Advances in Manufacturing ›› 2016, Vol. 4 ›› Issue (1): 79-88.doi: 10.1007/s40436-016-0133-x

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Electrospinning synthesis of novel lithium-rich 0.4Li2MnO3·0.6LiNi1/3Co1/3Mn1/3O2 nanotube and its electrochemical performance as cathode of lithium-ion battery

Lei-Lei Cui1, Xiao-Wei Miao1, Yu-Feng Song1, Wen-Ying Fang1, Hong-Bin Zhao1,3, Jian-Hui Fang1,2   

  1. 1 Department of Chemistry, Shanghai University, Shanghai 200444, People's Republic of China;
    2 Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, People's Republic of China;
    3 Department of Chemical Engineering, University of Waterloo, Waterloo N2L3G1, Canada
  • 收稿日期:2015-02-04 修回日期:2016-01-08 出版日期:2016-03-25 发布日期:2016-01-29
  • 通讯作者: Jian-Hui Fang E-mail:jhfang@shu.edu.cn
  • 基金资助:

    The project is funded by the 085 Project of Shanghai Education Commission, Science and Technology Commission of Shanghai Municipality (Grant No. 15ZR1415100), the China Scholarship Council (Grant No. 201406895017) and Shanghai University International Cooperation and Exchange Fund.

Electrospinning synthesis of novel lithium-rich 0.4Li2MnO3·0.6LiNi1/3Co1/3Mn1/3O2 nanotube and its electrochemical performance as cathode of lithium-ion battery

Lei-Lei Cui1, Xiao-Wei Miao1, Yu-Feng Song1, Wen-Ying Fang1, Hong-Bin Zhao1,3, Jian-Hui Fang1,2   

  1. 1 Department of Chemistry, Shanghai University, Shanghai 200444, People's Republic of China;
    2 Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, People's Republic of China;
    3 Department of Chemical Engineering, University of Waterloo, Waterloo N2L3G1, Canada
  • Received:2015-02-04 Revised:2016-01-08 Online:2016-03-25 Published:2016-01-29
  • Contact: Jian-Hui Fang E-mail:jhfang@shu.edu.cn
  • Supported by:

    The project is funded by the 085 Project of Shanghai Education Commission, Science and Technology Commission of Shanghai Municipality (Grant No. 15ZR1415100), the China Scholarship Council (Grant No. 201406895017) and Shanghai University International Cooperation and Exchange Fund.

摘要: 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 highresolution 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 ℃ 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.

关键词: Electrospinning, Cathode, Nanotube, Lithium-rich, Lithium battery

Abstract: 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 highresolution 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 ℃ 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.

Key words: Electrospinning, Cathode, Nanotube, Lithium-rich, Lithium battery