Russell, Andrea E.; Tessier, Beatrice; Wise, Anna; Rose, Abigail; Price, Stephen W.; Richardson, P. W.; Ball, Sarah; Theobald, Brian; Thompsett, David and Crabb, Eleanor M.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1149/1.3635543|
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Core-shell electrocatalysts are of increased interest in PEM fuel cells as a means of improving activity and reducing costs. In situ x-ray absorption spectroscopy (XAS) provides a unique opportunity to provide characterization of the structure of such materials under operating conditions, enabling the effects of the electrochemical environment on the structures to be explored. However, such measurements present numerous challenges in terms of both data collection and analysis. Here we present two case studies that illustrate both the opportunities and challenges; (i) the modification of a Pt catalyst by Ru and the potential dependent formation of a surface alloy and (ii) a Pt shell - Pd core catalyst with varying shell thickness.
|Item Type:||Journal Article|
|Copyright Holders:||2011 The Electrochemical Society|
|Academic Unit/Department:||Science > Life, Health and Chemical Sciences|
|Interdisciplinary Research Centre:||Biomedical Research Network (BRN)
Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
|Depositing User:||Eleanor Crabb|
|Date Deposited:||06 Mar 2012 11:41|
|Last Modified:||24 Nov 2014 11:31|
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