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Publication

Photoelectrochemical deposition of CoP on cuprous oxide photocathodes for solar hydrogen production

Xile Hu, Matthew Thomas Mayer, Lucas-Alexandre Stern, Laurent Liardet, Carlos Gilberto Morales Guio
2017
Journal Articles

Abstract

Photoelectrochemical (PEC) water splitting is an attractive and sustainable energy conversion method. In this work, cobalt phosphide (CoP) is photoelectrochemically deposited on a p-type cuprous oxide (pCu(2)O) photocathode for solar hydrogen production. Under visible light irradiation, the PEC assembly is active for hydrogen evolution, generating a current density of up to -5.3 mA cm(-2) and -4.2 mA cm(-2) in acidic and basic conditions at 0 V vs. the reversible hydrogen electrode (RHE). (C) 2017 Elsevier Ltd. All rights reserved.

Official source

https://infoscience.epfl.ch/entities/publication/c0ed2764-3ebc-464c-a1b6-abf33e04d50d

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Xile Hu, Matthew Thomas Mayer, Lucas-Alexandre Stern, Laurent Liardet, Carlos Gilberto Morales Guio
2017
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/c0ed2764-3ebc-464c-a1b6-abf33e04d50d

About this result

Ontological neighbourhood

Energy engineering

Fuel power: Hydrogen fuel

Related concepts (31)

Hydrogen economy

The hydrogen economy uses hydrogen to decarbonize economic sectors which are hard to electrify, essentially, the "hard-to-abate" sectors such as cement, steel, long-haul transport, etc. In order to phase out fossil fuels and limit climate change, hydrogen can be created from water using renewable sources such as wind and solar, and its combustion only releases water vapor into the atmosphere. Although with a very low volumetric energy density hydrogen is an energetic fuel, frequently used as rocket fuel, but numerous technical challenges prevent the creation of a large-scale hydrogen economy.

Photocatalytic water splitting

Photocatalytic water splitting is a process that uses photocatalysis for the dissociation of water (H2O) into hydrogen (H2) and oxygen (O2). Only light energy (photons), water, and a catalyst(s) are needed, since this is what naturally occurs in natural photosynthetic oxygen production and CO2 fixation. Photocatalytic water splitting is done by dispersing photocatalyst particles in water or depositing them on a substrate, unlike Photoelectrochemical cell, which are assembled into a cell with a photoelectrode.

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.

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