Influence of the preparation method on Pt3Cu/C electrocatalysts for the oxygen reduction reaction
| Autor: | Ildiko Peter, Reza Alipour Moghadam Esfahani, Alessandro Hugo Monteverde Videla, Stefania Specchia |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
oxygen reduction reaction
chemical reduction Chemistry General Chemical Engineering Alloy Inorganic chemistry Rotating disk electrode Pt3Cu alloy lattice constant Carbon nanotube engineering.material Catalysis law.invention Solvent Sodium borohydride chemistry.chemical_compound X-ray photoelectron spectroscopy law Electrochemistry engineering Atomic ratio |
| Popis: | Pt 3 Cu nanoparticles are deposited on multi wall carbon nanotubes (MWCNT) according to three different types of synthesis: a thermal reduction using an aprotic solvent (“thermal method”, TM), a chemical reduction using sodium borohydride (“chemical method”, CM), and an alloy method (“alloy method”, AM). The catalysts are characterized by means of BET, FESEM, EDX, XRD, ICP-MS and XPS analyses. The obtained catalysts display a Pt loading of 19.6–19.8 wt.%, with a Pt/Cu atomic ratio of 2.60–2.80. The electrocatalytic activity towards ORR is assessed by RDE in acid conditions (0.1 M HClO 4 ). The best activity belongs to the Pt 3 Cu/C catalyst prepared by chemical reduction method (–10.300 mA mg −1 Pt ) at 900 mV, IR corrected. |
| Databáze: | OpenAIRE |
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