Enhanced electrochemical performance in lithium ion batteries of a hollow spherical lithium-rich cathode material synthesized by a molten salt method
详细信息 查看全文
- 作者：Xin He (1)
Jun Wang (1)
Richard Kloepsch (1)
Steffen Krueger (1)
Haiping Jia (1)
Haidong Liu (1)
Britta Vortmann (1)
Jie Li (1) - 关键词：Li ; rich cathode ; nano hollow sphere ; molten salt synthesis ; electrochemical performance ; lithium ion batteries
- 刊名：Nano Research
- 出版年：2014
- 出版时间：January 2014
- 年：2014
- 卷：7
- 期：1
- 页码：110-118
- 全文大小：1,386 KB
- 作者单位：Xin He (1)
Jun Wang (1)
Richard Kloepsch (1)
Steffen Krueger (1)
Haiping Jia (1)
Haidong Liu (1)
Britta Vortmann (1)
Jie Li (1)
1. MEET Battery Research Center / Institute of Physical Chemistry, University of Muenster, Corrensstrasse 46, D-48149, Muenster, Germany - ISSN：1998-0000
文摘
A high voltage layered Li1.2Ni0.16Co0.08Mn0.56O2 cathode material with a hollow spherical structure has been synthesized by molten-salt method in a NaCl flux. Characterization by X-ray diffraction and scanning electron microscopy confirmed its structure and proved that the as-prepared powder is constituted of small, homogenously sized hollow spheres (1-.5 μm). The material exhibited enhanced rate capability and high first cycle efficiency due to the good dispersion of secondary particles. Galvanostatic cycling at different temperatures (20, 40, and 60 °C) and a current rate of 2 C (500 mA·g?) showed no significant capacity fade.