An advanced and efficient Co 3 O 4 /C nanocomposite for the oxygen evolution reaction in alkaline media.

Autor: Mugheri AQ; Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan zaffar.ibhupoto@usindh.edu.pk., Tahira A; Department of Science and Technology, Campus Norrkoping, Linkoping University SE-60174 Norrkoping Sweden., Aftab U; Mehran University of Engineering and Technology 7680 Jamshoro Sindh Pakistan., Abro MI; Mehran University of Engineering and Technology 7680 Jamshoro Sindh Pakistan., Mallah AB; Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan zaffar.ibhupoto@usindh.edu.pk., Memon GZ; Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan zaffar.ibhupoto@usindh.edu.pk., Khan H; Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan zaffar.ibhupoto@usindh.edu.pk., Abbasi MA; Institute of Physics, University of Sindh Jamshoro 76080 Sindh Pakistan., Halepoto IA; Institute of Physics, University of Sindh Jamshoro 76080 Sindh Pakistan., Chaudhry SR; University of Engineering and Technology Lahore Pakistan., Ibupoto ZH; Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan zaffar.ibhupoto@usindh.edu.pk.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2019 Oct 23; Vol. 9 (59), pp. 34136-34143. Date of Electronic Publication: 2019 Oct 23 (Print Publication: 2019).
DOI: 10.1039/c9ra07224a
Abstrakt: 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 (Co 3 O 4 ). 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.
Competing Interests: Authors declare no conflict of interest in this research work.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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