All solid state flexible supercapacitors operating at 4 V with a cross-linked polymer–ionic liquid electrolyte. Issue 12 (4th March 2016)

• Record Type: Journal Article
• Authors: Ahn, Yong-keon; Kim, Bokyung; Ko, Jieun; You, Duck-Jea; Yin, Zhenxing; Kim, Hyunjin; Shin, Dalwoo; Cho, Sanghun; Yoo, Jeeyoung; Kim, Youn Sang
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 12(2016)
• Page Start: 4386
• Page End: 4391
• Publication Date: 2016-03-04
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6ta00643d
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : 4 V-operated all solid symmetrical supercapacitors that employ mixtures of various weight compositions with c-P4 VPh and EMITFSI electrolytes have been demonstrated and characterized. Abstract : 4 V-operated all solid symmetrical supercapacitors that employ mixtures of various weight compositions with cross-linked poly-4-vinylphenol (c-P4 VPh) and 1-ethyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)imide (EMITFSI) electrolytes have been demonstrated and characterized. The values at 1 : 3, 3.5, 4 and 4.5 (c-P4 VPh : EMITFSI) offer free-standing membranes with high ionic conductivity. In the case of 1 : 3.5, the best specific capacitance (172.44 F g −1 in a single-electrode) and energy density (72.23 W h kg −1 ) were obtained at symmetrical cells based on porous carbon electrodes. Every prepared SC was reliable over 1000 cycles in the range of 0–4 V. They also have excellent flexibility and maintain capacitance after completing the bending test a thousand times.