Stretchable fluoroelastomer quasi-solid-state organic electrolyte for high-performance asymmetric flexible supercapacitors. Issue 38 (15th September 2016)

• Record Type: Journal Article
• Authors: Wang, Xi; Yang, Chongyang; Wang, Gengchao
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 38(2016)
• Page Start: 14839
• Page End: 14848
• Publication Date: 2016-09-15
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6ta05299a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A novel stretchable fluoroelastomer quasi-solid-state organic electrolyte (FKM/Et4NBF4–AN) with high stretchability and nonflammability was prepared, and high-performance flexible supercapacitor was assembled by "prestrain-stick-relax-cure-soak" strategy. Abstract : Stretchable electrolytes are the key components to fabricate high-performance stretchable/flexible energy-storage devices, but there is little related research, especially about organic solvent-resistant types. Herein, novel stretchable fluoroelastomer/tetraethylammonium tetrafluoroborate–acetonitrile (FKM/Et4 NBF4 –AN), quasi-solid-state organic electrolytes were prepared by chemical cross-linking with hexamethylene diamine (HMDA). The FKM/Et4 NBF4 –AN quasi-solid-state electrolyte exhibited a slight plastic deformation (1.4%) after 500 stretching cycles at 100% strain, good solvent resistance, high ionic conductivity (9.9 × 10 −3 S cm −1 ), and nonflammability. In order to demonstrate its superior performance, a novel "prestrain-stick-relax-cure-soak" assembly strategy was adopted for the organic asymmetric flexible supercapacitors (oAFSCs) with carbon nanotube paper-supported polypyrrole (CNT@PPy) and poly(1, 5-diaminoanthraquinone) (CNT@PDAA) as cathode and anode, respectively. The as-assembled oAFSC achieved a high energy density of 58.2 W h kg −1 (4.87 mW h cm −3 ) at a power density of 0.37 kW kg −1 (0.031 W cm −3 ), superior cycling stability (88% retention after 10 000) and works well even in the stretched, bended or twisted state.