Publication

Photocorrosion in Proton-exchange and Anion-exchange Membrane Photoelectrode Assemblies for Water Splitting with BiVO4 Photoanodes

2024

Abstract

Membrane-photoelectrode assemblies, i.e. photoelectrodes on porous substrates coated with an ionomer and directly integrated with a polymeric ion-exchange membrane, are a promising design configuration to perform photoelectrochemical water splitting [1]. This compact and modular design inspired by commercial electrolyzers allows to feed the system with pure water (in liquid or gaseous phase) minimizing the products crossover.

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2024

Abstract

Official source

Related concepts (31)

Electrolysis of water

Electrolysis of water is using electricity to split water into oxygen (O2) and hydrogen (H2) gas by electrolysis. Hydrogen gas released in this way can be used as hydrogen fuel, but must be kept apart from the oxygen as the mixture would be extremely explosive. Separately pressurised into convenient 'tanks' or 'gas bottles', hydrogen can be used for oxyhydrogen welding and other applications, as the hydrogen / oxygen flame can reach circa 2,800°C. Water electrolysis requires a minimum potential difference of 1.

Artificial photosynthesis

Artificial photosynthesis is a chemical process that biomimics the natural process of photosynthesis to convert sunlight, water, and carbon dioxide into carbohydrates and oxygen. The term artificial photosynthesis is commonly used to refer to any scheme for capturing and storing the energy from sunlight in the chemical bonds of a fuel (a solar fuel). Photocatalytic water splitting converts water into hydrogen and oxygen and is a major research topic of artificial photosynthesis.

Water splitting

Water splitting is the chemical reaction in which water is broken down into oxygen and hydrogen: 2 H2O → 2 H2 + O2 Efficient and economical water splitting would be a technological breakthrough that could underpin a hydrogen economy, based on green hydrogen. A version of water splitting occurs in photosynthesis, but hydrogen is not produced. The reverse of water splitting is the basis of the hydrogen fuel cell. Electrolysis of water Electrolysis of water is the decomposition of water (H2O) into oxygen (O2) and hydrogen (H2) due to an electric current being passed through the water.

Related publications (3)

Photocorrosion in Proton-exchange and Anion-exchange Membrane Photoelectrode Assemblies for Water Splitting with BiVO4 Photoanodes

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