Solar water splitting by photovoltaic-electrolysis with a solar-to-hydrogen efficiency over 30%
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Open Access
- 31 October 2016
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 7 (1), 13237
- https://doi.org/10.1038/ncomms13237
Abstract
Hydrogen production via electrochemical water splitting is a promising approach for storing solar energy. For this technology to be economically competitive, it is critical to develop water splitting systems with high solar-to-hydrogen (STH) efficiencies. Here we report a photovoltaic-electrolysis system with the highest STH efficiency for any water splitting technology to date, to the best of our knowledge. Our system consists of two polymer electrolyte membrane electrolysers in series with one InGaP/GaAs/GaInNAsSb triple-junction solar cell, which produces a large-enough voltage to drive both electrolysers with no additional energy input. The solar concentration is adjusted such that the maximum power point of the photovoltaic is well matched to the operating capacity of the electrolysers to optimize the system efficiency. The system achieves a 48-h average STH efficiency of 30%. These results demonstrate the potential of photovoltaic-electrolysis systems for cost-effective solar energy storage.This publication has 34 references indexed in Scilit:
- Accelerating materials development for photoelectrochemical hydrogen production: Standards for methods, definitions, and reporting protocolsJournal of Materials Research, 2010
- An overview of hydrogen production technologiesCatalysis Today, 2008
- Toward Cost-Effective Solar Energy UseScience, 2007
- Solar-hydrogen: Environmentally safe fuel for the futureInternational Journal of Hydrogen Energy, 2005
- Photo-electrochemical hydrogen generation from water using solar energy. Materials-related aspectsInternational Journal of Hydrogen Energy, 2002
- Spectral mismatch correction and spectrometric characterization of monolithic III–V multi‐junction solar cellsProgress In Photovoltaics, 2002
- Efficient Solar Water Splitting, Exemplified by RuO2-Catalyzed AlGaAs/Si PhotoelectrolysisThe Journal of Physical Chemistry B, 2000
- Photoelectrochemical production of hydrogen: Engineering loss analysisInternational Journal of Hydrogen Energy, 1997
- Limiting and realizable efficiencies of solar photolysis of waterNature, 1985
- Detailed balance limit of the efficiency of tandem solar cellsJournal of Physics D: Applied Physics, 1980