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Issue 28, 2021
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Recent advances in doped ruthenium oxides as high-efficiency electrocatalysts for the oxygen evolution reaction

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Abstract

Rutile ruthenium oxide (RuO2) exhibits relatively high reactivity towards the oxygen evolution reaction (OER) due to its moderate capacity to bind oxygen. Thus, RuO2 has been demonstrated as a benchmark electrocatalyst for the anodic reaction of water splitting, especially in an acidic electrolyte. Nevertheless, there is still much room to promote the OER catalytic activity and the operational stability of RuO2 to fulfill the requirements of practical applications. Optimizing the composition of RuO2 by a simple doping strategy can be considerably beneficial, with enhanced catalytic activity and excellent stability achieved simultaneously. This review presents the recent progress in doped ruthenium oxides as high-efficiency electrocatalysts for the OER, with various types of dopants and design strategies summarized as well. Maps of OER performance outcomes, including activity and stability, are presented to demonstrate the advantages of doping and to compare the different effects of various introduced metal elements. Special attention is paid to a clearer understanding of triggering reaction mechanisms by a series of characterizations. The remaining challenges and future research directions are also proposed.

Graphical abstract: Recent advances in doped ruthenium oxides as high-efficiency electrocatalysts for the oxygen evolution reaction

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Article information


Submitted
25 Apr 2021
Accepted
10 Jun 2021
First published
15 Jun 2021

J. Mater. Chem. A, 2021,9, 15506-15521
Article type
Review Article

Recent advances in doped ruthenium oxides as high-efficiency electrocatalysts for the oxygen evolution reaction

H. Sun and W. Jung, J. Mater. Chem. A, 2021, 9, 15506 DOI: 10.1039/D1TA03452A

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