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

Yanan Li,   Jie Han,   Zhilong Xu  and  Rong Guo  

Abstract

Recently, the development of non-precious metal electrocatalysts for effective oxygen reduction reaction (ORR) has become the 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 the 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.

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Publication details

The article was received on 06 Nov 2019, accepted on 04 Dec 2019 and first published on 04 Dec 2019


Article type: Paper
DOI: 10.1039/C9NJ05550A
New J. Chem., 2019, Accepted Manuscript

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

    Y. Li, J. Han, Z. Xu and R. Guo, New J. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9NJ05550A

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