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Water electrolysis

Durable MnO2 electrocatalysts by stronger Mn–O bonds

Nature Catalysis volume 7, pages 227–228 (2024)Cite this article

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The lack of stability of critical raw material-free electrocatalysts during the oxygen evolution reaction in acidic electrolytes lies beneath the use of Ir-based electrocatalysts in polymeric water electrolysis. Here, a strategy to enhance γ-MnO2 stability in acid is proposed. Theoretical and spectroscopic approaches reveal that increasing the fraction of O atoms in the appropriate position, namely Opla, prevents Mn dissolution during water electrolysis.

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Fig. 1: Identification of Mn–O architecture and repercussion for PEMWE performance.

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  1. Grupo de Energía y Química Sostenibles, Instituto de Catálisis y Petroleoquímica, CSIC, Madrid, Spain

    Sergio Rojas

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  1. Sergio Rojas
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Correspondence to Sergio Rojas.

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The author declares no competing interests.

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Rojas, S. Durable MnO2 electrocatalysts by stronger Mn–O bonds. Nat Catal 7, 227–228 (2024). https://doi.org/10.1038/s41929-024-01127-2

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