Polymer gel electrolytes for electrochromic devices

• Published in: Electrochimica acta Vol. 44; no. 18; pp. 3067 - 3073
• Main Authors: Vondrák, Jiřı́, Sedlařı́ková, Marie, Reiter, Jakub, Hodal, Tomáš
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 01.01.1999; Elsevier
• Subjects: Chemistry; Electrochemistry; Electrochromism; Exact sciences and technology; Gel electrolyte; General and physical chemistry; Ionic mobility; Lithium; Miscellaneous (electroosmosis, electrophoresis, electrochromism, electrocrystallization, ...); Polymethylmethacrylate; Lithium; Electrochromism; Polymethylmethacrylate; Gel electrolyte; Ionic mobility; Electrical conductivity; Organic carbonate; Temperature effect; Polymer solid electrolyte; Methyl methacrylate polymer; Experimental study; Organic solvent; Acrylonitrile polymer; Concentration effect; Crosslinked polymer; Lithium Tetrafluoborates; Electrical impedance
• ISSN: 0013-4686; 1873-3859
• DOI: 10.1016/S0013-4686(99)00022-5

Elastic and sticky polymer gel electrolytes were prepared by polymerisation of methacrylate resin to which solutions, containing LiBF 4 and [(C 2H 5) 4N]BF 4 in various ratios in PC, were added, keeping the ionic strength constant. A concentration cell containing two polymer samples and two equal LiHg x electrodes was used for the estimation of reversible potential. At RT, their conductivity was not much depressed by the presence of the polymer gel and it was of ohmic nature. Below −40 to −30°C, the behaviour of a high tg δ dielectric was observed and the conductivity decreased rapidly.