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An advanced and efficient Co3O4/C nanocomposite for the oxygen evolution reaction in alkaline media
Univ Sindh Jamshoro, Pakistan.
Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics. Linköping University, Faculty of Science & Engineering.
Mehran Univ Engn and Technol, Pakistan.
Mehran Univ Engn and Technol, Pakistan.
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2019 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, RSC ADVANCES, Vol. 9, no 59, p. 34136-34143Article in journal (Refereed) Published
Abstract [en]

The design of efficient nonprecious catalysts for the hydrogen evolution reaction (HER) or the oxygen evolution reaction (OER) is a necessary, but very challenging task to uplift the water-based economy. In this study, we developed a facile approach to produce porous carbon from the dehydration of sucrose and use it for the preparation of nanocomposites with cobalt oxide (Co3O4). The nanocomposites were studied by the powder X-ray diffraction and scanning electron microscopy techniques, and they exhibited the cubic phase of cobalt oxide and porous structure of carbon. The nanocomposites showed significant OER activity in alkaline media, and the current densities of 10 and 20 mA cm(-2) could be obtained at 1.49 and 1.51 V versus reversible hydrogen electrode (RHE), respectively. The impedance study confirms favorable OER activity on the surface of the prepared nanocomposites. The nanocomposite is cost-effective and can be capitalized in various energy storage technologies.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2019. Vol. 9, no 59, p. 34136-34143
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-162343DOI: 10.1039/c9ra07224aISI: 000494684600006Scopus ID: 2-s2.0-85074490012OAI: oai:DiVA.org:liu-162343DiVA, id: diva2:1374060
Available from: 2019-11-28 Created: 2019-11-28 Last updated: 2019-12-04Bibliographically approved

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