Gel electrolytes with ionic liquid plasticiser for electrochromic devices

Authors

Satyen Desai, University of Wollongong
Roderick L. Shepherd, University of WollongongFollow
Peter C. Innis, University of WollongongFollow
Peter Murphy, University of South Australia
Collin Hall, University of South Australia
Rickj Fabretto, University of South Australia
Gordon G. Wallace, University of WollongongFollow

RIS ID

38187

Publication Details

Desai, S, Shepherd, RL, Innis, PC, Murphy, P, Hall, C, Fabretto, R & Wallace, GG (2011), Gel electrolytes with ionic liquid plasticiser for electrochromic devices, Electrochimica Acta, 56(11), pp. 4408-4413.

Abstract

The comparative performance of conducting polymer electrochromic devices (ECDs) utilising gel polymer electrolytes (GPEs) plasticised with ethylene carbonate/propylene carbonate or (N-butyl-3-methylpyridinium trifluoromethanesulphonylimide (P₁₄TFSI) has been made. Lithium perchlorate and lithium trifluoromethanesulphonylimide salts were used in the GPEs to provide enhanced ionic conductivity and inhibit phase separation of the polyethyleneoxide (PEO) and plasticiser. ECDs were assembled from cathodically colouring, polyethylenedioxythiophene (PEDOT), and anodically colouring, polypyrrole (PPy), conducting polymer electrochromes deposited by vapour deposition. The photopic contrast switching over the visible light spectrum, switching speeds and device stability of the ECDs were obtained. These studies demonstrate that the ionic liquid (IL) plasticised GPEs are a suitable replacement for pure IL based devices and volatile organic solvent plasticisers based upon ethylene carbonate/propylene carbonate mixtures.

Grant Number

ARC/FF0669110

Additional Grant Number

http://purl.org/au-research/grants/ARC/FF0669110