Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
634954 | Journal of Membrane Science | 2012 | 6 Pages |
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 (>10−3 S cm−1 at 298 K) 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.
► 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.