Printed Co3O4 film as an electrocatalyst for hydrogen production by a monolithic photovoltaic-electrolysis system

Title
Printed Co3O4 film as an electrocatalyst for hydrogen production by a monolithic photovoltaic-electrolysis system
Authors
전효상박원일김재훈김홍곤김웅민병권
Keywords
Co3O4; electrocatalysts; photovoltaic-electrolysis; Water splitting; Hydrogen; Nafion
Issue Date
2011-02
Publisher
International journal of hydrogen energy
Citation
VOL 36, NO 3, 1924-1929
Abstract
In a monolithic photovoltaic-electrolysis system, photovoltaic and catalytic layers are generally constructed on both sides of a conducting substrate. For the realization of this architecture it is critical to fabricate the catalytic layer at sufficiently low temperature in order not to deteriorate the photovoltaic photoanode that is already installed on the reverse side of the catalytic layer. In this study we demonstrate successful fabrication of Co3O4 electrocatalyst films at low temperature (~50℃) on a stainless steel substrate by a paste coating method using Nafion as a binder. The Co3O4 films were found to be catalytically efficient and stable in water splitting reaction in an alkaline aqueous solution. More importantly, the Co3O4 films casted at low temperature (~50℃) revealed the highest hydrogen production rate in the electrolytic cell compared to the films prepared at higher temperatures (e.g. 150 and 300℃), which would be very beneficial in the construction of a monolithic photovoltaic-electrolysis system.
URI
http://pubs.kist.re.kr/handle/201004/39409
ISSN
0360-3199
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KIST Publication > Article
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