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Mechanistic Exploration of Dendrite Growth and Inhibition for Lithium Metal Batteries

Author

Listed:
  • Yuanliang Chen

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China)

  • Xingping Yuan

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China)

  • Cuiping He

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China)

  • Qingyi Gou

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China)

  • Ni Yang

    (Kunming Metallurgical Research Institute Co., Ltd., Kunming 650093, China)

  • Gang Xie

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China)

  • Keyu Zhang

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China)

  • Yaochun Yao

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China)

  • Yanqing Hou

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China)

Abstract

Li metal has been considered an ideal anode in lithium batteries due to its high theoretical capacity of 3860 mAh·g −1 and lowest negative reduction potential of −3.040 V among the standard hydrogen electrodes. However, lithium dendrites can easily grow on the surface of the negative electrode during charging, which results in a short circuit of the battery and reduces its efficiency. This paper investigated dendrite growth and inhibition mechanisms in lithium metal batteries to improve battery life. The impacts of the initial nucleation spacing, surface energy anisotropy strength, and interfacial electrochemical driving force on lithium dendrite growth were analyzed with electrochemical experiments and mathematical models. The results showed that the smaller nucleation spacing inhibits the growth of dendrite side branches and reduces the roughness of lithium metal deposition on the negative electrode. A lower interfacial energy anisotropy strength can slow down the growth of dendrite tips and improve the dendrite growth structure. The growth of the dendrites is influenced by the interfacial electrochemical driving force. Reducing the nucleation overpotential can effectively inhibit the growth of lithium dendrites.

Suggested Citation

  • Yuanliang Chen & Xingping Yuan & Cuiping He & Qingyi Gou & Ni Yang & Gang Xie & Keyu Zhang & Yaochun Yao & Yanqing Hou, 2023. "Mechanistic Exploration of Dendrite Growth and Inhibition for Lithium Metal Batteries," Energies, MDPI, vol. 16(9), pages 1-18, April.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:9:p:3745-:d:1134459
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    References listed on IDEAS

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    1. A. Basile & A. I. Bhatt & A. P. O’Mullane, 2016. "Stabilizing lithium metal using ionic liquids for long-lived batteries," Nature Communications, Nature, vol. 7(1), pages 1-11, September.
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