Electrochemical double layer capacitor performance of electrospun polymer fiber-electrolyte membrane fabricated by solvent-assisted and thermally induced compression molding processes

► Polymer electrolyte membranes were fabricated by compression of electrospun fibers. ► Polymer electrolyte membranes exhibit a free-standing shape with bending capability. ► SPEs showed good performances compared with the liquid organic electrolyte. The electrochemical characteristics of electric d...

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Bibliographic Details
Published in:Journal of membrane science 2012-08, Vol.409-410, p.365-370
Main Authors: Lee, Pyoung-Chan, Han, Tai-Hoon, Hwang, Taeseon, Oh, Joon-Suk, Kim, Se-Joon, Kim, Byung-Woo, Lee, Youngkwan, Choi, Hyouk Ryeol, Jeoung, Sun Kyoung, Yoo, Seung Eul, Nam, Jae-Do
Format: Article
Language:English
Subjects:
artificial membranes
capacitance
Compression molding
Electric double layer capacitors
electrical equipment
electrochemistry
electrolytes
Electrospinning
energy density
Poly(acrylonitrile)
polymers
Solid polymer electrolytes
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Summary:► Polymer electrolyte membranes were fabricated by compression of electrospun fibers. ► Polymer electrolyte membranes exhibit a free-standing shape with bending capability. ► SPEs showed good performances compared with the liquid organic electrolyte. The electrochemical characteristics of electric double layer capacitors composed of solid polymer electrolytes with different thicknesses were investigated. A solid polymer electrolyte membrane was fabricated using electrospun fibers through solvent-assisted or thermally induced compression molding. Through the solvent-assisted or thermally induced compression molding processes, the poly(acrylonitrile) (PAN) microfibers consolidated together by the interlocking of the fibers under compression. A solid polymer electrolyte membrane clearly exhibited a free-standing shape with a bending capability. The electrospun PAN non-woven fabric and electrolyte salt composites showed higher ionic conductivity (>10−3Scm−1 at 298K) and capacitance compared with the liquid organic electrolyte. The solid polymer electrolytes provided a 10.6% increase in the energy density, seemingly due to the decrease in the IR drop and increase in the capacitance.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2012.04.007