Afficher la couverture '<i>In Situ</i> Synthesis of Co<sub>3</sub>O<sub>4</sub>/CoFe<sub>2</sub>O<sub>4</sub> Derived from a Metal–Organic Framework on Nickel Foam: High-Performance Electrocatalyst for Water Oxidation | Nozari-Asbemarz, Mehran' en grand format
/5

0 avis

In Situ Synthesis of Co3O4/CoFe2O4 Derived from a Metal–Organic Framework on Nickel Foam: High-Performance Electrocatalyst for Water Oxidation

Archive ouverte : Article de revue

Nozari-Asbemarz, Mehran | Amiri, Mandana | Khodayari, Ali | Bezaatpour, Abolfazl | Nouhi, Sima | Hosseini, Pouya | Wark, Michael | Boukherroub, Rabah | Szunerits, Sabine

Edité par HAL CCSD ; ACS

International audience. Co3O4/CoFe2O4 decorated on nickel foam (NF/Co3O4/CoFe2O4) was synthesized from a metal–organic framework by a solvothermal approach using nicotinic acid as an organic linker followed by annealing at 500 °C. The electrochemical activity of NF/Co3O4/CoFe2O4 for the oxygen evolution reaction (OER) was assessed in alkaline medium. Under basic conditions (pH > 10), the composite electrode revealed enhanced electrocatalytic OER activity requiring an overpotential of 215 mV versus RHE to reach 10 mA cm–2 with a Tafel slope of 90 mV dec–1. The enhanced OER activity was ascribed to the presence of Co3+ and Fe3+ in the octahedral sites of Co3O4 and CoFe2O4, respectively, and their synergic effect in Co3O4/CoFe2O4. This anode showed a stable current density of about 160 mA cm–2 for 20 h; the same Co3O4/CoFe2O4/NF anode was applied for several OER experiments without loss of activity.

Consulter en ligne

Suggestions

Du même auteur

Non-enzymatic electrochemical cholesterol sensor based on strong host-guest...

Archive ouverte: Article de revue

Jahani, Negin | 2021-11

International audience. Advances in materials science have accelerated the development of diagnostic tools with the last decade witnessing the development of enzyme-free sensors, owing to the improved stability, low...

[1+1] Copper(II) macrocyclic Schiff base complex on rGO as a photocatalyst ...

Archive ouverte: Article de revue

Ghalebin, Saeed Nasiri | 2021-04-15

International audience. In this work, [1 + 1] macrocyclic Copper(II) Schiff base complex ([CuL](NO3)2.H2O) was synthesized and grafted on reduced graphene oxide successfully. The novel prepared sample was characteri...

Cathodic pre-polarization studies on the carbon felt/KOH interface: An effi...

Archive ouverte: Article de revue

Ifires, M. | 2021-04-10

International audience. The recent decades have witnessed a booming research effort on the development of highly active electrode materials in electrocatalysis with the aim to replace the commonly used noble metal-b...

Du même sujet

Reading History of Science as a Physics and Mathematics Framework for Newto...

Archive ouverte: Communication dans un congrès

Pisano, Raffaele | 2017-04-19

International audience

On Mechanics and Thermodynamics Analogies in History of Physics-Mathematics...

Archive ouverte: Communication dans un congrès

Pisano, Raffaele | 2017-05-12

International audience

On the epistemic interplay between physics and mathematics such as a dynami...

Archive ouverte: Communication dans un congrès

Pisano, Raffaele | 2017-06-12

International audience

A CMOS Compatible Thermoelectric Device made of Crystalline Silicon Membran...

Archive ouverte: Article de revue

Bah, Thierno-Moussa | 2022-12-10

International audience. Herein, we report the use of nanostructured crystalline silicon as a thermoelectric material and its integration into thermoelectric devices. The proof-of-concept relies on the partial suppre...

Effet de l'angle de charge sur les harmoniques d'efforts magnétiques dans l...

Archive ouverte: Communication dans un congrès

Le Besnerais, Jean | 2016-06-07

International audience. Cet article étudie l'effet de l'angle de charge sur les efforts harmoniques de Maxwell (tangentiels et radiaux) et les bruits et vibrations d'origine magnétique dans deux machines synchrones ...

Further investigation of convolutional neural networks applied in computati...

Archive ouverte: Article de revue

Gong, Ruohan | 2022-04-07

International audience. Convolutional neural networks (CNN) have shown great potentials and have been proven to be an effective tool for some image-based deep learning tasks in the field of computational electromagn...

Chargement des enrichissements...