期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 4, 期 3, 页码 958-964出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ee00570c
关键词
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资金
- Swiss Federal Office of Energy [102326]
- European Commission [227179]
- Russell Berrie Nanotechnology Institute (RBNI)
- Wolfson Family Charitable Trust
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.
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