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Title: A multifunctional biphasic water splitting catalyst tailored for integration with high-performance semiconductor photoanodes

Abstract

Artificial photosystems are advanced by the development of conformal catalytic materials that promote desired chemical transformations, while also maintaining stability and minimizing parasitic light absorption for integration on surfaces of semiconductor light absorbers. We demonstrate that multifunctional, nanoscale catalysts that enable high-performance photoelectrochemical energy conversion can be engineered by plasma-enhanced atomic layer deposition. The collective properties of tailored Co 3 O 4 /Co(OH) 2 thin films simultaneously provide high activity for water splitting, permit efficient interfacial charge transport from semiconductor substrates, and enhance durability of chemically sensitive interfaces. Furthermore, these films comprise compact and continuous nanocrystalline Co 3 O 4 spinel that is impervious to phase transformation and impermeable to ions, thereby providing effective protection of the underlying substrate. Moreover, a secondary phase of structurally disordered and chemically labile Co(OH) 2 is introduced to ensure a high concentration of catalytically active sites. Application of this coating to photovoltaic p + n-Si junctions yields best reported performance characteristics for crystalline Si photoanodes.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]; ORCiD logo [2];  [2];  [3]; ORCiD logo [4];  [5];  [5];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint Center for Artificial Photosynthesis, Chemical Sciences Division
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Biophysics and Integrated Bioimaging
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint Center for Artificial Photosynthesis, Molecular Biophysics and Integrated Bioimaging
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry, Materials Science Division
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1379751
Grant/Contract Number:  
AC02-05CH11231; SC0004993
Resource Type:
Accepted Manuscript
Journal Name:
Nature Materials
Additional Journal Information:
Journal Volume: 16; Journal Issue: 3; Journal ID: ISSN 1476-1122
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; electrocatalysts; electronic materials; photocatalysis; synthesis and processing

Citation Formats

Yang, Jinhui, Cooper, Jason K., Toma, Francesca M., Walczak, Karl A., Favaro, Marco, Beeman, Jeffrey W., Hess, Lucas H., Wang, Cheng, Zhu, Chenhui, Gul, Sheraz, Yano, Junko, Kisielowski, Christian, Schwartzberg, Adam, and Sharp, Ian D.. A multifunctional biphasic water splitting catalyst tailored for integration with high-performance semiconductor photoanodes. United States: N. p., 2016. Web. https://doi.org/10.1038/nmat4794.
Yang, Jinhui, Cooper, Jason K., Toma, Francesca M., Walczak, Karl A., Favaro, Marco, Beeman, Jeffrey W., Hess, Lucas H., Wang, Cheng, Zhu, Chenhui, Gul, Sheraz, Yano, Junko, Kisielowski, Christian, Schwartzberg, Adam, & Sharp, Ian D.. A multifunctional biphasic water splitting catalyst tailored for integration with high-performance semiconductor photoanodes. United States. https://doi.org/10.1038/nmat4794
Yang, Jinhui, Cooper, Jason K., Toma, Francesca M., Walczak, Karl A., Favaro, Marco, Beeman, Jeffrey W., Hess, Lucas H., Wang, Cheng, Zhu, Chenhui, Gul, Sheraz, Yano, Junko, Kisielowski, Christian, Schwartzberg, Adam, and Sharp, Ian D.. Mon . "A multifunctional biphasic water splitting catalyst tailored for integration with high-performance semiconductor photoanodes". United States. https://doi.org/10.1038/nmat4794. https://www.osti.gov/servlets/purl/1379751.
@article{osti_1379751,
title = {A multifunctional biphasic water splitting catalyst tailored for integration with high-performance semiconductor photoanodes},
author = {Yang, Jinhui and Cooper, Jason K. and Toma, Francesca M. and Walczak, Karl A. and Favaro, Marco and Beeman, Jeffrey W. and Hess, Lucas H. and Wang, Cheng and Zhu, Chenhui and Gul, Sheraz and Yano, Junko and Kisielowski, Christian and Schwartzberg, Adam and Sharp, Ian D.},
abstractNote = {Artificial photosystems are advanced by the development of conformal catalytic materials that promote desired chemical transformations, while also maintaining stability and minimizing parasitic light absorption for integration on surfaces of semiconductor light absorbers. We demonstrate that multifunctional, nanoscale catalysts that enable high-performance photoelectrochemical energy conversion can be engineered by plasma-enhanced atomic layer deposition. The collective properties of tailored Co 3 O 4 /Co(OH) 2 thin films simultaneously provide high activity for water splitting, permit efficient interfacial charge transport from semiconductor substrates, and enhance durability of chemically sensitive interfaces. Furthermore, these films comprise compact and continuous nanocrystalline Co 3 O 4 spinel that is impervious to phase transformation and impermeable to ions, thereby providing effective protection of the underlying substrate. Moreover, a secondary phase of structurally disordered and chemically labile Co(OH) 2 is introduced to ensure a high concentration of catalytically active sites. Application of this coating to photovoltaic p + n-Si junctions yields best reported performance characteristics for crystalline Si photoanodes.},
doi = {10.1038/nmat4794},
journal = {Nature Materials},
number = 3,
volume = 16,
place = {United States},
year = {2016},
month = {11}
}

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