New solid electrolytes for electrochromic smart windows

G. Frand; C. Rousselot; Odile Bohnke

doi:10.1117/12.130554

25 November 1992 New solid electrolytes for electrochromic smart windows

G. Frand, C. Rousselot, Odile Bohnke

Proceedings Volume 1728, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XI: Chromogenics for Smart Windows; (1992) https://doi.org/10.1117/12.130554
Event: Optical Materials Technology for Energy Efficiency and Solar Energy, 1992, Toulouse-Labege, France

Abstract

Viscosity and ionic conductivity were carried out on gel electrolytes made of highly amorphous polymer, poly(methylmethacrylate), LiClO₄ salt, and a solvent of high boiling temperature, propylene carbonate. In the composition range 0 weight % - 35 weight % of PMMA in the gel, the conductivity decreases very slightly as the amount of PMMA increases. On the other hand, a large increase of viscosity is observed. This result is interpreted on the basis that, from a microscopic point of view, the gel may be seen as a free liquid electrolyte encaged in a polymer matrix. For amounts of PMMA larger than 35 weight % the conductivity decreases more rapidly. These gels are transparent in the visible region, thermally stable in a large domain of temperatures, i.e., -65 degree(s)C, +160 degree(s)C and electrochemically stable, i.e., (Delta) V equals 4.5 V. They are good candidates as `solid electrolytes' for the realization of solid state electrochromic `smart' windows.

Citation Download Citation

G. Frand, C. Rousselot, and Odile Bohnke "New solid electrolytes for electrochromic smart windows", Proc. SPIE 1728, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XI: Chromogenics for Smart Windows, (25 November 1992); https://doi.org/10.1117/12.130554

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