Pyrrolic-structure enriched nitrogen doped graphene for highly efficient next generation supercapacitors

Fathy M. Hassan, Victor Chabot, Jingde Li, Brian Kihun Kim, Luis Ricardez-Sandoval, Aiping Yu

Research output: Contribution to journalArticlepeer-review

185 Citations (Scopus)

Abstract

This study reports the preparation of pyrrolic-structure enriched nitrogen doped graphene by hydrothermal synthesis at varied temperature. The morphology, structure and composition of the prepared nitrogen doped graphene were confirmed with SEM, XRD, XPS and Raman spectroscopy. The material was tested for supercapacitive behavior. It was found that doping graphene with nitrogen increased the electrical double layer supercapacitance to as high as 194 F g-1. Furthermore, density functional theory (DFT) calculations showed the proper level of binding energy found between the pyrrolic-nitrogen structure and the electrolyte ions, which may be used to explain the highest contribution of the pyrrolic-structure to the capacitance.

Original languageEnglish
Pages (from-to)2904-2912
Number of pages9
JournalJournal of Materials Chemistry A
Volume1
Issue number8
DOIs
Publication statusPublished - Feb 28 2013
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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