The influence of coating solution and calcination condition on the durability of Ir1-xSnxO2/Ti anodes for oxygen evolution
| Autor: | Shinnosuke Fukuyama, Koji Hashimoto, Zenta Kato, Koichi Izumiya, Kumagai Naokazu, Kohei Tatsumi, Ryo Kashima |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Inorganic chemistry Oxide General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences Oxygen law.invention Catalysis chemistry.chemical_compound law Calcination Electrolysis Oxygen evolution Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Anode chemistry 0210 nano-technology Titanium |
| Zdroj: | Applied Surface Science. 388:640-644 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2016.03.071 |
| Popis: | For oxygen formation without forming chlorine in seawater electrolysis for hydrogen production we have been using the anode consisting of three layers of MnO2-type multiple oxide catalyst, intermediate layer and titanium substrate. The intermediate layer was used for prevention of oxidation of the titanium substrate during anodic polarization for oxygen evolution and was prepared by calcination of butanol solutions of H2IrCl6 and SnCl4 coated on titanium. The protectiveness of Ir1-xSnxO2 layer formed was directly examined using Ir1-xSnxO2/Ti anodes in H2SO4 solution changing the preparation conditions of the layer. When the sum of Ir4+ and Sn4+ was 0.1 M, the highest protectiveness was observed at 0.06 M Sn4+. Although an increase in calcination temperature led to the formation of Ir1-x-ySnxTiyO2 triple oxide with a slightly lower catalytic activity for oxygen evolution, the anode calcined at 450 °C showed the highest protectiveness. |
| Databáze: | OpenAIRE |
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