Fabrication of high performance carbon-supported ternary Pd-Cu-Fe electrocatalysts for formic acid electrooxidation via partly galvanic sacrifice of tunable binary Cu-Fe alloy templates
| Autor: | Baoyun Yu, Wenpeng Li, Wenjuan Wen, Changshuo Liu, Dandan Hou, Yang Yang |
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| Rok vydání: | 2016 |
| Předmět: |
Formic acid fuel cell
Materials science Formic acid General Chemical Engineering Alloy Inorganic chemistry chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy engineering 0210 nano-technology Ternary operation Carbon |
| Zdroj: | Electrochimica Acta. 196:223-230 |
| ISSN: | 0013-4686 |
| Popis: | Carbon loaded Pd-Cu-Fe catalysts (Pd-Cu-Fe/C) were fabricated with a novel strategy of partly etching carbon loaded tunable binary Cu-Fe alloy templates (Cu9Fe1, Cu8Fe2, Cu7Fe3) with Pd2+. The obtained Pd-Cu-Fe catalysts started from all the three templates showed better performance for formic acid oxidation than Pd and Pt. Compared with Pd/C catalysts, the anodic peak potential at the catalysts started from Cu9Fe1, Cu8Fe2 and Cu7Fe3 shifted toward negative value by 51 mV, 88 mV and 110 mV, respectively. Among them, catalyst started from Cu7Fe3 template exhibited the highest catalytic activity and a high stability, suggesting that it is a good candidate for the formic acid fuel cell. The characteristics of the Pd-Cu-Fe/C ternary catalysts were correlated using X-ray diffraction analysis, X-ray photoelectron spectroscopy, inductively coupled plasma-atomic emission spectrometry, energy dispersive spectrometer, transmission electron microscopy, and electrochemical measurements. |
| Databáze: | OpenAIRE |
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