Titre :

Electrosynthesis of eco-friendly electrocatalyst based nickel-copper bimetallic nanoparticles supported on poly-phenylenediamine with highest current density and early ethanol oxidation onset potential

Auteur(s) :

Chemchoub, Sanaa [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Université Hassan II [Casablanca] [UH2MC]
El Attar, Anas [Auteur]
Université Hassan II [Casablanca] [UH2MC]
Oularbi, Larbi [Auteur]
Université Hassan II [Casablanca] [UH2MC]
Younssi, Saad Alami [Auteur]
Université Hassan II [Casablanca] [UH2MC]
Bentiss, Fouad [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Université Chouaib Doukkali [UCD]
Jama, charafeddine [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
El Rhazi, Mama [Auteur]
Université Hassan II [Casablanca] [UH2MC]
Bentiss, Fouad [Auteur]

Titre de la revue :

International Journal of Hydrogen Energy

Nom court de la revue :

International Journal of Hydrogen Energy

Éditeur :

Elsevier BV

Date de publication :

2022-09

ISSN :

0360-3199

Mot(s)-clé(s) en anglais :

Poly-phenylenediamine
Nickel nanoparticle
Copper nanoparticle
Ethanol electrooxidation
Direct ethanol fuel cell

Discipline(s) HAL :

Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [en]

Bimetallic catalysts have been investigated as the most efficient materials to accelerate the chemical transformations at the anode in Direct Ethanol Fuel Cells. A comparative study is presented here to synthesize Ni–Cu ...
Lire la suite >Bimetallic catalysts have been investigated as the most efficient materials to accelerate the chemical transformations at the anode in Direct Ethanol Fuel Cells. A comparative study is presented here to synthesize Ni–Cu bimetallic nanoparticles for the ethanol oxidation reaction on three conducting polymers: poly-ortho-phenylenediamine, poly-meta-phenylenediamine, and poly-para-phenylenediamine. X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Electrochemical Impedance Spectroscopy (EIS) were used to analyze the modified electrodes. A series of bimetallic Ni–Cu nanoparticles with tunable ratios were successfully synthesized by simply changing the concentrations of Nickel and Copper. It has been confirmed that the best Ni/Cu molar ratio was 25% in the aspect of catalytic performance. The electrocatalyst exhibited an excellent catalytic activity with an anodic current of 70.5 mA cm−2 at the lowest onset potential of 0.39 V with impressive stability. Ni4Cu1/PpPD should be considered as a good alternative to noble metal anode catalyst.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Procédés de Recyclage et de Fonctionnalisation (PReF)

Date de dépôt :

2022-10-17T10:16:03Z
2022-10-19T07:00:39Z