A Class of (Pd–Ni–P) Electrocatalysts for the Ethanol Oxidation Reaction in Alkaline Media
A class of Pd–Ni–P electrocatalysts are prepared for the ethanol electrooxidation reaction (EOR). X-ray diffraction and transmission electron microscope reveal that the synthesized Pd–Ni–P catalyst possesses a more amorphous structure with smaller particle sizes when compared with a Pd–Ni sample wit...
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| Published in: | ACS catalysis 2014-08, Vol.4 (8), p.2577-2586 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | eng |
| Online Access: | Get full text |
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| Summary: | A class of Pd–Ni–P electrocatalysts are prepared for the ethanol electrooxidation reaction (EOR). X-ray diffraction and transmission electron microscope reveal that the synthesized Pd–Ni–P catalyst possesses a more amorphous structure with smaller particle sizes when compared with a Pd–Ni sample without P and a control Pd black (Pd-blk) sample. The Pd–Ni–P catalyst contains double the number of electrocatalytically active sites (12.03%) compared with the Pd–Ni (6.04%) and Pd-blk (5.12%) samples. For the EOR, the Pd–Ni–P catalyst has the lowest onset potential (−0.88 V vs SCE), the most negative peak potential (−0.27 V vs SCE), and the highest EOR activity in 0.1 M KOH solution. Moreover, a 110 mV decrease in overpotential is observed for the EOR on the Pd–Ni–P catalyst compared with the Pd-blk catalyst. A Tafel slope of 60 mV/dec at low polarization potentials ( |
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| ISSN: | 2155-5435 2155-5435 |