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research article
Probing the photoelectrochemical properties of hematite (alpha-Fe2O3) electrodes using hydrogen peroxide as a hole scavenger
We study hematite (alpha-Fe2O3) photoelectrodes for water splitting by examining the fate of photogenerated holes. Using H2O2 as an efficient hole scavenger, we collect all holes that arrive at the electrode/electrolyte interface. This provides the ability to distinguish between and quantify bulk and surface recombination processes involved in the photoelectrochemical oxidation of water. Below 1.0 V-RHE, electrolyte oxidation kinetics limits the performance but above 1.2 V-RHE bulk recombination becomes the limiting factor.
Type
research article
Web of Science ID
WOS:000287924700042
Authors
Publication date
2011
Published in
Volume
4
Start page
958
End page
964
Peer reviewed
REVIEWED
Written at
EPFL
EPFL units
Available on Infoscience
December 16, 2011
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