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Issue 8, 2018
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Photoelectrochemical water splitting: an idea heading towards obsolescence?

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Abstract

The production of hydrogen from water and sunlight is a way to address the intermittency in renewable energy production, while simultaneously generating a versatile fuel and a valuable chemical feedstock. Photoelectrochemical water splitting is one possible approach to accomplish this that has been researched since the early seventies. It has for a long time held the promise of having the potential to become the best, cheapest, and most efficient way to convert solar energy into chemical energy in the form of hydrogen, but in this paper, I argue that the time window where this could have happened has now come to an end. With the rapid development of both PV-technology and earth-abundant electrocatalysis, it will be tremendously difficult, even in the best-case scenario, for a classical photoelectrochemical water splitting device to compete with what PV-driven electrolysers can already do today. This is an insight that should influence the future of solar fuel research.

Graphical abstract: Photoelectrochemical water splitting: an idea heading towards obsolescence?

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Publication details

The article was received on 14 Mar 2018, accepted on 30 May 2018 and first published on 30 May 2018


Article type: Opinion
DOI: 10.1039/C8EE00772A
Citation: Energy Environ. Sci., 2018,11, 1977-1979
  • Open access: Creative Commons BY-NC license
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    Photoelectrochemical water splitting: an idea heading towards obsolescence?

    T. J. Jacobsson, Energy Environ. Sci., 2018, 11, 1977
    DOI: 10.1039/C8EE00772A

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