Preparation and Electrochemical Properties of Coral-like Li2FeSiO4/C Cathode Material by Two-Step Precipitation Method
详细信息 查看全文
- 作者：Yinglin Yan ; Bing Ren ; Yunhua Xu ; Juan Wang ; Rong Yang…
- 关键词：Lithium ; ion battery ; Li2FeSO4 ; two ; step precipitation method ; Super P
- 刊名：Journal of Electronic Materials
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：45
- 期：10
- 页码：4943-4951
- 全文大小：1,892 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Optical and Electronic Materials
Characterization and Evaluation Materials
Electronics, Microelectronics and Instrumentation
Solid State Physics and Spectroscopy - 出版者：Springer Boston
- ISSN：1543-186X
- 卷排序：45
文摘
Lithium iron silicate (Li2FeSiO4) cathode materials have been synthesized by a soft chemical method combined with spray drying, being both simple and economical. Super P, as a new kind of nanoscale carbon black, was added in the synthesis process. The phase and microstructure of the samples were characterized by x-ray diffraction analysis, scanning electron microscopy, and transmission electron microscopy. The results show that the obtained Li2FeSiO4 possessed coral-like morphology with size range from 250 nm to 450 nm. Super P was decorated on the surface of the Li2FeSiO4 particles. Furthermore, the electrochemical properties of the products were tested, indicating that the as-obtained Li2FeSiO4/C composite presented high specific discharge capacities and stable cycling performance, which can be attributed to the coral-like morphology and Super P coating.