화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.61, 206-215, May, 2018
DOI10.1016/j.jiec.2017.12.018  Export Citation
Towards high performance unique microstructures of Co9S8//CoFe2O4 for asymmetric supercapacitor
S.J. Patil1, A.C. Lokhande2, J.S. Park1, J.H. Kim2, Y.B. Kim3, B.C. Choi3, S.H. Park3, S.H. Jung1, and D.W. Lee1, 4, †
  • 1aMEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
  • 2Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea
  • 3School of Mechanical Systems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
  • 4Center for Next-Generation Sensor Research and Development, Chonnam National University, Gwangju 61186, Republic of Korea
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Herein, we have proposed asymmetric supercapacitor device to achieve empirical electrochemical performance based on binder-free Co9S8 and CoFe2O4 electrodes. The unique architecture and porous surface of the prepared electrodes were analyzed using electron microscopy and Brunauer.Emmett. Teller technique. Electrochemical properties of Co9S8 and CoFe2O4 electrode were employed in a threeelectrode cell-configuration that exhibits a capacitance of 817 and 1203 F g-1, respectively. Co9S8// CoFe2O4 asymmetric supercapacitor reveals a high capacitance of 79.11 F g-1 with 28.88 Wh kg-1 energy density and superior cyclic stability over 2500 cycles (~87%). These results suggest that prepared electrodes have a great potential for practical applications.
Keywords:Surface microstructure;Specific capacitance;Specific energy density;Specific power density
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