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In situ XAFS of acid-resilient iridate pyrochlore oxygen evolution electrocatalysts under operating conditions

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Abstract

Pyrochlore iridates (Na,Ca)2−xIr2O6·H2O are acid-stable electrocatalysts that are candidates for use in electrolysers and fuel cells. Ir LIII-edge X-ray absorption fine structure spectroscopy in 1 M H2SO4 at oxygen evolution conditions suggests the involvement of the electrons from the conduction band of the metallic particles, rather than just surface iridium reacting.

Graphical abstract: In situ XAFS of acid-resilient iridate pyrochlore oxygen evolution electrocatalysts under operating conditions

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Article information


Submitted
11 Mar 2020
Accepted
22 Apr 2020
First published
18 May 2020

This article is Open Access

Phys. Chem. Chem. Phys., 2020, Advance Article
Article type
Communication

In situ XAFS of acid-resilient iridate pyrochlore oxygen evolution electrocatalysts under operating conditions

D. L. Burnett, E. Petrucco, A. E. Russell, R. J. Kashtiban, J. D. B. Sharman and R. I. Walton, Phys. Chem. Chem. Phys., 2020, Advance Article , DOI: 10.1039/D0CP01378A

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