Water splitting by dimensionally stable anode prepared through micro-arc oxidation

Dimensionally stable electrode (DSA) was prepared by coating Ru4+ and Ir4+ on various anodic TiO2 substrates. The TiO2 substrates were prepared using three anodization techniques; micro-arc oxidation, synthesis of TiO2 nanotubes and formation of a barrier layer. Micro-arc oxidation at high potential...

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Bibliographic Details
Published inMaterials letters Vol. 105; pp. 117 - 119
Main Authors Shin, Sowoon, Choi, Yong-Wook, Choi, Jinsub
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.08.2013
Subjects
Anodic
Anodization
coatings
Electrodes
Electrolysis
Micro-arc oxidation
micropores
Nanotubes
Oxidation
oxygen
Substrates
Synthesis
Titanium dioxide
Water splitting
Electrolysis
Anodization
Micro-arc oxidation
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Summary:Dimensionally stable electrode (DSA) was prepared by coating Ru4+ and Ir4+ on various anodic TiO2 substrates. The TiO2 substrates were prepared using three anodization techniques; micro-arc oxidation, synthesis of TiO2 nanotubes and formation of a barrier layer. Micro-arc oxidation at high potential produced irregular micropores. With nanotube synthesis, well-defined nanotubular pores were formed at relatively low potentials. To form the barrier layer, an oxide film was prepared in a single H3PO4 solution. Among the DSAs synthesized on the anodic substrates, the micropore structures showed the lowest overpotential for O2 evolution, indicating this DSA to be most suitable as an electrode for water splitting. •Dimensionally stable electrode is prepared by coating Ru4+ on anodic TiO2.•Micro-arc oxidation produces most suitable electrode for water splitting.•RuO2 on TiO2 shows excellent electro-catalytic properties.
Bibliography:http://dx.doi.org/10.1016/j.matlet.2013.04.065
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2013.04.065