Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Characteristics of nickel cobalt oxide (NiCo2O4) nanosheet electrodes prepared by hydrothermal synthesis and heat treatment

수열합성법으로 제조된 니켈코발트산화물(NiCo2O4) 나노시트 전극의 특성

  • 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)
  • 이석희 (부산대학교 재료공학과) ;
  • 차현진 (부산대학교 재료공학과) ;
  • 이상운 (부산대학교 재료공학과) ;
  • 김준아 (부산대학교 재료공학과) ;
  • 박정환 (신라대학교 신소재공학과) ;
  • ;
  • 손영국 (부산대학교 재료공학과)
  • Received : 2022.02.12
  • Accepted : 2022.02.28
  • Published : 2022.02.28
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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

Acknowledgement

이 과제는 부산대학교 기본연구지원사업(2 년)에 의하여 연구되었음.

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