A structural supercapacitor based on activated carbon fabric and a solid electrolyte. Issue 3 (11th February 2019)

• Record Type: Journal Article
• Authors: Reece, Richard; Lekakou, C.; Smith, P.A.
• Is Part Of: Materials science and technology. Volume 35:Issue 3(2019)
• Page Start: 368
• Page End: 375
• Publication Date: 2019-02-11
• Subjects: Solid EDLC -- VARTM -- activated carbon fibre fabric -- solid composite electrolyte -- TEABF4 in propylene carbonate -- epoxy -- three-point bend test; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2018.1560536
• Languages: English
• ISSNs: 0267-0836

Abstract

ABSTRACT: This paper presents investigations to create a structural supercapacitor with activated carbon fabric electrodes and a solid composite electrolyte, consisting of organic liquid electrolyte 1 M TEABF4 in propylene carbonate and an epoxy matrix where different compositions were considered of 1:2, 1:1 and 2:1 w/w epoxy:liquid electrolyte. Vacuum-assisted resin transfer moulding was used for the impregnation of the electrolyte mixture into the electrochemical double layer capacitor (EDLC) assembly. The best electrochemical performance was exhibited by the 1:2 w/w epoxy: liquid electrolyte ratio, with a cell equivalent-in-series resistance of 160 Ω cm 2 and a maximum electrode-specific capacitance of 101.6 mF g −1 while the flexural modulus and strength were 0.3 GPa and 29.1 MPa, respectively, indicating a solid EDLC device.