One-step synthesis of graphitic-C 3 N 4 /ZnS composites for enhanced supercapacitor performance
KAUST DepartmentMaterials Science and Engineering Program
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AbstractA 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.
CitationWei B, Liang H, Wang R, Zhang D, Qi Z, et al. (2017) One-step synthesis of graphitic-C 3 N 4 /ZnS composites for enhanced supercapacitor performance. Journal of Energy Chemistry. Available: http://dx.doi.org/10.1016/j.jechem.2017.11.015.
SponsorsThis work was supported by the National Nature Science Foundations of China (Grant no. 51372212).
JournalJournal of Energy Chemistry