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4411340 
Journal Article 
Polyether-PMMA adhesive electrolytes for electrochromic applications 
Stevens, JR; Such, K; Cho, N; Wieczorek, W 
1995 
1 
Solar Energy Materials and Solar Cells
ISSN: 0927-0248 
39 
2-4 
223-237 
English 
WOS:A1995TW52500012 
Stable to atmospheric moisture, adhesive and transparent polymer blend electrolytes have been synthesized by the free radical polymerization of methyl methacrylate (MMA) in a range of polyethers and doped with LiCF3SO3 and LiClO4. The polyethers include poly(ethylene glycol), poly(propylene glycol), ethylene oxide/propylene oxide (EO/PO) copolymers and oxymethylene linked poly(ethylene oxide). Polyether molecular weights range from 350 to 2600, salt concentrations from ether oxygen to lithium ratios of 8:1 to 25:1 and MMA concentrations from 4 vol% to 50 vol%. Ionic conductivities range from 10(-4) S/cm to 10(-6) S/cm at room temperature. Conductivities, morphologies, stability, and adhesive properties are discussed. Electrolytes are viscoelastic ranging from soft elastomers to castable thin films. The most favourable blends are thin films based upon EO/PO copolymers with salt concentrations of 25:1 and MMA concentrations in the range 8 to 40 vol%.