Battery separator and battery containing same

Details Battery separator and battery containing same Battery separator and battery containing same

1994-11-04

1996-12-31

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer, spacer or materials for use therewith

429249, 429142, 429144, H01M 216

Patent

active

055893023

ABSTRACT:
The present invention provides a battery separator comprising (a) a nonwoven web of fibers having a mean diameter of about 15 .mu.m or less and (b) a graft polymerized monomer on the surface of the nonwoven web which renders the nonwoven web spontaneously wettable by an alkaline electrolyte, wherein the nonwoven web comprises at least about 60 wt. % of a first polyolefin having a first melting temperature and no more than about 40 wt. % of a second polyolefin having a second melting temperature which is lower than the first melting temperature, the nonwoven web has been subjected to a temperature between the first and second melting temperatures, and the nonwoven web has a thickness of at least about 50 .mu.m. The present invention also provides a battery containing such a battery separator, as well as a method of preparing such a battery separator and battery.

REFERENCES:
patent: 3121658 (1964-02-01), Orsino et al.
patent: 3427206 (1969-02-01), Scardaville et al.
patent: 3600122 (1971-08-01), Coleman
patent: 4110143 (1978-08-01), Cogliano et al.
patent: 4253927 (1981-03-01), Bernstein et al.
patent: 4298668 (1981-11-01), Schmidt et al.
patent: 5100723 (1992-03-01), Iwasaki et al.
patent: 5284704 (1994-02-01), Kochesky et al.
patent: 5354617 (1994-10-01), Ikkanzaka et al.
patent: 5401594 (1995-03-01), Schwobel et al.
patent: 5492781 (1996-02-01), Degen et al.
Billmeyer, "Textbook of Polymer Science", Wiley-Interscience, pp. 222 and 224, month unavailable 1971.
Patent Abstracts of Japan, 4 (133), E-026 (Sep. 18, 1980) (JP-A-55-088263).
Patent Abstracts of Japan, 4 (145), E-029 (Oct. 14, 1980) (JP-A-55-096554).
Patent Abstracts of Japan, 6 (243), E-145 (Dec. 2, 1982) (JP-A-57-141862).
Patent Abstracts of Japan 7 (166), E-188 (Jul. 21, 1958) (JP-A-58-073954).
Patent Abstracts of Japan 13 (450), E-830 (Oct. 11, 1989) (JP-A-01-175165).
Hirose Brochure, "HOP Fibers" (Hirose Corporation, Japan) (no date given).
Ishida et al., "Separators for Alakaline Batteries," Chemical Abstract 121:113378q (no date given).
Ishida et al., "Separators for Cylindrical Batteries," Chemical Abstract 121:113379r (no date given).

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