Stable Deep Doping of Vapor-Phase Polymerized Poly(3,4-ethylenedioxythiophene)/Ionic Liquid Supercapacitors
Dr. Christoffer Karlsson, James Nicholas, Prof. Drew Evans, Prof. Maria Forsyth, Prof. Maria Strømme, Prof. Martin Sjödin, Prof. Patrick C. Howlett and Dr. Cristina Pozo-Gonzalo
Version of Record online: 21 JUN 2016 | DOI: 10.1002/cssc.201600333
Vapor trail: Vapor-phase polymerized poly(3,4-ethylenedioxythiophene) (PEDOT) supercapacitor cells that employ 1-ethyl-3-methylimidazolium dicyanamide as the electrolyte exhibit an outstanding performance with a specific cell capacitance of 76.4 F g−1 and a specific cell energy of 19.8 Wh kg−1. PEDOT is stable at a high doping level of 0.7 under these conditions. This is a significant improvement compared with PEDOT synthesized from liquid solution and other common electrolytes.