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Building electrode skins for ultra-stable potassium metal batteries

Author

Listed:
  • Hongbo Ding

    (Hunan University)

  • Jue Wang

    (Central South University)

  • Jiang Zhou

    (Central South University)

  • Chengxin Wang

    (Sun Yat-sen (Zhongshan) University)

  • Bingan Lu

    (Hunan University)

Abstract

In nature, the human body is a perfect self-organizing and self-repairing system, with the skin protecting the internal organs and tissues from external damages. In this work, inspired by the human skin, we design a metal electrode skin (MES) to protect the metal interface. MES can increase the flatness of electrode and uniform the electric field distribution, inhibiting the growth of dendrites. In detail, an artificial film made of fluorinated graphene oxide serves as the first protection layer. At molecular level, fluorine is released and in-situ formed a robust SEI as the second protection “skin” for metal anode. As a result, Cu@MES | | K asymmetric cell is able to achieve an unprecedented cycle life (over 1600 cycles). More impressively, the full cell of K@MES | | Prussian blue exhibits a long cycle lifespan over 5000 cycles. This work illustrates a mechanism for metal electrode protection and provides a strategy for the applying bionics in batteries.

Suggested Citation

  • Hongbo Ding & Jue Wang & Jiang Zhou & Chengxin Wang & Bingan Lu, 2023. "Building electrode skins for ultra-stable potassium metal batteries," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38065-9
    DOI: 10.1038/s41467-023-38065-9
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    References listed on IDEAS

    as
    1. Zongjie Sun & Kai Xi & Jing Chen & Amor Abdelkader & Meng-Yang Li & Yuanyuan Qin & Yue Lin & Qiu Jiang & Ya-Qiong Su & R. Vasant Kumar & Shujiang Ding, 2022. "Expanding the active charge carriers of polymer electrolytes in lithium-based batteries using an anion-hosting cathode," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    2. Siwu Li & Haolin Zhu & Yuan Liu & Zhilong Han & Linfeng Peng & Shuping Li & Chuang Yu & Shijie Cheng & Jia Xie, 2022. "Codoped porous carbon nanofibres as a potassium metal host for nonaqueous K-ion batteries," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    3. Yang Xu & Chenglin Zhang & Min Zhou & Qun Fu & Chengxi Zhao & Minghong Wu & Yong Lei, 2018. "Highly nitrogen doped carbon nanofibers with superior rate capability and cyclability for potassium ion batteries," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
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