Integration of UV-cured Ionogel Electrolyte with Carbon Paper Electrodes

• Main Authors: Stephanie Flores Zopf, Matthew J. Panzer
• Format: Article
• Language: English
• Published: AIMS Press 2014-02-01
• Series: AIMS Materials Science
• Subjects: supercapacitor; ionogel; ionic liquid; carbon paper; energy storage
• Online Access: http://www.aimspress.com/Materials/article/172/fulltext.html

A test bed with a coplanar architecture is employed to investigate the integration of an <em>in situ</em> cross-linked, polymer-supported ionogel with several commercially available, high surface area carbon paper electrodes. Specifically, a UV-cured poly(ethylene glycol) diacrylate (PEGDA)-supported ionogel electrolyte film is formed <em>in situ</em> against a variety of porous electrodes comprising: a carbon fiber paper, a carbon aerogel paper, and four carbon nanotube-based papers. Electrochemical impedance spectroscopy measurements reveal that the relative performance of a particular carbon paper with the neat ionic liquid is not necessarily indicative of its behavior when integrated with the solid ionogel electrolyte. The coplanar test bed can therefore serve as a useful tool to help guide the selection of suitable carbon-based electrode structures for supercapacitors that incorporate UV-cured ionogels created <em>in situ</em> for wearable energy storage applications.