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Journal of Electrochemistry ›› 2020, Vol. 26 ›› Issue (1): 73-83.  doi: 10.13208/j.electrochem.181011

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Research Progresses in Ni-Co-Mn/Al Ternary Concentration Gradient Cathode Materials for Li-Ion Batteries

ZHANG Chun-fang1, ZHAO Wen-gao1, ZHENG Shi-yao2, LI Yi-xiao2, GONG Zheng-liang1, ZHANG Zhong-ru2, YANG Yong1,2,*()   

  1. 1. College of Energy, Xiamen University, Xiamen 361102, Fujian, China
    2. State Key Laboratory of Physical Chemistry of Solid Surfaces, Energy Materials Chemistry Collaborative Innovation Center, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
  • Received:2018-10-11 Revised:2019-01-04 Online:2020-02-28 Published:2019-01-15
  • Contact: YANG Yong E-mail:yyang@xmu.edu.cn


Nickel-rich ternary materials with large reversible capacity as well as high operating voltage are considered as the most promising candidate for next generation lithium-ion batteries (LIBs). However, the inferior cycle stability and thermal stability have limited their widely commercial applications. Concentration gradient design of Ni-Co-Mn/Al ternary concentration gradient materials have been extensively studied in the past decade, which can ensure high cycle capacity while maintaining excellent cycle stability. In this paper, the latest research progresses in Ni-Co-Mn/Al ternary concentration gradient materials for LIBs are reviewed. Firstly, we summarize the different synthesis methods of ternary concentration-gradient materials, especially focusing on the research directions towards core-shell concentration gradient (CSCG) materials and full concentration gradient (FCG) ternary materials. In addition, this review also introduces the structural characterizations for concentration gradient ternary materials and reveals the reasons for their performance improvements. Finally, we discuss the current challenges of CSCG and FCG materials in the industrialization and display possible solutions to address them.

Key words: lithium-ion batteries, ternary concentration gradient material, core-shell concentration gradient, full concentration gradient

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