| abstract |
In an alkaline battery in which an opening of a battery case 1 containing a power-generating element is sealed via a sealing plate 7 with a gasket 5 interposed between the battery case 1 and the sealing plate 7, the sealing plate 7 has a vent 7 a, the gasket 5 has an explosion-proof valve 5 a, an electrolyte filter 9 made of a porous membrane is disposed in a space defined by the sealing plate 7 and the gasket 5, a volume of a space defined by the sealing plate 7 and the electrolyte filter 9 is greater than or equal to 0.25 cm 3 , and a tensile stress of the electrolyte filter 9 at 100% tensile elongation in at least one direction is in a range of 60-4000 N/m. |