Local compressive strain-induced anti-corrosion over isolated Ru-decorated Co3O4 for efficient acidic oxygen evolution

Shouwei Zuo, Zhi-Peng Wu, Deting Xu, Rafia Ahmad, Lirong Zheng, Jing Zhang, Lina Zhao (), Wenhuan Huang, Hassan Al Qahtani, Yu Han, Luigi Cavallo () and Huabin Zhang ()
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Shouwei Zuo: King Abdullah University of Science and Technology
Zhi-Peng Wu: King Abdullah University of Science and Technology
Deting Xu: Chinese Academy of Sciences
Rafia Ahmad: King Abdullah University of Science and Technology (KAUST)
Lirong Zheng: Chinese Academy of Sciences
Jing Zhang: Chinese Academy of Sciences
Lina Zhao: Chinese Academy of Sciences
Wenhuan Huang: Shaanxi University of Science and Technology
Hassan Al Qahtani: Saudi Aramco
Yu Han: King Abdullah University of Science and Technology (KAUST)
Luigi Cavallo: King Abdullah University of Science and Technology (KAUST)
Huabin Zhang: King Abdullah University of Science and Technology

Nature Communications, 2024, vol. 15, issue 1, 1-14

Abstract: Abstract Enhancing corrosion resistance is essential for developing efficient electrocatalysts for acidic oxygen evolution reaction (OER). Herein, we report the strategic manipulation of the local compressive strain to reinforce the anti-corrosion properties of the non-precious Co3O4 support. The incorporation of Ru single atoms, larger in atomic size than Co, into the Co3O4 lattice (Ru-Co3O4), triggers localized strain compression and lattice distortion on the Co-O lattice. A comprehensive exploration of the correlation between this specific local compressive strain and electrocatalytic performance is conducted through experimental and theoretical analyses. The presence of the localized strain in Ru-Co3O4 is confirmed by operando X-ray absorption studies and supported by quantum calculations. This local strain, presented in a shortened Co-O bond length, enhances the anti-corrosion properties of Co3O4 by suppressing metal dissolutions. Consequently, Ru-Co3O4 shows satisfactory stability, maintaining OER for over 400 hours at 30 mA cm−2 with minimal decay. This study demonstrates the potential of the local strain effect in fortifying catalyst stability for acidic OER and beyond.

Date: 2024
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DOI: 10.1038/s41467-024-53763-8

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