Electrospinning synthesis of novel lithium-rich 0.4Li2MnO3·0.6LiNi1/3Co1/3Mn1/3O
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- 作者：Lei-Lei Cui ; Xiao-Wei Miao ; Yu-Feng Song ; Wen-Ying Fang…
- 关键词：Electrospinning ; Cathode ; Nanotube ; Lithium ; rich ; Lithium battery
- 刊名：Advances in Manufacturing
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：4
- 期：1
- 页码：79-88
- 全文大小：1,855 KB
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Xiao-Wei Miao (1)
Yu-Feng Song (1)
Wen-Ying Fang (1)
Hong-Bin Zhao (1) (3)
Jian-Hui Fang (1) (2)
1. Department of Chemistry, Shanghai University, Shanghai, 200444, People’s Republic of China
3. Department of Chemical Engineering, University of Waterloo, Waterloo, N2L3G1, Canada
2. Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai, 200072, People’s Republic of China - 刊物主题：Manufacturing, Machines, Tools; Control, Robotics, Mechatronics; Nanotechnology and Microengineering;
- 出版者：Springer Berlin Heidelberg
- ISSN：2195-3597
文摘
In this study, a lithium-rich layered 0.4Li2MnO3·0.6LiNi1/3Co1/3Mn1/3O2 nanotube cathode synthesized by novel electrospinning is reported, and the effects of temperature on the electrochemical performance and morphologies are investigated. The crystal structure is characterized by X-ray diffraction patterns, and refined by two sets of diffraction data (R-3m and C2/m). Refined crystal structure is 0.4Li2MnO3·0.6LiNi1/3Co1/3Mn1/3O2 composite. The inductively coupled plasma optical emission spectrometer and thermogravimetric and differential scanning calorimetry analysis measurement supply reference to optimize the calcination temperature and heat-treatment time. The morphology is characterized by scanning and high-resolution transmission electron microscope techniques, and the micro-nanostructured hollow tubes of Li-rich 0.4Li2MnO3·0.6LiNi1/3Co1/3Mn1/3O2 composite with outer diameter of 200–400 nm and the wall thickness of 50–80 nm are synthesized successfully. The electrochemical evaluation shows that 0.4Li2MnO3·0.6LiNi1/3Co1/3Mn1/3O2 sintered at 800 °C for 8 h delivers the highest capacity of the first discharge capacity of 267.7 mAh/g between 2.5 V and 4.8 V at 0.1C and remains 183.3 mAh/g after 50 cycles. The electrospinning method with heat-treatment to get micro-nanostructured lithium-rich cathode shows promising application in lithium-ion batteries with stable electrochemical performance and higher C-rate performance for its shorter Li ions transfer channels and stable designed structure.