Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5148374 | International Journal of Hydrogen Energy | 2017 | 8 Pages |
Abstract
Pt-CeO2 electrocatalysts were prepared on the multi-walled carbon nanotube (Pt-CeO2-MWCNT) by an electrochemical deposition process. First, CeO2 is electrodeposited on treated MWCNTs in the optimum deposition conditions. Then, the Pt nanoparticle is electrochemically deposited on CeO2/MWCNT electrode by applying a constant potential via chronoamperometry method. The electrocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). The electro-oxidation of ethanol (EOR) was studied at room temperature by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronoamperometry (CA) measurements. The onset potential of Pt-CeO2-MWCNT shifts to negative compared to the onset potential of Pt-MWCNT. The results indicating CeO2 could significantly enhance the stability and CO poisoning tolerance of the Pt for alkaline direct ethanol fuel cells (DEFC).
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Majid Sedighi, Abbas Ali Rostami, Ebrahim Alizadeh,