One-step synthesis of graphitic-C 3 N 4 /ZnS composites for enhanced supercapacitor performance

Binbin Wei, Hanfeng Liang, Rongrong Wang, Dongfang Zhang, Zhengbing Qi, Zhoucheng Wang

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

A series of graphitic-C3N4/ZnS (g-C3N4/ZnS) supercapacitor electrode materials have been prepared via a one-step calcination process of zinc acetate/thiourea with different mass ratios under nitrogen atmosphere. The optimized g-C3N4/ZnS composite shows a highest specific capacitance of 497.7 F/g at 1 A/g and good cycling stability with capacitance retention of 80.4% at 5 A/g after 1000 cycles. Moreover, g-C3N4/ZnS composites display an improved supercapacitor performance in terms of specific capacitance compared to the pure g-C3N4 and ZnS. In addition, our designed symmetric supercapacitor device based on g-C3N4/ZnS composite electrodes can exhibit an energy density of 10.4 Wh/kg at a power density of 187.3 W/kg. As a result, g-C3N4/ZnS composites are expected to be a prospective material for supercapacitors and other energy storage applications.
Original languageEnglish (US)
Pages (from-to)472-477
Number of pages6
JournalJournal of Energy Chemistry
Volume27
Issue number2
DOIs
StatePublished - Nov 24 2017

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