Co3O4/rGO Catalysts for Oxygen Electrocatalysis: On the Role of the Oxide/Carbon Interaction
Year: 2019
Type: article
Abstract: The reduction degree of graphene oxide substrate governs the activity and stability of Co 3 O 4 /rGO nanocomposites toward oxygen reduction reaction and oxygen evolution reaction. In this work, Co 3 O 4 nanoparticles with narrow size distribution were uniformly deposited onto graphene oxide materials with different reduction degrees, by using a microwave-assisted hydrothermal method. The physicochemical characterization of these nanocomposites indicates that oxygenated groups grafted onto a reduced graphene oxide surface allow creating strong interactions between the carbon-based substrate and Co 3 O 4 nanocrystals. The obtained results denote that the electrocatalytic activity and stability of these nanocomposites toward the ORR and OER depend on the entanglement between the strength of the carbon/oxide interaction and the electronic conductivity of the substrate.
DOI: 10.1149/2.0031904jes
Institutions: Centre National de la Recherche Scientifique, Université de Poitiers, Institut de Chimie des Milieux et des Matériaux de Poitiers, Collège de France, Sorbonne Université, Chimie de la Matière Condensée de Paris, École Nationale Supérieure de Chimie de Lille, Unité de Catalyse et Chimie du Solide, Centrale Lille Institut
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2913166124