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Supported Nanostructured Ir and IrRu Electrocatalysts for Oxygen Evolution in PEM Electrolysers

Supported Nanostructured Ir and IrRu Electrocatalysts for Oxygen Evolution in PEM Electrolysers

Category
Journal publication
Abstract
With a modified polyol method, Ir and IrRu was deposited on Sb-doped SnO2 nanoparticles functioning as a support material for the anode catalysts for poylmer electrolyte water electrolysers. Nanostructured iridium particles (2-3 nm) were deposited onto the ATO particles, characterized with XRD, TEM and XPS. The Ir/ATO particles showed a higher surface area and catalytic activity for the oxygen evolution than unsupported Ir black. A PEM water electrolyser single cell with 4 mg 20 wt% Ir/ATO cm-2 achieved 1.65 V at 1 A cm-2 at 80 °C. After operation at 1 A cm-2 for 100h, an increase of the iR-corrected cell voltage with 50 mV was observed.
Language
English
Affiliation
  • SINTEF Industry / Sustainable Energy Technology
  • SINTEF Industry / Process Technology
Year
2011
Published in
ECS Transactions
ISSN
1938-5862
Publisher
Electrochemical Society
Volume
35
Issue
34
Page(s)
271 - 279