期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 53, 页码 28847-28859出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.07.276
关键词
Palladium nanoparticles; Electro-deposition technique; Doped nickel oxide; Ethanol electro-oxidation; Support materials
资金
- Bu-Ali Sina University, Hamedan, Iran [32-1716]
Electrocatalyst support materials play significant role in the performance, durability and commercialization of fuel cells. This research work describes the preparation of metal oxide (nickel oxide (NiO), cobalt (Co) and copper (Cu) doped NiO) support materials on meshed titanium (Ti) substrate via a simple electro-deposition method for their application as novel support material for palladium (Pd) catalyst. Field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) techniques are employed to study morphology, composition and structure of fabricated electrodes, respectively. The electrocatalytic performance of fabricated electrodes toward ethanol oxidation reaction (EOR) in alkaline solution is examined by the cyclic voltammetry (CV), chronoamperometry (CA) techniques. Low peak potential (-0.2 V), increased peak current density (62.54 mA cm(-2)) and large electrochemical active surface area (16.02 m(2) g(-1)) were remarkable properties of Pd/CueNiO/Ti electrode. The results of other electrochemical measurements, CO-striping voltammetry, long-term stability and electrochemical impedance spectroscopy (EIS) revealed that the Pd/CueNiO/Ti electrode has the privileged electrocatalytic performance for EOR relative to other prepared electrodes. Accordingly, the Pd/CueNiO/Ti can be considered as a hopeful electrode for ethanol electro-oxidation reaction in DEFCs. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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