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

被引：19

作者：

Abidat, I. ^{[1
]}

Cazayus, E. ^{[2
]}

Loupias, L. ^{[1
]}

Morais, C. ^{[1
]}

Comminges, C. ^{[1
]}

Napporn, T. W. ^{[1
]}

Portehault, D. ^{[2
]}

Durupthy, O. ^{[2
]}

Mamede, A-S. ^{[3
]}

Chaneac, C. ^{[2
]}

Lamonier, J. -F. ^{[3
]}

Habrioux, A. ^{[1
]}

Kokoh, K. B. ^{[1
]}

机构：

[1] Univ Poitiers, IC2MP, CNRS, UMR 7285, F-86073 Poitiers 9, France

[2] Sorbonne Univ, CNRS, Coll France, Lab Chim Matiere Condensee Paris, F-75005 Paris, France

[3] Univ Lille, CNRS, UMR 8181, ENSCL,Univ Artois,UCCS,Cent Lille, F-59000 Lille, France

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2019年 / 166卷 / 04期

关键词：

GRAPHENE OXIDE; HIGH-PERFORMANCE; RAMAN-SPECTRUM; REDUCTION; EVOLUTION; NANOPARTICLES; EFFICIENT; GRAPHITE; NANOCOMPOSITE; COMPOSITES;

D O I：

10.1149/2.0031904jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

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. (C) 2019 The Electrochemical Society.

引用

页码：H94 / H102

页数：9

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