A novel octahedral MnO/RGO composite prepared by thermal decomposition as a noble-metal free electrocatalyst for ORR

Octahedral MnO/reduced graphene oxide (RGO) composite was synthesized by thermal decomposition method and characterized by XRD, Raman, XPS, TGA/DSC, TEM and SEM. The analysis results show that GO was reduced to RGO, and the octahedral MnO nanoparticles disperse on the RGO sheet by thermal decomposit...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science 2017-06, Vol.52 (11), p.6656-6669
Main Authors: Wu, Qiuling, Jiang, Meiling, Zhang, Xiaofeng, Cai, Jiannan, Lin, Shen
Format: Article
Language:English
Subjects:
Batteries
Catalysis
Catalysts
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Comparative analysis
Crystallography and Scattering Methods
Decomposition
Fuel cells
Graphene
Manganese oxides
Materials Science
Nanoparticles
Noble metals
Original Paper
Oxygen reduction reactions
Polymer Sciences
Solid Mechanics
Thermal decomposition
X ray photoelectron spectroscopy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Octahedral MnO/reduced graphene oxide (RGO) composite was synthesized by thermal decomposition method and characterized by XRD, Raman, XPS, TGA/DSC, TEM and SEM. The analysis results show that GO was reduced to RGO, and the octahedral MnO nanoparticles disperse on the RGO sheet by thermal decomposition process. It is important that the as-prepared composite exhibits excellent electrocatalytic performance for oxygen reduction reaction. The onset potential of the octahedral MnO/RGO composite is about 100 and 200 mV positive-shifted compared with that of MnO and RGO, respectively. The current density of O 2 reduction for the MnO/RGO composite is also much higher than that of MnO and RGO, respectively. In addition, the composite shows better stability and tolerance ability toward CH 3 OH and CO poisoning than that of commercial Pt-based catalyst. The enhanced electrocatalytic performance of octahedral MnO/RGO may make it available to be an efficient and cheap noble-metal free cathodic catalyst for fuel cells and metal–air batteries.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-017-0901-4