Preparation and characterization of palladium-nickel on graphene oxide support as anode catalyst for alkaline direct ethanol fuel cell
| Autor: | Jakkid Sanetuntikul, Joshua L. Tan, Stephanie L. Chua, Arvee de Jesus, Bernard John V. Tongol, Sangaraju Shanmugam, Hasuck Kim |
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| Rok vydání: | 2017 |
| Předmět: |
Graphene
Process Chemistry and Technology Inorganic chemistry Oxide chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Direct-ethanol fuel cell Electrocatalyst 01 natural sciences Catalysis 0104 chemical sciences law.invention chemistry.chemical_compound Catalytic oxidation chemistry Chemical engineering law Cyclic voltammetry 0210 nano-technology Palladium |
| Zdroj: | Applied Catalysis A: General. 531:29-35 |
| ISSN: | 0926-860X |
| DOI: | 10.1016/j.apcata.2016.11.034 |
| Popis: | A catalyst consisting of palladium – nickel supported on exfoliated graphene oxide (PdNi/EGO) composite was synthesized. The catalytic activity was tested for ethanol oxidation reaction (EOR) in half-cell using cyclic voltammetry (CV) and subsequently it was used as an anode material in a direct ethanol fuel cell (DEFC). Transmission Electron Microscopy showed the catalyst particles are uniformly dispersed on the surface of graphene oxide with the particle size ranging from 3 to 6 nm. X-ray Photoelectron Spectroscopy analysis of catalysts revealed that the surface consisting of mostly Pd, PdO, Ni(OH)2, and NiOOH. CV and chronoamperometry measurements demonstrated higher electrocatalytic activity and stability for PdNi/EGO in the alkaline medium than the unsupported PdNi and carbon black-supported PdNi (PdNi/C) catalysts. A single cell anion exchange membrane DEFC constructed with a PdNi/EGO anode catalyst showed a maximum power density of 16.6 m Wcm−2 at 50 °C, which is higher than the unsupported PdNi, PdNi/C, and commercial Pd/C catalyst. |
| Databáze: | OpenAIRE |
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