Jump to main content
Jump to site search


Metallic cobalt modified MnO–C nanocrystalline composites as an efficient bifunctional oxygen electrocatalyst

Author affiliations

Abstract

Exploring non-noble-metal-based bifunctional oxygen electrocatalysts remains a challenge for renewable clean energy applications, including metal–air batteries and dual functionality regenerative fuel cells. Herein, a facile two-step rheological phase reaction strategy was proposed to synthesize metallic cobalt modified MnO–C nanocrystalline composites (Co/MnO–C) for efficiently catalyzing oxygen reduction reactions (ORR) and oxygen evolution reactions (OER). The resulting optimal catalyst, Co/MnO–C, exhibits comparable electrocatalytic properties and superior methanol tolerance relative to commercial platinum black catalyst towards ORR. Furthermore, the critical role of cobalt content on ORR catalytic activity was investigated. In addition, Co/MnO–C also displays remarkable OER activity with an overpotential of 385 mV. Importantly, the facile two-step rheological phase reaction strategy described in this work could provide new methodologies for the synthesis of transition-metal-based catalysts and also offers prospects in raising the ORR and OER activity for many different electrochemical energy technologies.

Graphical abstract: Metallic cobalt modified MnO–C nanocrystalline composites as an efficient bifunctional oxygen electrocatalyst

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Sep 2017, accepted on 30 Nov 2017 and first published on 01 Dec 2017


Article type: Paper
DOI: 10.1039/C7CY01957B
Citation: Catal. Sci. Technol., 2018, Advance Article
  •   Request permissions

    Metallic cobalt modified MnO–C nanocrystalline composites as an efficient bifunctional oxygen electrocatalyst

    W. Wang, H. Wang, Y. Yu, Z. Wu, M. Asif and H. Liu, Catal. Sci. Technol., 2018, Advance Article , DOI: 10.1039/C7CY01957B

Search articles by author

Spotlight

Advertisements