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Hard-carbon-stabilized Li–Si anodes for high-performance all-solid-state Li-ion batteries

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  • Wenlin Yan

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Zhenliang Mu

    (ByteDance Research)

  • Zhixuan Wang

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences)

  • Yuli Huang

    (Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Dengxu Wu

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Pushun Lu

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Jiaze Lu

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Jieru Xu

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yujing Wu

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Tenghuan Ma

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    University of Science and Technology of China)

  • Ming Yang

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    University of Science and Technology of China)

  • Xiang Zhu

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    University of Science and Technology of China)

  • Yu Xia

    (ByteDance Research)

  • Shaochen Shi

    (ByteDance Research)

  • Liquan Chen

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    University of Science and Technology of China)

  • Hong Li

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    University of Science and Technology of China)

  • Fan Wu

    (Tianmu Lake Institute of Advanced Energy Storage Technologies
    Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    University of Science and Technology of China)

Abstract

All-solid-state batteries (ASSBs) with Li metal anodes or Si anodes are promising candidates to achieve high energy density and improved safety, but they suffer from undesirable lithium dendrite growth or huge volume expansion, respectively. Here we synthesize a hard-carbon-stabilized Li–Si alloy anode in which sintering of Si leads to the transformation of micro-metre particles into dense continuum. A 3D ionic-electronic-conductive network composed of plastically deformable Li-rich phases (Li15Si4 and LiC6) that enlarges active area and relieves stress concentration is created in the anode, leading to improved electrode kinetics and mechanical stability. With the hard-carbon-stabilized Li-Si anode, full cells using LiCoO2 or LiNi0.8Co0.1Mn0.1O2 cathodes and Li6PS5Cl electrolyte achieve favourable rate capability and cycle stability. In particular, the ASSB with LiNi0.8Co0.1Mn0.1O2 at high loading of 5.86 mAh cm−2 delivers 5,000 cycles at 1 C (5.86 mA cm−2), demonstrating the potential of using hard-carbon-stabilized Li–Si alloy anodes for practical applications of ASSBs.

Suggested Citation

  • Wenlin Yan & Zhenliang Mu & Zhixuan Wang & Yuli Huang & Dengxu Wu & Pushun Lu & Jiaze Lu & Jieru Xu & Yujing Wu & Tenghuan Ma & Ming Yang & Xiang Zhu & Yu Xia & Shaochen Shi & Liquan Chen & Hong Li & , 2023. "Hard-carbon-stabilized Li–Si anodes for high-performance all-solid-state Li-ion batteries," Nature Energy, Nature, vol. 8(8), pages 800-813, August.
    • Handle: RePEc:nat:natene:v:8:y:2023:i:8:d:10.1038_s41560-023-01279-8
    DOI: 10.1038/s41560-023-01279-8
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    Cited by:

    1. Chanho Kim & Gyutae Nam & Yoojin Ahn & Xueyu Hu & Meilin Liu, 2024. "Nb1.60Ti0.32W0.08O5−δ as negative electrode active material for durable and fast-charging all-solid-state Li-ion batteries," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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