Issue 20, 2026
From the journal:

Chemical Communications

Strain-boosted electrocatalytic activity for oxygen evolution in RuO2 epitaxial thin films

Zainab Fatima,a   Daichi Oka, ORCID logo *ab   Koji Kimura,c   Naohisa Happo,d   Koichi Hayashi,c   Yuji Matsumoto,e   Yasushi Hirose ORCID logo b  and  Tomoteru Fukumura ORCID logo af  

* Corresponding authors

a Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan

b Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Tokyo 192-0397, Japan
E-mail: daichi.oka@tmu.ac.jp

c Department of Physical Science and Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan

d Graduate School of Information Sciences, Hiroshima City University, Hiroshima 731-3194, Japan

e Department of Applied Chemistry, School of Engineering, Tohoku University, Sendai 980-8579, Japan

f Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

Abstract

We demonstrate that applying large a-axis strains of up to 5.2% dramatically enhances the electrocatalytic activity of RuO2(100) epitaxial thin films for the oxygen evolution reaction. A transition in the catalytic reaction mechanism by the c-axis compression was proposed based on synchrotron X-ray fluorescence holography.

Graphical abstract: Strain-boosted electrocatalytic activity for oxygen evolution in RuO2 epitaxial thin films

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Article information

DOI
https://doi.org/10.1039/D5CC07318A
Article type
Communication
Submitted
24 Dec 2025
Accepted
23 Feb 2026
First published
24 Feb 2026

Chem. Commun., 2026,62, 5762-5766

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Strain-boosted electrocatalytic activity for oxygen evolution in RuO2 epitaxial thin films

Z. Fatima, D. Oka, K. Kimura, N. Happo, K. Hayashi, Y. Matsumoto, Y. Hirose and T. Fukumura, Chem. Commun., 2026, 62, 5762 DOI: 10.1039/D5CC07318A

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