Evaluation of Ag as an Active Direct Ethanol Fuel Cell Electrode Catalyst Prepared by Pulsed Current Electrodeposition Technique
Nassif, N., Abdel Hamid, Z., Ghayad, I., kamal, Y., Ismail, A. (2019). Evaluation of Ag as an Active Direct Ethanol Fuel Cell Electrode Catalyst Prepared by Pulsed Current Electrodeposition Technique. EKB Journal Management System, 62(9), 1625-1636. doi: 10.21608/ejchem.2019.7196.1591
Nabil Nassif; Zeinab Abdel Hamid; Ibrahim Mohamed Ghayad; yasser kamal; Amal Ismail. "Evaluation of Ag as an Active Direct Ethanol Fuel Cell Electrode Catalyst Prepared by Pulsed Current Electrodeposition Technique". EKB Journal Management System, 62, 9, 2019, 1625-1636. doi: 10.21608/ejchem.2019.7196.1591
Nassif, N., Abdel Hamid, Z., Ghayad, I., kamal, Y., Ismail, A. (2019). 'Evaluation of Ag as an Active Direct Ethanol Fuel Cell Electrode Catalyst Prepared by Pulsed Current Electrodeposition Technique', EKB Journal Management System, 62(9), pp. 1625-1636. doi: 10.21608/ejchem.2019.7196.1591
Nassif, N., Abdel Hamid, Z., Ghayad, I., kamal, Y., Ismail, A. Evaluation of Ag as an Active Direct Ethanol Fuel Cell Electrode Catalyst Prepared by Pulsed Current Electrodeposition Technique. EKB Journal Management System, 2019; 62(9): 1625-1636. doi: 10.21608/ejchem.2019.7196.1591

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

Egyptian Journal of Chemistry
Article 5, Volume 62, Issue 9, September 2019, Page 1625-1636  XML PDF (1.66 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2019.7196.1591
View on SCiNiTO View on SCiNiTO
Authors
Nabil Nassif1; Zeinab Abdel Hamid email 2; Ibrahim Mohamed Ghayad1; yasser kamal3; Amal Ismail3
1CMRDI
2Central metallurgical research and development institute
3Monifiaa University
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.
Keywords
Pulsed current electrodeposition; Electrocatalytic activity; Nanoparticles; Ag deposition; fuel cells
Statistics
Article View: 474
PDF Download: 341