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Proceedings Paper

Gel electrolyte candidates for electrochromic devices (ECDs)
Author(s): Susan E. Legenski; Chunye Xu; Lu Liu; Marie O. Le Guilly; Minoru Taya
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Paper Abstract

A comparison of key parameters of seven different gel electrolytes for use in electrochromic devices (ECD) is reported. The ionic conductivity, transmittance, and stability of the gel electrolytes are important considerations for smart window applications. The gel electrolytes were prepared by combining polymethylmethacrylate (PMMA) with a salt and a solvent combination. Two different salts, lithium perchlorate (LiClO4) and trifluorosulfonimide (LiN(CF3SO2)2), and three solvent combinations, acetonitrile and propylene carbonate (ACN and PC), ethylene carbonate and propylene carbonate (EC and PC), and Gamma-butyrolactone and propylene carbonate (GBL and PC) were investigated. Results show that gel electrolytes composed of a LiClO4 and GBL+PC combination and a LiClO4 and EC+PC combination are the best candidates for a smart window device based on its high conductivity over time and various temperatures, as well as its electrochemical stability and high transmittance.

Paper Details

Date Published: 27 July 2004
PDF: 7 pages
Proc. SPIE 5385, Smart Structures and Materials 2004: Electroactive Polymer Actuators and Devices (EAPAD), (27 July 2004); doi: 10.1117/12.540128
Show Author Affiliations
Susan E. Legenski, Univ. of Washington (United States)
Chunye Xu, Univ. of Washington (United States)
Lu Liu, Univ. of Washington (United States)
Marie O. Le Guilly, Univ. of Washington (United States)
Minoru Taya, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 5385:
Smart Structures and Materials 2004: Electroactive Polymer Actuators and Devices (EAPAD)
Yoseph Bar-Cohen, Editor(s)

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