J. Mater. Sci. Technol. ›› 2018, Vol. 34 ›› Issue (12): 2384-2391.DOI: 10.1016/j.jmst.2018.06.005

• Orginal Article • Previous Articles     Next Articles

Nitrogen-doped hierarchical porous carbon materials derived from diethylenetriaminepentaacetic acid (DTPA) for supercapacitors

Tinghuan Wuac, Lixian Sunabc*(), Fen Xuabc*(), Dan Caiabc   

  1. a School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
    b Guangxi Key Laboratory of Information Materials, Guilin 541004, China
    c Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials, Guilin 541004, China
  • Received:2017-08-09 Revised:2017-09-26 Accepted:2017-10-30 Online:2018-12-20 Published:2018-11-15
  • Contact: Sun Lixian,Xu Fen

Abstract:

Nitrogen-doped porous carbon materials (NPCs) have been successfully fabricated by a simple one-step pyrolysis of diethylenetriaminepentaacetic acid (DTPA) in the presence of KOH. The as-synthesized NPCs displayed a high specific surface area (3214?m2?g-1) and a well-defined porous structure when the annealing temperature reached 800?°C, which showed superior electrochemical performance as supercapacitor electrode materials. Electrochemical tests showed that the NPCs achieved an impressive specific capacitance of 323?F?g-1 at a current density of 0.5?A?g-1 in 6?M KOH aqueous solution and an outstanding cycle stability, negligible specific capacitance decay after 5000 cycles at 10?A?g-1. This strategy offered a new insight into the preparation of novel carbon materials for the advanced energy storage devices, such as supercapacitors, fuel cells and lithium ion batteries.

Key words: Supercapacitors, DTPA, Nitrogen-doped porous carbon materials