能源化学(英文版)

能源化学(英文) ›› 2018, Vol. 27 ›› Issue (6): 1655-1660.DOI: 10.1016/j.jechem.2018.06.007

• Review • 上一篇    下一篇

In situ X-ray diffraction and thermal analysis of LiNi0.8Co0.15Al0.05O2 synthesized via co-precipitation method

Na Zhanga, Xiaoyu Zhanga, Erbo Shic, Shiyong Zhaoc, Kezhu Jianga, Di Wanga, Pengfei Wanga, Shaohua Guoa, Ping Hea, Haoshen Zhoua,b   

  1. a Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, and Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, Jiangsu, China;
    b National Institute of Advanced Industrial Science and Technology(AIST), Umezono, 1-1-1, Tsukuba 305-8568, Japan;
    c Zhangjiagang Guotai Huarong New Chemical Material Co., Ltd, Suzhou 215634, Jiangsu, China
  • 收稿日期:2018-04-16 修回日期:2018-06-13 出版日期:2018-11-15 发布日期:2018-10-12
  • 通讯作者: Ping He, Haoshen Zhou
  • 基金资助:

    This research was partially supported by the National Key Research and Development Program of China (2016YFB0100203), the National Natural Science Foundation of China (21673116,21633003), the Natural Science Foundation of Jiangsu Province of China (BK20160068), PAPD of Jiangsu Higher Education Institutions.

In situ X-ray diffraction and thermal analysis of LiNi0.8Co0.15Al0.05O2 synthesized via co-precipitation method

Na Zhanga, Xiaoyu Zhanga, Erbo Shic, Shiyong Zhaoc, Kezhu Jianga, Di Wanga, Pengfei Wanga, Shaohua Guoa, Ping Hea, Haoshen Zhoua,b   

  1. a Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, and Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, Jiangsu, China;
    b National Institute of Advanced Industrial Science and Technology(AIST), Umezono, 1-1-1, Tsukuba 305-8568, Japan;
    c Zhangjiagang Guotai Huarong New Chemical Material Co., Ltd, Suzhou 215634, Jiangsu, China
  • Received:2018-04-16 Revised:2018-06-13 Online:2018-11-15 Published:2018-10-12
  • Contact: Ping He, Haoshen Zhou
  • Supported by:

    This research was partially supported by the National Key Research and Development Program of China (2016YFB0100203), the National Natural Science Foundation of China (21673116,21633003), the Natural Science Foundation of Jiangsu Province of China (BK20160068), PAPD of Jiangsu Higher Education Institutions.

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摘要： LiNi0.8Co0.15Al0.05O2 (NCA) material is successfully synthesized with a modified co-precipitation method, in which NH3·H2O and EDTA are used as two chelating agents. The obtained LiNi0.8Co0.15Al0.05O2 material has well-defined layered structure and uniform element distribution, which reveals an enhanced electrochemical performance with a capacity retention of 97.9% after 100 cycles at 0.2 C, and reduced thermal runaway from the isothermal calorimetry test. In situ X-ray diffraction (XRD) was employed to capture the structural changes during the charge-discharge process. The reversible evolutions of lattice parameters (a, b, c, and V) further verify the structural stability.

关键词: LiNi0.8Co0.15Al0.05O2, Co-precipitation, Isothermal calorimetry, In situ X-ray diffraction

Abstract: LiNi0.8Co0.15Al0.05O2 (NCA) material is successfully synthesized with a modified co-precipitation method, in which NH3·H2O and EDTA are used as two chelating agents. The obtained LiNi0.8Co0.15Al0.05O2 material has well-defined layered structure and uniform element distribution, which reveals an enhanced electrochemical performance with a capacity retention of 97.9% after 100 cycles at 0.2 C, and reduced thermal runaway from the isothermal calorimetry test. In situ X-ray diffraction (XRD) was employed to capture the structural changes during the charge-discharge process. The reversible evolutions of lattice parameters (a, b, c, and V) further verify the structural stability.

Key words: LiNi0.8Co0.15Al0.05O2, Co-precipitation, Isothermal calorimetry, In situ X-ray diffraction