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Nickel oxide functionalized silicon for efficient photo-oxidation of water
Abstract
We report a nickel oxide (NiOx) thin film, from a cost-effective sol–gel process, coated n-type silicon (n-Si) as a photoanode for efficient photo-oxidation of water under neutral pH condition. The NiOx thin film has three functions: (i) serves as a protection layer to improve the chemical stability of the Si photoelectrode, (ii) acts as an oxygen evolution catalyst, and (iii) provides junction photovoltage to further reduce overpotential. The oxygen evolution onset potential is reduced to below the thermodynamic water oxidation level and oxygen evolution was observed at low overpotentials. Our results demonstrate the fabrication of robust photoelectrodes from low-cost NiOx and Si, which enable a practical solar water oxidation with high efficiency.
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Cites
Computational high-throughput screening of electrocatalytic materials for hydrogen evolution
Greeley, J., Jaramillo, T. F., Bonde, J., Chorkendorff, I., & Nørskov, J. K. (2006) · Nature Materials · doi:10.1038/nmat1752 · Cited by 4,097
Comparing Photosynthetic and Photovoltaic Efficiencies and Recognizing the Potential for Improvement
Blankenship, R. E., Tiede, D. M., Barber, J., Brudvig, G. W., Fleming, G., Ghirardi, M., Gunner, M. R., Junge, W., Kramer, D. M., Melis, A., et al. (2011) · Science · doi:10.1126/science.1200165 · Cited by 1,638
Cited by
Thin-Film Materials for the Protection of Semiconducting Photoelectrodes in Solar-Fuel Generators
Hu, S., Lewis, N. S., Ager, J. W., Yang, J., McKone, J. R., & Strandwitz, N. C. (2015) · The Journal of Physical Chemistry C · doi:10.1021/acs.jpcc.5b05976 · Cited by 290
Metadata
- Authors
- Sun, K., Park, N., Sun, Z., Zhou, J., Wang, J., Pang, X., Shen, S., Noh, S. Y., Jing, Y., Jin, S., Yu, P. K. L., & Wang, D.
- Venue
- Energy & Environmental Science
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2012
- Volume
- 5
- Issue
- 7
- Pages
- 7872
- ISSN
- 1754-5692 (ISSN-L)
- 1754-5706
- OpenAlex
- W2068494928
- Cited by
- 171
- References
- 2
- FWCI
- 6.56
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sun, K., Park, N., Sun, Z., Zhou, J., Wang, J., Pang, X., Shen, S., Noh, S. Y., Jing, Y., Jin, S., Yu, P. K. L., & Wang, D. (2012). Nickel oxide functionalized silicon for efficient photo-oxidation of water. Energy & Environmental Science. https://doi.org/10.1039/c2ee21708b
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