화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.97, 239-249, May, 2021
DOI10.1016/j.jiec.2021.02.002  Export Citation
Carbon Nanotube.Manganese oxide nanorods hybrid composites for high-performance supercapacitor materials
Bal Sydulu Singu1, 2, Emad S. Goda2, 3, and Kuk Ro Yoon2, †
  • 1Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
  • 2Organic Nanomaterials Lab., Department of Chemistry, Hannam University, Daejeon, 34054, Republic of Korea
  • 3Fire Protection Laboratory, National Institute of Standards, Box 136, Giza, 12211, Egypt
E-mail:
In the present work, multiwall carbon nanotubes (CNTs) were used as a reducing agent for the preparation of CNT-MnO2 nanocomposites by varying the amount of potassium permanganate (KMnO4). The chemical compositions of the as-synthesized materials were analyzed using X-ray diffraction, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy, which showed the formation of MnO2 in the CNT-MnO2 nanocomposites. The electrochemical properties of the CNT-MnO2 nanocomposites were thoroughly investigated through cyclic voltammetry, charge.discharge, and impedance studies. The CNT-MnO2-25 nanocomposites appeared with the highest specific capacitance of 674 F g-1 at a current density of 2 A g-1; they also displayed an excellent capacitance retention of ~110% even after the completion of 5000 continuous charge.discharge cycles at 10 A g-1.
Keywords:Carbon nanotubes;Manganese oxide;Nanocomposites;Nanorods;Supercapacitor
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