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Hybrid shells of N-doped carbon encapsulated by MnO nanoparticles as oxygen reduction reaction electrocatalysts†

Yanan Li,a   Jie Han, ORCID logo *a   Zhilong Xua  and  Rong Guo ORCID logo *a  
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* Corresponding authors

a School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, P. R. China
E-mail: hanjie@yzu.edu.cn, guorong@yzu.edu.cn

Abstract

Recently, the development of non-precious metal electrocatalysts for effective oxygen reduction reaction (ORR) has become a research hotspot. Herein, a facile and effective strategy is explored to develop non-precious electrocatalysts of hybrid shells of N-doped carbon (N-carbon) encapsulated by MnO (denoted as MnO/N-carbon/MnO), which can be recognized as efficient and durable electrocatalysts for ORR. The MnO2/N-carbon/MnO2 hybrid shells were synthesized via the redox reaction between poly(o-phenylenediamine) (PoPD) hollow microspheres and KMnO4, followed by a calcination process to form MnO/N-carbon/MnO hybrid shells. The cyclic voltammetry (CV) and linear scanning voltammetry (LSV) proved that MnO/N-carbon/MnO(800) hybrid shells showed the best electrocatalytic activity for ORR. The hybrid structure of the material and the synergy between MnO and N-carbon contribute to the improved electrocatalytic activity for ORR.

Graphical abstract: Hybrid shells of N-doped carbon encapsulated by MnO nanoparticles as oxygen reduction reaction electrocatalysts

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Article information

Submitted
06 Nov 2019
Accepted
04 Dec 2019
First published
04 Dec 2019
New J. Chem., 2020,44, 580-585
Article type
Paper
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Hybrid shells of N-doped carbon encapsulated by MnO nanoparticles as oxygen reduction reaction electrocatalysts

Y. Li, J. Han, Z. Xu and R. Guo, New J. Chem., 2020, 44, 580
DOI: 10.1039/C9NJ05550A

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