Over-Potential Deposited Hydrogen (Hopd) as Terminating Agent for Platinum and Gold Electro(co)Deposition
| Autor: | Juntaro Seki, Kensaku Kodama, Yu Morimoto, Kousuke Kitazumi, Sebastian Proch, Shuhei Yoshino |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Hydrogen Catalyst support Oxide chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Chemical engineering Monolayer 0210 nano-technology Platinum Titanium |
| Zdroj: | Electrocatalysis. 10:591-603 |
| ISSN: | 1868-5994 1868-2529 |
| DOI: | 10.1007/s12678-019-00551-4 |
| Popis: | An “approximate” Pt monolayer is a desirable morphology for oxygen reduction reaction (ORR) catalysts with high mass activity. Such structures can, reliably, be synthesized on gold by monolayer-limited CO- or over-potential deposited hydrogen (Hopd)-terminated Pt electrodeposition. On a more appropriate catalyst support for proton-exchange membrane fuel cells (PEMFCs), namely, the native oxide on metallic titanium (TiOx/Ti), the synthesis is disrupted by preadsorption of the monolayer-limiting agent. The role of auxiliary NaCl during Hopd-terminated Pt electrodeposition (chloride-assisted Hopd termination) on TiOx/Ti is investigated and discloses effects similar to CO observed previously. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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