Hierarchical nitrogen-doped porous carbon with high surface area derived from endothelium corneum gigeriae galli for high-performance supercapacitor

Xiaoting Hong, K. S. Hui, Zhi Zeng, K. N. Hui, Luojiang Zhang, Mingyue Mo, Min Li

Research output: Contribution to journalArticle

110 Citations (Scopus)

Abstract

Endothelium corneum gigeriae galli derived 3D hierarchical nitrogen-doped porous carbon was for the first time prepared by preliminary carbonization at 450 °C and final KOH activation at high temperatures. The surface and structural properties of the as-synthesized samples are analyzed with Brunauer-Emmett-Teller surface analyzer apparatus, X-Ray Diffractometer, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectrometer. The electrochemical performances are analyzed by cyclic voltammetry, galvanostatic charge/discharge cycling and electrochemical impedance spectroscopy. The obtained results show that the sample carbonized at 900 °C possesses the SSA of 2149.9 m2 g-1, average micropore diameter of 1.78 nm, and exhibits the highest initial specific capacitance of 198.0 F g-1 at current density of 1 A g-1 in 6 M KOH solution. It retains good specific capacitance retention of 91.6% after 3000 charge/discharge cycles at current density of 2 A g-1.

Original languageEnglish
Pages (from-to)464-469
Number of pages6
JournalElectrochimica Acta
Volume130
Early online date15 Mar 2014
DOIs
Publication statusPublished - 1 Jun 2014

Keywords

  • Endothelium corneum gigeriae galli
  • High specific surface area
  • Nitrogen-doped porous carbon
  • Supercapacitor

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