Journal
NEW JOURNAL OF CHEMISTRY
Volume 44, Issue 2, Pages 580-585Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nj05550a
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Funding
- National Natural Science Foundation of China [21673202, 21922202]
- Qing Lan Project
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Yangzhou University International Academic Exchange Fund
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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.
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