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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Synthesis of nanoporous carbon-cobalt-oxide hybrid electrocatalysts by thermal conversion of metal-organic frameworks
Chemistry - A European Journal, Volume 20, No. 15, Year 2014
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Description
Nanoporous carbon-cobalt-oxide hybrid materials are prepared by a simple, two-step, thermal conversion of a cobalt-based metal-organic framework (zeolitic imidazolate framework-9, ZIF-9). ZIF-9 is carbonized in an inert atmosphere to form nanoporous carbon-metallic-cobalt materials, followed by the subsequent thermal oxidation in air, yielding nanoporous carbon-cobalt-oxide hybrids. The resulting hybrid materials are evaluated as electrocatalysts for the oxygen-reduction reaction (ORR) and the oxygen-evolution reaction (OER) in a KOH electrolyte solution. The hybrid materials exhibit similar catalytic activity in the ORR to the benchmark, commercial, Pt/carbon black catalyst, and show better catalytic activity for the OER than the Pt-based catalyst. Hybrid-material transformers: Thermal conversion of a cobalt-based metal-organic framework (ZIF-9) yields nanoporous carbon-cobalt-oxide hybrid electrocatalysts (see figure). The resulting hybrid materials exhibit excellent catalytic activities comparable to the benchmark catalysts for both oxygen reduction and evolution reactions, and accordingly may be candidate catalysts for fuel-cell applications. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Authors & Co-Authors
Chaikittisilp, Watcharop
Japan, Tsukuba
National Institute for Materials Science
Torad, Nagy L.K.
Japan, Tsukuba
National Institute for Materials Science
Japan, Tokyo
Waseda University
Li, Cuiling
Japan, Tsukuba
National Institute for Materials Science
Imura, Masataka
Japan, Tsukuba
National Institute for Materials Science
Suzuki, Norihiro
Japan, Tsukuba
National Institute for Materials Science
Ishihara, Shinsuke
Japan, Tsukuba
National Institute for Materials Science
Ariga, Katsuhiko
Japan, Tsukuba
National Institute for Materials Science
Japan, Kawaguchi
Japan Science and Technology Agency
Yamauchi, Yusuke
Japan, Tsukuba
National Institute for Materials Science
Japan, Tokyo
Waseda University
Japan, Kawaguchi
Japan Science and Technology Agency
Statistics
Citations: 244
Authors: 8
Affiliations: 3
Identifiers
Doi:
10.1002/chem.201304404
ISSN:
09476539
Research Areas
Environmental