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

David L. Burnett; Enrico Petrucco; Andrea E. Russell; Reza J. Kashtiban; Jonathan D. B Sharman; Richard I. Walton

doi:10.1039/D0CP01378A

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

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

David L. Burnett,

^a Enrico Petrucco,^b Andrea E. Russell,

^c Reza J. Kashtiban,^d Jonathan D. B Sharman^b and Richard I. Walton

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
E-mail: r.i.walton@warwick.ac.uk

^b Johnson Matthey Technology Centre, Blounts Court, Sonning Common, Reading, UK

^c Department of Chemistry, University of Southampton, University Road, Southampton SO17 1BJ, UK

^d Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK

Abstract

Pyrochlore iridates (Na,Ca)_2−xIr₂O₆·H₂O are acid-stable electrocatalysts that are candidates for use in electrolysers and fuel cells. Ir L_III-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.

This article is part of the themed collection: Synchrotron Radiation Techniques in Catalytic Science

Download options Please wait...

Supplementary files

Supplementary information PDF (1396K)

Article information

DOI: https://doi.org/10.1039/D0CP01378A
Article type: Communication
Submitted: 11 mar 2020
Accepted: 22 apr 2020
First published: 18 máj 2020
This article is Open Access

Download Citation

Phys. Chem. Chem. Phys., 2020,22, 18770-18773

Permissions

Request permissions

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, 22, 18770 DOI: 10.1039/D0CP01378A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Social activity

Fetching data from CrossRef.
This may take some time to load.

Physical Chemistry Chemical Physics

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

Abstract

Supplementary files

Article information

Download Citation

Permissions

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

Social activity

Search articles by author

Spotlight

Advertisements