Assessing the Potential of Co-Pt Bronze for Electrocatalysis in Acidic Media
| Autor: | Noboru Taguchi, Yu Morimoto, Yuji Kamitaka |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
polymer electrolyte water electrolysis
oxygen evolution reaction catalysts Materials science Inorganic chemistry Oxide 02 engineering and technology 010402 general chemistry Electrochemistry Platinum nanoparticles Electrocatalyst lcsh:Chemical technology 01 natural sciences Catalysis Corrosion Metal lcsh:Chemistry chemistry.chemical_compound oxygen reduction reaction catalyst Aqua regia lcsh:TP1-1185 Physical and Theoretical Chemistry polymer electrolyte fuel cells 021001 nanoscience & nanotechnology mixed oxide 0104 chemical sciences chemistry lcsh:QD1-999 visual_art visual_art.visual_art_medium Mixed oxide 0210 nano-technology |
| Zdroj: | Catalysts, Vol 8, Iss 7, p 258 (2018) Catalysts Volume 8 Issue 7 |
| ISSN: | 2073-4344 |
| Popis: | An electron-conducting mixed oxide, Co-Pt bronze was synthesized and examined as a candidate for a highly durable electrocatalyst for both the polymer electrolyte fuel cells and electrolyzers. The motivation of this study comes from the fact that this material has not been studied as an electrocatalyst in acidic media, although past studies showed a high electronic conductivity and a high corrosion resistance. Co-Pt bronze without metallic Pt was obtained by solid-state synthesis and hot aqua regia rinsing. The OER activity was found to be among the highest as a material without Ir and Ru in acidic media, and it showed extremely high electrochemical stability in the OER potential range. Its oxygen reduction reaction (ORR) was obtained after potential cycles down to the hydrogen region, which formed a thin Pt metallic layer over the oxide. While its specific activity was not more than that of pure platinum nanoparticles, its durability against the potential cycles was much higher. |
| Databáze: | OpenAIRE |
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