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Ultrahigh loading dry-process for solvent-free lithium-ion battery electrode fabrication

Author

Listed:
  • Minje Ryu

    (Yonsei University)

  • Young-Kuk Hong

    (Yonsei University)

  • Sang-Young Lee

    (Yonsei University)

  • Jong Hyeok Park

    (Yonsei University)

Abstract

The current lithium-ion battery (LIB) electrode fabrication process relies heavily on the wet coating process, which uses the environmentally harmful and toxic N-methyl-2-pyrrolidone (NMP) solvent. In addition to being unsustainable, the use of this expensive organic solvent substantially increases the cost of battery production, as it needs to be dried and recycled throughout the manufacturing process. Herein, we report an industrially viable and sustainable dry press-coating process that uses the combination of multiwalled carbon nanotubes (MWNTs) and polyvinylidene fluoride (PVDF) as a dry powder composite and etched Al foil as a current collector. Notably, the mechanical strength and performance of the fabricated LiNi0.7Co0.1Mn0.2O2 (NCM712) dry press-coated electrodes (DPCEs) far exceed those of conventional slurry-coated electrodes (SCEs) and give rise to high loading (100 mg cm−2, 17.6 mAh cm−2) with impressive specific energy and volumetric energy density of 360 Wh kg−1 and 701 Wh L−1, respectively.

Suggested Citation

  • Minje Ryu & Young-Kuk Hong & Sang-Young Lee & Jong Hyeok Park, 2023. "Ultrahigh loading dry-process for solvent-free lithium-ion battery electrode fabrication," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37009-7
    DOI: 10.1038/s41467-023-37009-7
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    References listed on IDEAS

    as
    1. Wangda Li & Andrei Dolocan & Pilgun Oh & Hugo Celio & Suhyeon Park & Jaephil Cho & Arumugam Manthiram, 2017. "Dynamic behaviour of interphases and its implication on high-energy-density cathode materials in lithium-ion batteries," Nature Communications, Nature, vol. 8(1), pages 1-10, April.
    2. Cun Wang & Lidan Xing & Jenel Vatamanu & Zhi Chen & Guangyuan Lan & Weishan Li & Kang Xu, 2019. "Overlooked electrolyte destabilization by manganese (II) in lithium-ion batteries," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    3. Blake Shaffer & Maximilian Auffhammer & Constantine Samaras, 2021. "Make electric vehicles lighter to maximize climate and safety benefits," Nature, Nature, vol. 598(7880), pages 254-256, October.
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