UCL  IRIS
Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data grouped in the sections named "Externally Awarded" or "Internally Disbursed" (shown on the profile page) to your Research Finance Administrator. Your can find your Research Finance Administrator at https://www.ucl.ac.uk/finance/research/rs-contacts.php by entering your department
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
A novel fuel cell design for operando energy-dispersive X-ray absorption measurements.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Leach AS, Hack J, Amboage M, Diaz-Moreno S, Huang H, Cullen PL, Wilding M, Magliocca E, Miller T, Howard C, Brett D, Shearing P, McMillan PF, Russell AE, Jervis R
  • Publisher:
    Institute of Physics
  • Publication date:
    24/05/2021
  • Journal:
    Journal of Physics: Condensed Matter
  • Status:
    Published online
  • Country:
    England
  • Print ISSN:
    0953-8984
  • Language:
    eng
  • Keywords:
    Catalysis, Fuel Cell, Operando, Platinum, Polymer electrolyte fuel cell (PEFC), XANES, XAS
Abstract
A polymer electrolyte fuel cell (PEFC) has been designed to allow operando X-ray absorption spectroscopy (XAS) measurements of catalysts. The cell has been developed to operate under standard fuel cell conditions, with elevated temperatures and humidification of the gas-phase reactants, both of which greatly impact the catalyst utilisation. X-ray windows in the endplates of the cell facilitate collection of XAS spectra during fuel cell operation while maintaining good compression in the area of measurement. Results of polarisation curves and cyclic voltammograms (CVs) showed that the operando cell performs well as a fuel cell, while also providing XAS data of suitable quality for robust XANES analysis. The cell has produced comparable XAS results when performing a cyclic voltammogram to an established in situ cell when measuring the Pt LIII edge. Similar trends of Pt oxidation, and reduction of the formed Pt oxide, have been presented with a time resolution of 5 seconds for each spectrum, paving the way for time-resolved spectral measurements of fuel cell catalysts in a fully-operating fuel cell.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Researchers Show More
Author
Dept of Chemical Engineering
Author
Dept of Physics & Astronomy
Author
Dept of Chemical Engineering
Author
Dept of Chemical Engineering
Author
Dept of Chemistry
Author
Dept of Chemical Engineering
Author
Dept of Chemical Engineering
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by