Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 4, Issue 6, Pages 2058-2061Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ee01209f
Keywords
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Funding
- National Science Foundation [CHE-0936816]
- Chesonis Family Foundation
- MIT NSF
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0936816] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [819762] Funding Source: National Science Foundation
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Integrating chemical catalysts for water splitting with photoanode materials is a longstanding challenge in demonstrating light-assisted water oxidation, a process which can be used for the generation of solar fuels. In this work we use a silicon photoanode as a substrate for processing cobalt metal films to form a cobalt-based water oxidation catalyst (Co-Pi) integrated with the silicon photoanode. The Co-Pi coated photoanodes show catalytic onset at 0.85 V under illumination, which is better than silicon photoanodes coated with ITO and solution-deposited Co-Pi (catalytic onset at 1.05 V) and significantly better photoanodes with only ITO contacts (catalytic activity onset at 1.6 V).
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