Publication

Great expectations for photoelectrochemical water splitting

Michael Graetzel, Stanley David Tilley
2012
Conference Papers

Abstract

The first Bilateral Energy Conference-organized jointly by the E-MRS and MRS-was held at the E-MRS Spring Meeting this year and included the first symposium to appear in Europe dedicated to solar hydrogen production. The strong turnout and high level of interest that was expressed in this symposium bodes well for the future of this exciting and important field. (c) 2012 Published by Elsevier Ltd. Selection and/or peer review under responsibility of European Material Research Society (E-MRS)

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https://infoscience.epfl.ch/entities/publication/2cdfc9e8-ab62-4d9f-82f4-f273278e763e

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Michael Graetzel, Stanley David Tilley
2012
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/2cdfc9e8-ab62-4d9f-82f4-f273278e763e

About this result

Related concepts (16)

Hydrogen production

Hydrogen production is the family of industrial methods for generating hydrogen gas. As of 2020, the majority of hydrogen (~95%) is produced from fossil fuels by steam reforming of natural gas and other light hydrocarbons, partial oxidation of heavier hydrocarbons, and coal gasification. Other methods of hydrogen production include biomass gasification, methane pyrolysis, and electrolysis of water. Methane pyrolysis and water electrolysis can use any source of electricity including solar power.

Biohydrogen

Biohydrogen is H2 that is produced biologically. Interest is high in this technology because H2 is a clean fuel and can be readily produced from certain kinds of biomass, including biological waste. Furthermore some photosynthetic microorganisms are capable to produce H2 directly from water splitting using light as energy source. Besides the promising possibilities of biological hydrogen production, many challenges characterize this technology. First challenges include those intrinsic to H2, such as storage and transportation of an explosive noncondensible gas.

Photoelectrochemical cell

A "photoelectrochemical cell" is one of two distinct classes of device. The first produces electrical energy similarly to a dye-sensitized photovoltaic cell, which meets the standard definition of a photovoltaic cell. The second is a photoelectrolytic cell, that is, a device which uses light incident on a photosensitizer, semiconductor, or aqueous metal immersed in an electrolytic solution to directly cause a chemical reaction, for example to produce hydrogen via the electrolysis of water.

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