电源技术2017，Vol.41Issue(2)：186-188,201,4.
不同碳源的溶胶-凝胶法制备LiFePO4/C正极材料
Synthesis of LiFePO4/C cathode material by different carbon source assisted sol-gel method
雍厚辉 1郑杰 2韩春霞 1杨文忠1
作者信息
- 1. 南京工业大学理学院,江苏南京211816
- 2. 江苏省特种设备安全监督检验研究院无锡分院,江苏无锡214000
- 折叠
摘要
Abstract
To improve the performance of LiFePO4,LiFePO4/C composite cathode materials were synthesized by sol-gel method using carbon source such as PEG,acetylene black,glycine,glucose respectively.The precursors and the products of LiFePO4/C were characterized by XRD,SEM,thermal analysis and electrochemical performance test.The results show that the LiFePO4/C composite material synthesized using carbon source has a simple pure olive-type phase;compared with pure phase LiFePO4,LiFePO4/C synthesized with glycine has much smaller particle size and superior electrochemical performance;the average particle size of LiFePO4/C material is 1.7 μm and uniform distribution;the initial discharge capacity is achieved to 163.5 mAh/g at 0.2 C.It retains discharge spaecific capacity of 130.1 mAh/g and 112.3 mAh/g at 0.5 C and 1 C after 20 cycles.The sample exhibits good electrochemical performance and high cyclic stability.关键词
碳源/正极材料/溶胶-凝胶法/LiFePO4Key words
carbon source/cathode material/sol-gel method/LiFePO4分类
信息技术与安全科学引用本文复制引用
雍厚辉,郑杰,韩春霞,杨文忠..不同碳源的溶胶-凝胶法制备LiFePO4/C正极材料[J].电源技术,2017,41(2):186-188,201,4.
