Asymmetric supercapacitor based on VS2 nanosheets and activated carbon materials. Issue 45 (19th April 2016)

• Record Type: Journal Article
• Authors: Masikhwa, Tshifhiwa M.; Barzegar, Farshad; Dangbegnon, Julien K.; Bello, Abdulhakeem; Madito, Moshawe J.; Momodu, Damilola; Manyala, Ncholu
• Is Part Of: RSC advances. Volume 6:Issue 45(2016)
• Page Start: 38990
• Page End: 39000
• Publication Date: 2016-04-19
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra27155j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Asymmetric supercapacitor with VS2 nanosheets as positive and activated carbon materials as negative electrodes exhibited maximum energy density (42 W h kg −1 ). Abstract : An asymmetric supercapacitor was fabricated using VS2 nanosheets as the positive electrode and activated carbon (AC) as the negative electrode, with a 6 M KOH solution as electrolyte. These materials were combined to maximize the specific capacitance and enlarge the potential window, therefore improving the energy density of the device. A specific capacitance of 155 F g −1 at 1 A g −1 with a maximum energy density as high as 42 W h kg −1 and a power density of 700 W kg −1 was obtained for the asymmetric supercapacitor within the voltage range of 0–1.4 V. The supercapacitor also exhibited good stability, with ∼99% capacitance retention and no capacitance loss after 5000 cycles at a current density of 2 A g −1 .