cathode material[J];电源技术;2014-11
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