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http://dx.doi.org/10.5695/JSSE.2022.55.1.32

Characteristics of nickel cobalt oxide (NiCo2O4) nanosheet electrodes prepared by hydrothermal synthesis and heat treatment  

Lee, Seokhee (School of Materials Science and Engineering, Pusan National University)
Cha, Hyunjin (School of Materials Science and Engineering, Pusan National University)
Lee, Sangwoon (School of Materials Science and Engineering, Pusan National University)
Kim, Juna (School of Materials Science and Engineering, Pusan National University)
Park, Jeonghwan (Division of Materials Science and Engineering, Silla University)
Hwang, Donghyun (Division of Materials Science and Engineering, Silla University)
Son, Young Guk (School of Materials Science and Engineering, Pusan National University)
Publication Information
Journal of the Korean institute of surface engineering / v.55, no.1, 2022 , pp. 32-37 More about this Journal
Abstract
In a carbon-zero social atmospher, research is underway to reduce the use of fossil fuels. Interest in cleaner energy sources and their storage system is growing, and among them, research on effective energy storage is being actively conducted. Energy storage system(ESS) can be divided into secondary batteries, fuel cells, and capacitors, and the superiority of energy density of secondary batteries has a dominent influence on the ESS market. However, as problems with secondary batteries, charge/discharge speed, safety, and deterioration of electrodes are being highlighted. In this study, an electrode for supercapacitor with superior charge/discharge speed and specific capacitance is manufactured. The manufactured spinel nickel cobalt electrodes had specific capacitances of 1018.8 F/g, 690.8 F/g, and 475.1 F/g at 1 A/g in 1 M KOH electrolyte, and shows a performance retention rate of 77.48%, 63.30%, and 58.16% after 2000cycles at 7 A/g.
Keywords
$NiCo_2O_4$; Hydrothermal synthesis; Supercapacitor;
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Times Cited By KSCI : 2  (Citation Analysis)
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