中国物理B ›› 2022, Vol. 31 ›› Issue (7): 78101-078101.doi: 10.1088/1674-1056/ac598c

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Probing the improved stability for high nickel cathode via dual-element modification in lithium-ion

Fengling Chen(陈峰岭)1,2, Chaozhi Zeng(曾朝智)3, Chun Huang(黄淳)3,†, Jiannan Lin(林建楠)4, Yifan Chen(陈一帆)4, Binbin Dong(董彬彬)4, Chujun Yin(尹楚君)1,2, Siying Tian(田飔莹)1,2, Dapeng Sun(孙大鹏)1,2, Zhenyu Zhang(张振宇)4,‡, Hong Li(李泓)2,5,§, and Chaobo Li(李超波)1,2,¶   

  1. 1 Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;
    4 Beijing Welion New Energy Technology Co., Ltd, Beijing 102402, China;
    5 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2022-02-08 修回日期:2022-02-23 接受日期:2022-03-02 出版日期:2022-06-09 发布日期:2022-07-19
  • 通讯作者: Chun Huang, Zhenyu Zhang, Hong Li, Chaobo Li E-mail:huangchun@sari.ac.cn;zyzhang@solidstatelion.com;hli@iphy.ac.cn;lichaobo@ime.ac.cn
  • 基金资助:
    Project supported by the Key Laboratory Fund (Grant No. 6142804200303) from Science and Technology on Microsystem Laboratory, the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences:Original Innovation Projects from 0 to 1 (Grant No. ZDBS-LY-JSC010), Beijing Municipal Science & Technology Commission (Grant No. Z191100004719001).

Probing the improved stability for high nickel cathode via dual-element modification in lithium-ion

Fengling Chen(陈峰岭)1,2, Chaozhi Zeng(曾朝智)3, Chun Huang(黄淳)3,†, Jiannan Lin(林建楠)4, Yifan Chen(陈一帆)4, Binbin Dong(董彬彬)4, Chujun Yin(尹楚君)1,2, Siying Tian(田飔莹)1,2, Dapeng Sun(孙大鹏)1,2, Zhenyu Zhang(张振宇)4,‡, Hong Li(李泓)2,5,§, and Chaobo Li(李超波)1,2,¶   

  1. 1 Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;
    4 Beijing Welion New Energy Technology Co., Ltd, Beijing 102402, China;
    5 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2022-02-08 Revised:2022-02-23 Accepted:2022-03-02 Online:2022-06-09 Published:2022-07-19
  • Contact: Chun Huang, Zhenyu Zhang, Hong Li, Chaobo Li E-mail:huangchun@sari.ac.cn;zyzhang@solidstatelion.com;hli@iphy.ac.cn;lichaobo@ime.ac.cn
  • Supported by:
    Project supported by the Key Laboratory Fund (Grant No. 6142804200303) from Science and Technology on Microsystem Laboratory, the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences:Original Innovation Projects from 0 to 1 (Grant No. ZDBS-LY-JSC010), Beijing Municipal Science & Technology Commission (Grant No. Z191100004719001).

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摘要： One of the major hurdles of nickel-rich cathode materials for lithium-ion batteries is the low cycling stability, especially at high temperature and high voltage, originating from severe structural degradation, which makes this class of cathode less practical. Herein, we compared the effect of single and dual ions on electrochemical performance of high nickel (LiNi0.88Mn0.03Co0.09O2, NMC) cathode material in different temperatures and voltage ranges. The addition of a few amounts of tantalum (0.2 wt%) and boron (0.05 wt%) lead to improved electrochemical performance. The co-modified LiNi0.88Mn0.03Co0.09O2 displays an initial discharge capacity of 234.9 mAh/g at 0.1 C and retained 208 mAh/g at 1 C after 100 cycles at 45 ℃, which corresponds to a capacity retention of 88.5%, compared to the initial discharge capacity of 234.1 mAh/g and retained capacity of 200.5 mAh/g (85.6%). The enhanced capacity retention is attributed to the synergetic effect of foreign elements by acting as a surface structural stabilizer without sacrificing specific capacity.

关键词: LiNi0.88Mn0.03Co0.09O2, lithium-ion battery, cathode material, modification

Abstract: One of the major hurdles of nickel-rich cathode materials for lithium-ion batteries is the low cycling stability, especially at high temperature and high voltage, originating from severe structural degradation, which makes this class of cathode less practical. Herein, we compared the effect of single and dual ions on electrochemical performance of high nickel (LiNi0.88Mn0.03Co0.09O2, NMC) cathode material in different temperatures and voltage ranges. The addition of a few amounts of tantalum (0.2 wt%) and boron (0.05 wt%) lead to improved electrochemical performance. The co-modified LiNi0.88Mn0.03Co0.09O2 displays an initial discharge capacity of 234.9 mAh/g at 0.1 C and retained 208 mAh/g at 1 C after 100 cycles at 45 ℃, which corresponds to a capacity retention of 88.5%, compared to the initial discharge capacity of 234.1 mAh/g and retained capacity of 200.5 mAh/g (85.6%). The enhanced capacity retention is attributed to the synergetic effect of foreign elements by acting as a surface structural stabilizer without sacrificing specific capacity.

Key words: LiNi0.88Mn0.03Co0.09O2, lithium-ion battery, cathode material, modification

中图分类号:  (Surface treatments)

  • 81.65.-b
81.40.Np (Fatigue, corrosion fatigue, embrittlement, cracking, fracture, and failure) 81.15.-z (Methods of deposition of films and coatings; film growth and epitaxy) 47.20.Hw (Morphological instability; phase changes)