Conducting polymer based electrochromic devices were assembled with various ionic liquid (IL) based electrolytes to probe the role of the ion structure on electrochromic performance. When the IL contained the same anion as the dopant ion used in the conducting polymers an enhanced electrochromic performance was observed providing high photopic contrast at low applied potential.
Winther-Jensen, O., Desai, S., Shepherd, R. L., Innis, P. C., Winther-Jensen, B., Forsyth, M., Wallace, G. G. & McFarlane, D. R. (2010). Ion effects in REDOX cycling of conducting polymer based electrochromic materials. Electrochemistry Communications, 12 (11), 1505-1508.