| 摘要 |
PURPOSE:To enable a liquid-holding member containing gel electrolyte to be manufacture in a short time successively by irradiating microwave on a gelling agent and electrolyte to turn them into a gel or a solid. CONSTITUTION:After the amount of electrolyte to be held by a nonwoven polypropylene fabric used as a base material is set, the amount of PMMA to be applied to the above nonwoven polypropylene fabric is calculated from the set amount and the specific gravity of the electrolyte. After the calculated amount of PMMA is weighed, it is dissolved in a proper amount of tetrahydrofuran or methyl ethyl ketone which is a good solvent for PMMA. After the base material coated with PMMA is put in a heat-resisting glass Petri dish, 45mul of the electrolyte is poured onto the base material and an upper lid is placed over the dish, then this is put in a microwave range having a frequency of 2,450MHz and an output of 600W before being subjected to microwave irradiation. As a result, a gel-like electrolyte is easily obtained since gamma-butyrolactone having a high boiling point is evaporated with difficulty. The thus obtained electrolyte layer 5 is combined with a sealing plate 1, a case 4, a polypropylene gasket 6 and the like, thereby constituting a battery. |
