Boosting reversible oxygen electrocatalysis with enhanced interfacial pyridinic-N-Co bonding in cobalt oxide/mesoporous N-doped graphene hybrids

A hybrid electrocatalyst CoO/r-NLG with a high density of pyridinic-N-Co bonds was synthesized via pyrolysis treatments of a mixture of cobalt iron precursors and laser-induced mesoporous N-doped graphene, which achieved superb reversible ORR/OER activities, offering a low efficiency loss (Δ E ) of...

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Bibliographic Details
Published in:Nanoscale 2018-12, Vol.1 (47), p.2214-22147
Main Authors: Feng, Ting, Zhao, Xue-Ru, Dong, Cun-Ku, Liu, Hui, Du, Xi-Wen, Yang, Jing
Format: Article
Language:English
Subjects:
Cobalt oxides
Graphene
Pyrolysis
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Summary:A hybrid electrocatalyst CoO/r-NLG with a high density of pyridinic-N-Co bonds was synthesized via pyrolysis treatments of a mixture of cobalt iron precursors and laser-induced mesoporous N-doped graphene, which achieved superb reversible ORR/OER activities, offering a low efficiency loss (Δ E ) of 0.635 V in a 1.0 M KOH electrolyte. A hybrid catalyst CoO/mesoporous N-doped graphene with enhanced pyridinic-N-Co bonding is designed and it exhibits superior bi-functional ORR/OER performance.
ISSN:2040-3364
2040-3372
DOI:10.1039/c8nr07945e