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In relation to this article, we declare that there is no conflict of interest.
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Received April 15, 2019
Accepted July 9, 2019
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Room-temperature synthesis of Co3O4 nanoparticles self-assembled into meso/nanoporous microstructures and their application

Department of Nanoscience and Engineering, Center for Nano Manufacturing, Inje University, 197 Inje-ro, Gimhae, Gyeongnam-do 50834, Korea 1Department of Chemical Engineering, Kyung Hee University, Yongin 17104, Korea
wskim@khu.ac.kr
Korean Journal of Chemical Engineering, September 2019, 36(9), 1536-1542(7), 10.1007/s11814-019-0338-3
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Abstract

Nano/mesoporous transition metal oxides have attracted extensive attention because of their distinctive morphology and properties, along with exhibiting better performance in many applications. We employed a simple modified version of the one-pot co-precipitation method at room temperature to synthesize three-dimensional mesoporous microstructures obtained by the self-aggregation of Co3O4 nanoparticles, which is sparse in the literature. The obtained structures were used as electrode materials for electrochemical capacitors or supercapacitors. The as-obtained Co3O4 electrode exhibited acceptable specific capacitances of 400 and 165 Fㆍg-1 at applied current densities of 1 and 10 Aㆍg-1, respectively, with over 99% of capacity retention after 4000 cycles.

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