Articles
  • Preparation and application of urchin-like TiO2/activated carbon for high performance hybrid supercapacitors
  • Seung-Hwan Leea , Jong-Myon Kimc,* and Jung-Rag Yoonb,*
  • a Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA b R&D Center, Samwha Capacitor, Korea c Department of IT Convergence, University of Ulsan, Ulsan 44610, Korea
Abstract
We successfully prepared urchin-like TiO2 material composed of numerous nanorods by hydrothermal method. After that, a cylindrical hybrid supercapacitor was fabricated by using urchin-like TiO2 anode and activated carbon cathode. The energy and power density of hybrid supercapacitor using urchin-like TiO2 ranged from 10.134 to 50.648 Wh kg−1 and from 194.412 to 12224.356 W kg−1 , higher than those of hybrid supercapacitors using Li4Ti5O12 anode. It also shows the extraordinary cycle performance of 93.6% at 3.0 Ag−1 after 1000 cycles. As a result, we can conclude that urchin-like TiO2 can be regarded as high efficiency anode for hybrid supercapacitors.

Keywords: Urchin-like TiO2, Hydrothermal method, Hybrid Supercapacitor, Energy and power density.

This Article

  • 2017; 18(1): 51-54

    Published on Jan 31, 2017

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