| 摘要 |
PROBLEM TO BE SOLVED: To reduce an inside resistance by thinning the thickness of electrolyte by pouring, holding and cooling dissolved gel electrolyte constituent material between glass plates or between silicone sheets. SOLUTION: Gel electrolyte of an electric double layer capacitor is constituted of polymer, organic solvent and electrolytic salt and polyacrylonitrile is used for polymer, propylene carbonate is used for organic solvent and tetraethyle ammonium borate tetrafluoride is used for electrolytic salt. In the preparation method, a specified amount of a constituent material of gel electrolyte is weighed and is heated and dissolved at 100 deg.C. Then, a 0.2 mm-thick Teflon spacer 2 is put on a glass plate 1a, dissolved gel electrolyte 3 is cast between the Teflon spacers 2 and furthermore, a glass plate 1b is pressed from an upper part thereof and is cooled. As a result, a 0.2 mm-thick thin type gel electrolyte is obtained. The gel electrolyte 3 of an arbitrary thickness can be prepared by changing the thickness of the Teflon spacer 2. |
