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Electrochromic Cells with Lutetium Diphthalocyanine and Semisolid Polymer Electrolytes.
Technical rept. 1 Jan 85-31 Aug 87,
ROCKWELL INTERNATIONAL ANAHEIM CA SCIENCE CENTER
Pagination or Media Count:
Cyclic voltammograms were obtained for lutetium diphthalocyanine films in contact with plasticized polyethylene oxide PEO electrolytes or solvent-swollen 2-acrylamido-2-methylpropane-sulfonic acid AMPS polymer electrolytes. Cells containing PEO-salt combinations plasticized with propylene glycol PG or acetonitrile resulted in slow, nonuniform color changes due to high interfacial resistance. The AMPS cell fabrication was simplified by starting with a commercial AMPS polymer product in the form of a transparent sheet containing water and other additives. This material, when further swollen in a PG-HC1 solution, produced the full range of uniform colors, accompanied by well defined voltammograms. It maintained good contact with the dye from -5 to 40 C. Keywords Diphthalocyanines, Solid polymer electrolytes, Electrochromism.
APPROVED FOR PUBLIC RELEASE