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Enhancement of electrocatalysis through magnetic field effects on mass transport

Author

Listed:
  • Priscila Vensaus

    (École Polytechnique Fédérale de Lausanne (EPFL)
    École Polytechnique Fédérale de Lausanne (EPFL)
    Escuela de Bio y Nanotecnologías, Universidad Nacional de San Martín, San Martín)

  • Yunchang Liang

    (École Polytechnique Fédérale de Lausanne (EPFL)
    École Polytechnique Fédérale de Lausanne (EPFL))

  • Jean-Philippe Ansermet

    (École Polytechnique Fédérale de Lausanne (EPFL))

  • Galo J. A. A. Soler-Illia

    (Escuela de Bio y Nanotecnologías, Universidad Nacional de San Martín, San Martín)

  • Magalí Lingenfelder

    (École Polytechnique Fédérale de Lausanne (EPFL)
    École Polytechnique Fédérale de Lausanne (EPFL))

Abstract

Magnetic field effects on electrocatalysis have recently gained attention due to the substantial enhancement of the oxygen evolution reaction (OER) on ferromagnetic catalysts. When detecting an enhanced catalytic activity, the effect of magnetic fields on mass transport must be assessed. In this study, we employ a specifically designed magneto-electrochemical system and non-magnetic electrodes to quantify magnetic field effects. Our findings reveal a marginal enhancement in reactions with high reactant availability, such as the OER, whereas substantial boosts exceeding 50% are observed in diffusion limited reactions, exemplified by the oxygen reduction reaction (ORR). Direct visualization and quantification of the whirling motion of ions under a magnetic field underscore the importance of Lorentz forces acting on the electrolyte ions, and demonstrate that bubbles’ movement is a secondary phenomenon. Our results advance the fundamental understanding of magnetic fields in electrocatalysis and unveil new prospects for developing more efficient and sustainable energy conversion technologies.

Suggested Citation

  • Priscila Vensaus & Yunchang Liang & Jean-Philippe Ansermet & Galo J. A. A. Soler-Illia & Magalí Lingenfelder, 2024. "Enhancement of electrocatalysis through magnetic field effects on mass transport," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-46980-8
    DOI: 10.1038/s41467-024-46980-8
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    References listed on IDEAS

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    1. Felipe A. Garcés-Pineda & Marta Blasco-Ahicart & David Nieto-Castro & Núria López & José Ramón Galán-Mascarós, 2019. "Direct magnetic enhancement of electrocatalytic water oxidation in alkaline media," Nature Energy, Nature, vol. 4(6), pages 519-525, June.
    2. Yunchang Liang & Karla Banjac & Kévin Martin & Nicolas Zigon & Seunghwa Lee & Nicolas Vanthuyne & Felipe Andrés Garcés-Pineda & José R. Galán-Mascarós & Xile Hu & Narcis Avarvari & Magalí Lingenfelder, 2022. "Enhancement of electrocatalytic oxygen evolution by chiral molecular functionalization of hybrid 2D electrodes," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    3. Tianze Wu & Xiao Ren & Yuanmiao Sun & Shengnan Sun & Guoyu Xian & Günther G. Scherer & Adrian C. Fisher & Daniel Mandler & Joel W. Ager & Alexis Grimaud & Junling Wang & Chengmin Shen & Haitao Yang & , 2021. "Spin pinning effect to reconstructed oxyhydroxide layer on ferromagnetic oxides for enhanced water oxidation," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    4. Darband, Ghasem Barati & Aliofkhazraei, Mahmood & Shanmugam, Sangaraju, 2019. "Recent advances in methods and technologies for enhancing bubble detachment during electrochemical water splitting," Renewable and Sustainable Energy Reviews, Elsevier, vol. 114(C), pages 1-1.
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