Conductive Carbon Nitride for Excellent Energy Storage

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

140 Scopus Citations
View graph of relations

Author(s)

  • Feng Xu
  • Meng Qian
  • Fangfang Xu
  • Zhanglian Hong
  • Fuqiang Huang

Detail(s)

Original languageEnglish
Article number1701674
Journal / PublicationAdvanced Materials
Volume29
Issue number31
Publication statusPublished - 18 Aug 2017
Externally publishedYes

Abstract

Conductive carbon nitride, as a hypothetical carbon material demonstrating high nitrogen doping, high electrical conductivity, and high surface area, has not been fabricated. A major challenge towards its fabrication is that high conductivity requires high temperature synthesis, but the high temperature eliminates nitrogen from carbon. Different from conventional methods, a facile preparation of conductive carbon nitride from novel thermal decomposition of nickel hydrogencyanamide in a confined space is reported. New developed nickel hydrogencyanamide is a unique precursor which provides self-grown fragments of ⋅NCN⋅ or NCCN and conductive carbon (C-sp<sup>2</sup>) catalyst of Ni metal during the decomposition. The final product is a tubular structure of rich mesoporous and microporous few-layer carbon with extraordinarily high N doping level (≈15 at%) and high extent of sp<sup>2</sup> carbon (≈65%) favoring a high conductivity (&gt;2 S cm<sup>−1</sup>); the ultrahigh contents of nongraphitic nitrogen, redox active pyridinic N (9 at%), and pyrrolic N (5 at%), are stabilized by forming NiN bonds. The conductive carbon nitride harvests a large capacitance of 372 F g<sup>−1</sup> with &gt;90% initial capacitance after 10 000 cycles as a supercapacitor electrode, far exceeding the activated carbon electrodes that have &lt;250 F g<sup>−1</sup>. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Research Area(s)

  • conductive carbon nitride, electrochemical capacitors, few-layer carbon, nickel hydrogencyanamide, nongraphitic nitrogen

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Conductive Carbon Nitride for Excellent Energy Storage. / Xu, Jijian; Xu, Feng; Qian, Meng et al.
In: Advanced Materials, Vol. 29, No. 31, 1701674, 18.08.2017.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review