期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 108, 期 25, 页码 10056-10061出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1106545108
关键词
photoelectrochemical; hydrogen; solar energy; storage
资金
- Netherlands Organization for Scientific Research (NWO)
- National Science Foundation (NSF) [CHE-0533150]
- Air Force Office of Scientific Research (AFOSR) [FA9550-09-1-0689]
- Chesonis Family Foundation
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0802907] Funding Source: National Science Foundation
Integrating a silicon solar cell with a recently developed cobalt-based water-splitting catalyst (Co-Pi) yields a robust, monolithic, photo-assisted anode for the solar fuels process of water splitting to O-2 at neutral pH. Deposition of the Co-Pi catalyst on the Indium Tin Oxide (ITO)-passivated p-side of a np-Si junction enables the majority of the voltage generated by the solar cell to be utilized for driving the water-splitting reaction. Operation under neutral pH conditions fosters enhanced stability of the anode as compared to operation under alkaline conditions (pH 14) for which long-term stability is much more problematic. This demonstration of a simple, robust construct for photo-assisted water splitting is an important step towards the development of inexpensive direct solar-to-fuel energy conversion technologies.
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