One –step synthesis of PdCo alloy nanoparticles decorated on reduced grahene oxide as an Electro-catalyst for Oxygen Reduction Reaction in Passive Direct Methanol Fuel Cells
Publish place: Third Hydrogen and Fuel Cell Conference
Publish Year: 1394
نوع سند: مقاله کنفرانسی
زبان: English
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H2FC03_064
تاریخ نمایه سازی: 19 خرداد 1396
Abstract:
We report a Pd-Co (3:1)/graphene oxide (Pd3 Co /GO) catalyst through a one-step strategy . GO is synthesized from graphite electrodes using ionic liquid-assisted electrochemical exfoliation. Controllable GO-supported Pd3Co electrocatalystis then was reduced by ethylene glycol as a stabilizing agent to prepare highly dispersed PdConanoparticles on carbon graphene oxide to be used as oxygene reduction reaction in passive direct methanol fuel cell (DEFC) catalysts. The performance of these electrodes in the ORR was measured with cyclic voltammetry (CV), linear sweep voltammetry (LSV),electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), inductive coupled plasma (ICP), X-ray diffraction (XRD) and scanning electron microscopycoupled to energy dispersive X-ray (SEM–EDX). Since the Pd 3 Co/GO alloy electrocatalysts are inactive for the adsorption and oxidation of methanol, it can act as amethanol-tolerant ORR catalyst in a direct methanol fuel cell (DMFC).A membraneelectrodeassembly (MEA) has been prepared by employing of the Pd 3 Co/GO as a cathode for passive direct methanol fuel cell and characterized by polarization curves and impedance diagrams. A better performance was obtained for the cell using Pd3Co/GO (2.66 mW cm–2)compared to Pd/GO (1.75 mW cm–2) and Pt/C-Electrochem (1.20 mW cm–2) as cathode in the DMFC
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Authors
Karim Kakaei
Department of Physical Chemistry and Nano chemistry, Faculty of Science, University Of Maragheh, P.O. Box. 55181-83111, Maragheh, Iran
Amin Balavandi
Department of Physical Chemistry and Nano chemistry, Faculty of Science, University Of Maragheh, P.O. Box. 55181-83111, Maragheh, Iran
Hakimeh Javan
Department of Physical Chemistry and Nano chemistry, Faculty of Science, University Of Maragheh, P.O. Box. 55181-83111, Maragheh, Iran
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