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Preparation and characterization of palladium-nickel on graphene oxide support as anode catalyst for alkaline direct ethanol fuel cell
- Preparation and characterization of palladium-nickel on graphene oxide support as anode catalyst for alkaline direct ethanol fuel cell
- Tan, JL[Tan, Joshua L.]; De Jesus, AM[De Jesus, Arvee M.]; Chua, SL[Chua, Stephanie L.]; Sanetuntikul, J[Sanetuntikul, Jakkid]; Shanmugam, S[Shanmugam, Sangaraju]; Tongol, BJV[Tongol, Bernard John. V.]; Kim, H[Kim, Hasuck]
- DGIST Authors
- Sanetuntikul, J[Sanetuntikul, Jakkid]; Shanmugam, S[Shanmugam, Sangaraju]; Kim, H[Kim, Hasuck]
- Issue Date
- Applied Catalysis A: General, 531, 29-35
- Article Type
- Alkaline Fuel Cells; Anion Exchange Membrane; Anode Catalyst; Anode Catalysts; Anodes; Carbon; Carbon Black; Catalyst Activity; Catalyst Supports; Catalysts; Catalytic Oxidation; Chronoamperometry; Cyclic Voltammetry; Direct Ethanol Fuel Cells (DEFC); Electrocatalysis; Electrocatalytic Activity and Stability; Electrodes; Ethanol; Ethanol Fuels; Ethanol Oxidation Reaction; Exfoliated Graphene; Fuel Cells; Graphene; Graphene Oxide; Graphene Oxides; High Resolution Transmission Electron Microscopy; Ion Exchange Membranes; Maximum Power Density; Nickel; Particle Size; PdNi; Transmission Electron Microscopy; X Ray Photoelectron Spectroscopy
- 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. © 2016 Elsevier B.V.
- Elsevier B.V.
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