Nitrogen-doped graphitic hierarchically porous carbon nanofibers obtained: Via bimetallic-coordination organic framework modification and their application in supercapacitors

Yuechao Yao, Peng Liu, Xiaoyan Li, Shaozhong Zeng, Tongbin Lan, Haitao Huang, Xierong Zeng, Jizhao Zou

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)

Abstract

Herein, N-doped graphitic hierarchically porous carbon nanofibers (NGHPCF) were prepared by electrospinning the composite of bimetallic-coordination metal-organic frameworks and polyacrylonitrile, followed by a pyrolysis and acid wash process. Control over the N content, specific surface area, and degree of graphitization of NGHPCF materials has been realized by adjusting the Co/Zn metal coordination content as well as the pyrolysis temperature. The obtained NGHPCF with a high specific surface area (623 m 2 g -1) and nitrogen content (13.83 wt%) exhibit a high capacitance of 326 F g -1 at 0.5 A g -1. In addition, the capacitance of 170 F g -1 is still maintained at a high current density (40 A g -1); this indicates a high capacitance retention capability. Furthermore, a superb energy density (9.61 W h kg -1) is obtained with a high power density (62.4 W kg -1) using an organic electrolyte. These results fully illustrate that the prepared NGHPCF binder-free electrodes are promising candidates for high-performance supercapacitors.

Original languageEnglish
Pages (from-to)7316-7326
Number of pages11
JournalDalton Transactions
Volume47
Issue number21
DOIs
Publication statusPublished - 1 Jan 2018

ASJC Scopus subject areas

  • Inorganic Chemistry

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