ELECTROCATALYTIC WATER SPLITTING USING CO3O4 FILMS PREPARED BY A PASTE COATING

Title
ELECTROCATALYTIC WATER SPLITTING USING CO3O4 FILMS PREPARED BY A PASTE COATING
Authors
박원일전효상김재훈민병권
Keywords
electrocatalysts; water splitting; Co3O4
Issue Date
2010-07
Publisher
18th International Conference on Photochemical Conversion and Storage of Solar Energy (IPS-18)
Abstract
Direct electrochemical water splitting is a non-polluting way of producing pure hydrogen. Particularly, the products are free of CO, which is very beneficial in fuel cell applications. In the electrochemical water splitting, the obstacle would be an anodic reaction for oxygen evolution where substantial energy loss occurs mainly due to the high overpotential. Numerous electrocatalysts have been applied to reduce the overpotential in the water splitting including expensive precious metals (e.g. Ir, Ru, and Rh). In this study, we focused on the development of electrocatalyst with low cost ways: inexpensive material as well as low cost coating method. In order to achieve this aim Co3O4 nanoparticle was applied to prepare a paste which was then coated by a doctor-blade method on a conductive metal foil such as stainless steel. Furthermore, we prepared the Co3O4 films at relatively low temperature (~50℃) using Nafion as a binder, which potentially extend their applications. The structural characterizations of Co3O4 films were investigated by SEM and XRD. In addition, the films were applied to the water splitting experiment set-up to measure their electrocatalytic ability. The details will be discussed in the presentation
URI
http://pubs.kist.re.kr/handle/201004/37746
Appears in Collections:
KIST Publication > Conference Paper
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