Bias-assisted H2 gas generation in HCl and KOH solutions using n-type GaN photoelectrode

Katsushi Fujii; Kazuhiro Ohkawa

doi:10.1149/1.2161572

Bias-assisted H2 gas generation in HCl and KOH solutions using n-type GaN photoelectrode

Katsushi Fujii^*, Kazuhiro Ohkawa

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

57 Scopus citations

Abstract

We studied H2 gas generation using a GaN photoelectrode in both HCl and KOH solutions. The photocurrent in KOH was larger than that in HCl under a small extra bias, and caused a more extensive H2 generation at the beginning. GaN corrosion in HCl was less extended than that in KOH during photoelectrochemical reactions. The stability of the GaN photoelectrode in HCl was a result of H2 O reduction and Cl- oxidation instead of water photoelectrolysis.

Original language	English (US)
Pages (from-to)	A468-A471
Journal	JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume	153
Issue number	3
DOIs	https://doi.org/10.1149/1.2161572
State	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/1.2161572

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abstract = "We studied H2 gas generation using a GaN photoelectrode in both HCl and KOH solutions. The photocurrent in KOH was larger than that in HCl under a small extra bias, and caused a more extensive H2 generation at the beginning. GaN corrosion in HCl was less extended than that in KOH during photoelectrochemical reactions. The stability of the GaN photoelectrode in HCl was a result of H2 O reduction and Cl- oxidation instead of water photoelectrolysis.",

author = "Katsushi Fujii and Kazuhiro Ohkawa",

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AU - Fujii, Katsushi

AU - Ohkawa, Kazuhiro

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N2 - We studied H2 gas generation using a GaN photoelectrode in both HCl and KOH solutions. The photocurrent in KOH was larger than that in HCl under a small extra bias, and caused a more extensive H2 generation at the beginning. GaN corrosion in HCl was less extended than that in KOH during photoelectrochemical reactions. The stability of the GaN photoelectrode in HCl was a result of H2 O reduction and Cl- oxidation instead of water photoelectrolysis.

AB - We studied H2 gas generation using a GaN photoelectrode in both HCl and KOH solutions. The photocurrent in KOH was larger than that in HCl under a small extra bias, and caused a more extensive H2 generation at the beginning. GaN corrosion in HCl was less extended than that in KOH during photoelectrochemical reactions. The stability of the GaN photoelectrode in HCl was a result of H2 O reduction and Cl- oxidation instead of water photoelectrolysis.

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U2 - 10.1149/1.2161572

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M3 - Article

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Bias-assisted H2 gas generation in HCl and KOH solutions using n-type GaN photoelectrode

Abstract

ASJC Scopus subject areas

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