Title:
セパレータ材料及びそれを用いた電池
Document Type and Number:
Japanese Patent JP5844987
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a separator material having excellent fineness and a uniform texture, showing high resistance to shorts when used as a separator of an alkaline secondary battery, and achieving a long charge-discharge cycle life, and a battery comprising the same.SOLUTION: A separator material in accordance with an embodiment of the present invention is made of a nonwoven fabric containing high-strength composite fibers having a single-fiber strength of 4.0 cN/dtex or higher. In the nonwoven fabric, at least a portion of constituent fibers is thermally bonded together with the high-strength composite fibers, the extension percentage of the high-strength composite fibers is higher than 30% and equal to or lower than 60%, and the modulus of elasticity is equal to or higher than 3250 N/mmand lower than 4650 N/mm.
Inventors:
Koji Wakizaka
Toshio Kamisasa
Yuki Nakahata
Toshio Kamisasa
Yuki Nakahata
Application Number:
JP2011081163A
Publication Date:
January 20, 2016
Filing Date:
March 31, 2011
Export Citation:
Assignee:
Daiwabo Holdings Co., Ltd.
Daiwabo Polytech Co., Ltd.
Daiwabo Polytech Co., Ltd.
International Classes:
H01M2/16
Domestic Patent References:
| JP2004335159A | ||||
| JP2005108695A | ||||
| JP2004296356A | ||||
| JP2003239170A | ||||
| JP2000215876A | ||||
| JP2001307710A | ||||
| JP2000353509A |
Foreign References:
| US20080233483 |