Nitrogen-Doped Porous Carbon Nanospheres Activated under Low ZnCl2Aqueous System: An Electrode for Supercapacitor Applications

Xingxing Zhu, Xinhua Huang, Shoaib Anwer, Nuoya Wang, Lidong Zhang

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

We reported a controlled synthesis method to obtained carbon spheres with tunable geometry under low ZnCl2 aqueous solution conditions using polytriazine as a precursor. The polytriazine precursor was polymerized by mixing/reaction of 2,6-diaminopyridine and formaldehyde in the presence of a diluted ZnCl2 aqueous system. The obtained nanospheres were then decomposed to adulterate nitrogen porous carbon nanospheres (N-PCNSs) by the decomposition and blistering process at high temperature by degrees. ZnCl2 worked as a solid-template and played the role of a stabilizing and foaming agent in the reaction. The as-prepared N-PCNSs with controllable spherical geometry, large micro-/mesoporous volume and high nitrogen content (∼8.5 wt %) were employed in electric double-layer capacitors that have a good specific capacitance (636 F/g at 1 A/g) and are long lasting. Besides, the N-PCNS delivered a high energy density of 22.1 Wh/Kg at a power density of 500 W/kg.

Original languageBritish English
Pages (from-to)9284-9290
Number of pages7
JournalLangmuir
Volume36
Issue number31
DOIs
StatePublished - 11 Aug 2020

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