Co3O4/rGO Catalysts for Oxygen Electrocatalysis: On the Role of the Oxide/Carbon Interaction - Sorbonne Université Access content directly
Journal Articles Journal of The Electrochemical Society Year : 2019

Co3O4/rGO Catalysts for Oxygen Electrocatalysis: On the Role of the Oxide/Carbon Interaction

Abstract

The reduction degree of graphene oxide substrate governs the activity and stability of Co3O4/rGO nanocomposites toward oxygen reduction reaction and oxygen evolution reaction. In this work, Co3O4 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 Co3O4 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.
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Dates and versions

hal-02342898 , version 1 (05-12-2023)

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I. Abidat, E. Cazayus, L. Loupias, C. Morais, C. Comminges, et al.. Co3O4/rGO Catalysts for Oxygen Electrocatalysis: On the Role of the Oxide/Carbon Interaction. Journal of The Electrochemical Society, 2019, 166 (4), pp.H94-H102. ⟨10.1149/2.0031904jes⟩. ⟨hal-02342898⟩
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