Light-induced water oxidation at silicon electrodes functionalized with a cobalt oxygen-evolving catalyst
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Nocera-2011-June-Light-induced water oxidation.pdf
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Author(s)
Pijpers, Joep J. H.
Winkler, Mark Thomas
Surendranath, Yogesh
Nocera, Daniel G.
Buonassisi, Anthony
Date Issued
June 2011
Journal
Proceedings of the National Academy of Sciences of the United States of America
Publisher
National Academy of Sciences (U.S.)
Citation
Pijpers, J. J. H. et al. “Light-induced Water Oxidation at Silicon Electrodes Functionalized with a Cobalt Oxygen-evolving Catalyst.” Proceedings of the National Academy of Sciences 108.25 (2011): 10056–10061. Web.
Version
Final published version
Abstract
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 O2 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.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Laboratory for Manufacturing and Productivity
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1073/pnas.1106545108
