电源技术2012，Vol.36Issue(12)：1790-1792,3.
锂离子电池正极材料Li3V2(PO4)3/C的制备及性能
Synthesis and properties of Li3V2(PO4)3/C cathode materials for lithium-ion batteries
曾庆红 1姬磊1
作者信息
- 1. 东北石油大学化学化工学院,黑龙江大庆163318
- 折叠
摘要
Abstract
Li3V2 (PO4)3/C were successfully synthesized by a sol-gel method. The structure and morphology of the materials were characterized by XRD and TEM. The results show that the composites were composed of monoclinic Li3V2 (PO4)3 and carbon materials. The carbon materials, coating on the surface of Li3V2 (PO4)3, could obviously improve the electrinic conductivity of the composites. Galvanostatic charge/discharge, CV and EIS measurements show that the composites prepared at 800 electrinic for 8 h present the best electrochemical performance, especially rate and cycling performance. The initial discharge specific capacities at 1 C and 10 C are 128.2 and 118.4 mAh/g, respectively. After 100 cycles, the capacity retention is 97.0% and 96.1%, and the coulombic efficiency is nearly 100%. Even at the high rate of 20 C, the initial discharge specific capacity of the composites can reach 114.9 mAh/g.关键词
锂离子电池/正极材料/Li3V2(PO4)3/溶胶-凝胶法Key words
lithium-ion batteries/ cathode material/ Li3V2(PO4)3/ sol-gel method分类
信息技术与安全科学引用本文复制引用
曾庆红,姬磊..锂离子电池正极材料Li3V2(PO4)3/C的制备及性能[J].电源技术,2012,36(12):1790-1792,3.
