J. Mater. Sci. Technol. ›› 2017, Vol. 33 ›› Issue (8): 788-792.DOI: 10.1016/j.jmst.2016.08.006

• Orginal Article • Previous Articles     Next Articles

Molten Salt Electrolytic Fabrication of TiC-CDC and Its Applications for Supercapacitor

Wan Chaopin1, Zhang Rongxia1, Wang Shulan1(), Liu Xuan2()   

  1. 1Department of Chemistry, School of Science, Northeastern University, Shenyang 110819, China
    2Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh 15213, PA, USA
  • Received:2016-04-22 Accepted:2016-06-05 Online:2017-08-20 Published:2017-10-31

Abstract:

Titanium carbide derived carbon (TiC-CDC) was prepared by the molten salt electrolytic method in molten salt NaCl-KCl at the potential of 1.3 V using TiC pellets as the anode. X-ray diffraction, scanning electron microscopy and Raman spectrum were used to characterize the composition, morphology and microstructure of TiC-CDC. The electrochemical performance of TiC-CDC for supercapacitor was investigated in 0.5 mol L-1 Na2SO4 by cycle voltammograms, ac impedance spectrum and galvanostatic charge/discharge. TiC-CDC showed excellent electrochemical and capacitive performances and maintained a capacity value of 126.1 F g-1 after 1000 cycles with a capacity retention rate of 97% at the current density of 3 A g-1. The current work demonstrated the feasibility of molten salt electrolytic method for preparation of TiC-CDC and provided a non-polluting and environmentally friendly strategy for high performance supercapacitor fabrication.

Key words: Supercapacitor, Electrochemistry, Molten salt