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Creep-type all-solid-state cathode achieving long life

Author

Listed:
  • Xiaolin Xiong

    (Institute of Physics, Chinese Academy of Science
    University of Chinese Academy of Sciences)

  • Ting Lin

    (Institute of Physics, Chinese Academy of Science)

  • Chunxi Tian

    (Institute of Physics, Chinese Academy of Science
    University of Chinese Academy of Sciences)

  • Guoliang Jiang

    (Institute of Physics, Chinese Academy of Science
    University of Chinese Academy of Sciences)

  • Rong Xu

    (Xi’an Jiaotong University)

  • Hong Li

    (Institute of Physics, Chinese Academy of Science)

  • Liquan Chen

    (Institute of Physics, Chinese Academy of Science)

  • Liumin Suo

    (Institute of Physics, Chinese Academy of Science
    University of Chinese Academy of Sciences)

Abstract

Electrochemical-mechanical coupling poses enormous challenges to the interfacial and structural stability but create new opportunities to design innovative all-solid-state batteries from scratch. Relying on the solid-solid constraint in the space-limited domain structure, we propose to exploit the lithiation-induced stress to drive the active materials creep, thereby improving the structural integrity. For demonstration, we fabricate the creep-type all-solid-state cathode using creepable Se material and an all-in-one rigid ionic/electronic conducting Mo6Se8 framework. As indicated by the in-situ experiment and numerical simulation, this cathode presents unique capabilities in improving interparticle contact and avoiding particle fracture, leading to its superior electrochemical performance, including a superior long-cycle life of more than 3000 cycles at 0.5 C and a high volumetric energy density of 2460 Wh/L at the cathode level. We believe this innovative strategy to utilize mechanics to boost the electrochemical performance could shed light on the future design of all-solid-state batteries for practical applications.

Suggested Citation

  • Xiaolin Xiong & Ting Lin & Chunxi Tian & Guoliang Jiang & Rong Xu & Hong Li & Liquan Chen & Liumin Suo, 2024. "Creep-type all-solid-state cathode achieving long life," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48174-8
    DOI: 10.1038/s41467-024-48174-8
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    References listed on IDEAS

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    1. Jürgen Janek & Wolfgang G. Zeier, 2023. "Challenges in speeding up solid-state battery development," Nature Energy, Nature, vol. 8(3), pages 230-240, March.
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