29072

Evaluation of Ag as an Active Direct Ethanol Fuel Cell Electrode Catalyst Prepared by Pulsed Current Electrodeposition Technique

Article

Last updated: 01 Jan 2025

Subjects

-

Tags

Electrochemistry

Abstract

Pulsed current electrodeposition of silver on graphite from non-cyanide bath has been employed. The influence of pulse parameters on electrocatalytic activity of Ag catalyst for ethanol oxidation in alkaline media have been evaluated by field emission scanning electron microscopy (FESEM), X- ray diffraction (XRD) and cyclic voltammetry (CV). The results reveal that the optimum condition can be obtained at 60 % duty cycle, 50 mAcm-2 average current density, 10 min. deposition time, and 10 Hz pulse frequency. The electrocatalytic activity and stability of Ag/C electrode prepared, at corresponding optimum condition, by pulse current (PC) and direct current (DC) electrodeposition for ethanol oxidation in alkaline media have been compared. The results illustrate that PC silver catalyst exhibits higher oxidation peak current density, higher surface coverage, higher poisoning tolerance as well as smaller charge transfer resistance, in alkaline ethanol solution, than that prepared by DC technique and thus can be used as an active anode material for direct ethanol fuel cell at a reduced cost.

DOI

10.21608/ejchem.2019.7196.1591

Keywords

Pulsed current electrodeposition, Electrocatalytic activity, Nanoparticles, Ag deposition, fuel cells

Authors

First Name

Nabil

Last Name

Nassif

MiddleName

-

Affiliation

CMRDI

Email

nabilnassif01@hotmail.com

City

-

Orcid

-

First Name

Zeinab

Last Name

Abdel Hamid

MiddleName

-

Affiliation

Central metallurgical research and development institute

Email

forzeinab@yahoo.com

City

-

Orcid

-

First Name

Ibrahim

Last Name

Ghayad

MiddleName

Mohamed

Affiliation

CMRDI

Email

ighayad@yahoo.com

City

Cairo

Orcid

-

First Name

yasser

Last Name

kamal

MiddleName

-

Affiliation

Monifiaa University

Email

ykabdelmonem@gmail.com

City

-

Orcid

-

First Name

Amal

Last Name

Ismail

MiddleName

-

Affiliation

Monifiaa University

Email

amalismail523@gmail.com

City

-

Orcid

-

Volume

62

Article Issue

9

Related Issue

7302

Issue Date

2019-09-01

Receive Date

2019-01-13

Publish Date

2019-09-01

Page Start

1,625

Page End

1,636

Print ISSN

0449-2285

Online ISSN

2357-0245

Link

https://ejchem.journals.ekb.eg/article_29072.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=29072

Order

5

Type

Original Article

Type Code

297

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

https://ejchem.journals.ekb.eg/

MainTitle

Evaluation of Ag as an Active Direct Ethanol Fuel Cell Electrode Catalyst Prepared by Pulsed Current Electrodeposition Technique

Details

Type

Article

Created At

22 Jan 2023