Preparation and Electrochemical Performance of LiFePO4/C Composite

被引：0

作者：

Fan, Junqin ^{[1
]}

Yu, Jianguo ^{[1
]}

Zhao, Yongnan ^{[2
,3
]}

Liu, Chaoyang ^{[1
]}

Sheng, Guoqing ^{[1
]}

Wu, Jiao ^{[1
]}

机构：

[1] Tianjin Polytech Univ, Sch Environm & Chem Engn, Tianjin 300387, Peoples R China

[2] Sch Mat Sci & Engn, Tianjin 300387, Peoples R China

[3] Tianjin Key Lab Fiber, Tianjin 300387, Peoples R China

来源：

ENERGY AND POWER TECHNOLOGY, PTS 1 AND 2 | 2013年 / 805-806卷

关键词：

LiFePO4/C composites; starch; rate capability; CATHODE MATERIALS; LITHIUM; BATTERIES; POLYMER;

D O I：

10.4028/www.scientific.net/AMR.805-806.1265

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

LiFePO4/C composites were synthesized by pyrolyzation of starch gel containing FeC2O4, Li2CO3 and NH4H2PO4. The crystalline structures, micro-morphologies and electrochemical performances of LiFePO4/C composites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and galvanostatic charge-discharge, respectively. The results indicated that the LiFePO4 nanoparticles showed the homogeneous particle size distribution and were bound together by carbon network when carbon content was 3.9w1%. Moreover, this sample exhibited the highest initial discharge capacity of 154.8 mAh.g(-1) at 0.15 C rate, excellent cyclic ability and rate capability about 99.6 mAh.g(-1) applied 5 C rate in the 20th cycle at room temperature.

引用

页码：1265 / +

页数：2

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