Document Detail


Light-induced water oxidation at silicon electrodes functionalized with a cobalt oxygen-evolving catalyst.
MedLine Citation:
PMID:  21646536     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Joep J H Pijpers; Mark T Winkler; Yogesh Surendranath; Tonio Buonassisi; Daniel G Nocera
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2011-06-06
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  108     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-06-22     Completed Date:  2011-09-29     Revised Date:  2011-12-21    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  10056-61     Citation Subset:  -    
Affiliation:
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA.
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