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Aqueous alternating electrolysis prolongs electrode lifespans under harsh operation conditions

Author

Listed:
  • Jie Liang

    (Shandong Normal University
    University of Electronic Science and Technology of China)

  • Jun Li

    (University of Electronic Science and Technology of China)

  • Hongliang Dong

    (Center for High Pressure Science and Technology Advanced Research)

  • Zixiaozi Li

    (University of Electronic Science and Technology of China)

  • Xun He

    (University of Electronic Science and Technology of China)

  • Yan Wang

    (University of Electronic Science and Technology of China)

  • Yongchao Yao

    (University of Electronic Science and Technology of China)

  • Yuchun Ren

    (University of Electronic Science and Technology of China)

  • Shengjun Sun

    (Shandong Normal University)

  • Yongsong Luo

    (Shandong Normal University)

  • Dongdong Zheng

    (Shandong Normal University)

  • Jiong Li

    (Chinese Academy of Sciences)

  • Qian Liu

    (Chengdu University)

  • Fengming Luo

    (Sichuan University)

  • Tongwei Wu

    (University of Electronic Science and Technology of China)

  • Guang Chen

    (Shaanxi University of Science & Technology)

  • Xuping Sun

    (Shandong Normal University
    University of Electronic Science and Technology of China
    Sichuan University)

  • Bo Tang

    (Shandong Normal University
    Laoshan Laboratory)

Abstract

It is vital to explore effective ways for prolonging electrode lifespans under harsh electrolysis conditions, such as high current densities, acid environment, and impure water source. Here we report alternating electrolysis approaches that realize promptly and regularly repair/maintenance and concurrent bubble evolution. Electrode lifespans are improved by co-action of Fe group elemental ions and alkali metal cations, especially a unique Co2+-Na+ combo. A commercial Ni foam sustains ampere-level current densities alternatingly during continuous electrolysis for 93.8 h in an acidic solution, whereas such a Ni foam is completely dissolved in ~2 h for conventional electrolysis conditions. The work not only explores an alternating electrolysis-based system, alkali metal cation-based catalytic systems, and alkali metal cation-based electrodeposition techniques, and beyond, but demonstrates the possibility of prolonged electrolysis by repeated deposition-dissolution processes. With enough adjustable experimental variables, the upper improvement limit in the electrode lifespan would be high.

Suggested Citation

  • Jie Liang & Jun Li & Hongliang Dong & Zixiaozi Li & Xun He & Yan Wang & Yongchao Yao & Yuchun Ren & Shengjun Sun & Yongsong Luo & Dongdong Zheng & Jiong Li & Qian Liu & Fengming Luo & Tongwei Wu & Gua, 2024. "Aqueous alternating electrolysis prolongs electrode lifespans under harsh operation conditions," Nature Communications, Nature, vol. 15(1), pages 1-15, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50519-2
    DOI: 10.1038/s41467-024-50519-2
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    References listed on IDEAS

    as
    1. Stanford R. Ovshinsky, 2000. "The road to decarbonized energy," Nature, Nature, vol. 406(6795), pages 457-458, August.
    2. Christiana Figueres & Corinne Le Quéré & Anand Mahindra & Oliver Bäte & Gail Whiteman & Glen Peters & Dabo Guan, 2018. "Emissions are still rising: ramp up the cuts," Nature, Nature, vol. 564(7734), pages 27-30, December.
    3. repec:cdl:itsdav:qt7qv6q35r is not listed on IDEAS
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