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JOURNAL OF SYNTHETIC CRYSTALS ›› 2023, Vol. 52 ›› Issue (6): 1086-1099.

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Research Progress of 3D Collector for Lithium Metal Battery

YU Lei1, WANG Ruijuan2, TIAN Li3, YANG Li2,3   

  1. 1. Dongguan Dongyangpung Researh and Develpment Co., Ltd., Dongguan 523000, China;
    2. College of Chemistry, Xiangtan University, Xiangtan 411105, China;
    3. School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
  • Received:2022-12-19 Online:2023-06-15 Published:2023-06-30

Abstract: Owing to its high mass specific capacity and low electrode potential, lithium metal is expected to become one of the most potential anode materials for the new generation of high-energy battery systems. However, the uncontrolled growth of lithium dendrites, formation of dead lithium, and volume expansion during the cycling process not only reduce the stability in the process of cell cycle, but also cause potential safety hazard, severely restrict the practical application of the lithium metal anode. 3D current collectors play important roles in mitigating/inhibiting the volume change of lithium metal anode, delaying the growth of lithium dendrite, reducing the local current density and improving the Coulomb efficiency. However, in the actual process, the performance of the primitive one is not ideal and further modification is needed. Based on surface modification (surface coating, surface doping, surface chemical treatment) and gradient design, the research progress of 3D current collector in lithium metal battery is reviewed in this paper. The influences of lithium ion on the performance of lithium metal battery are analyzed in detail. Finally, a summary and prospect are given.

Key words: lithium metal battery, 3D collector, surface modification, gradient design, doping

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