Ultrathin nickel sulfide nano-flames as an electrode for high performance supercapacitor; comparison of symmetric FSS-SCs and electrochemical SCs device. Issue 72 (19th July 2016)

• Record Type: Journal Article
• Authors: Patil, A. M.; Lokhande, V. C.; Lokhande, A. C.; Chodankar, N. R.; Ji, T.; Kim, J. H.; Lokhande, C. D.
• Is Part Of: RSC advances. Volume 6:Issue 72(2016)
• Page Start: 68388
• Page End: 68401
• Publication Date: 2016-07-19
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra12018k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : (a) The schematic for fabrication of the symmetric FSS-SCs device, (b) demonstration of FSS-SCs device with the glow of a red LED and (c) the performance comparison of symmetric FSS-SCs and electrochemical SCs device. Abstract : Metal sulfides have received well deserved attention due to their excellent electrical conductivity and thermal stability, as compared to metal oxides, allowing them to achieve a high capacitance and energy density for portable energy storage devices. In this study, the preparation of highly porous nano-flames composed of nickel sulfide (NiS) thin film on a cost effective, flexible stainless steel substrate through a trouble free, inexpensive and simple chemical bath deposition (CBD) method is reported. The prepared nano-flames composed of a NiS thin film demonstrates the excellent electrochemical features with a maximum specific capacitance ( C s ) of 750.6 F g −1 at a scan rate of 5 mV s −1 in a three electrode system. Furthermore, the portable symmetric flexible solid state supercapacitor (FSS-SC) and electrochemical supercapacitor (SC) are fabricated and tested. In comparison with the symmetric electrochemical SC, the symmetric FSS-SC shows an excellent electrochemical performance with a high C s of 104 F g −1 at 5 mV s −1 with a good electrochemical stability of 85.3% over 3000 CV cycles. This study constitutes the first comparison of symmetric FSS-SCs and electrochemical SCs formed with NiS nano-flames. Such an impressive symmetric FSS-SC is predicted to be an exceptionally promising candidate for energy storage systems.