Developing hierarchically porous MnOx/NC hybrid nanorods for oxygen reduction and evolution catalysis

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1039/C7GC00147A
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Name affiliation
  1. National Research Council Canada. Nanotechnology
FormatText
TypeArticle
Journal titleGreen Chemistry
ISSN1463-9262
1463-9270
Volume19
Issue12
Pages2793–2797
Abstract
Electrochemical oxygen reduction and evolution reactions (ORR and OER) play a vital role in the field of energy conversion and storage. The problem is that both processes are sluggish, requiring precious-metal catalysts. Here, starting from abundant precursors and using a simple synthesis approach, we report the preparation of a good bifunctional oxygen electro-catalyst: a composite nanorod of manganese oxides and nitrogen-doped carbon. This material has hierarchical porosity, facilitating the mass transfer within the electrode. The nitrogen-doped carbon forms contiguous 3D network, connecting the isolated MnOx nanoparticles and ensuring superior electrical conductivity. Importantly, the MnOx particles contain manganese of mixed oxidation states; aligned with the nitrogen-doped carbon, this hybrid is among the best non-noble-metal ORR/OER catalysts in alkaline media, outperforming even Pt and RuO2 catalysts.
Publication date
PublisherRoyal Society of Chemistry
LanguageEnglish
Peer reviewedYes
NPARC number23002697
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Record created2017-12-21
Record modified2020-03-16
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