| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery separator excellent in any of an electrolyte absorbing speed, holdability, gas permeability and uniformity. SOLUTION: This battery separator is wet nonwoven fabric composed of polyphenylene sulfide fiber, and when it is measured in accordance with a B- method specified in JIS L-1096, a liquid absorbing speed of 30wt.% potassium hydroxide water solution is 10mm/30min. or more, further with a liquid holding factor 100% or more. This battery is constituted by the battery separator thus formed. |
