Title:
NONAQUEOUS-SECONDARY-BATTERY SEPARATOR AND NONAQUEOUS SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2014/136838
Kind Code:
A1
Abstract:
A nonaqueous-secondary-battery separator provided with the following: a microporous membrane; and an adhesive porous layer that is provided on one or both sides of the microporous membrane and contains a fibrillar polyvinylidene-fluoride resin. The mean pore diameter determined from the specific surface area of the microporous membrane is greater than 90 nm but no greater than 250 nm, the peel strength between the microporous membrane and the adhesive porous layer is at least 0.10 N/cm, and the fibril diameter determined from the specific surface area of the adhesive porous layer is between 50 and 70 nm, inclusive.
Inventors:
IWAI AYUMI (JP)
YOSHITOMI TAKASHI (JP)
NISHIKAWA SATOSHI (JP)
YOSHITOMI TAKASHI (JP)
NISHIKAWA SATOSHI (JP)
Application Number:
PCT/JP2014/055631
Publication Date:
September 12, 2014
Filing Date:
March 05, 2014
Export Citation:
Assignee:
TEIJIN LTD (JP)
International Classes:
H01M50/417; H01M50/426; H01M50/489; H01M50/491
Foreign References:
| JP2012209235A | 2012-10-25 | |||
| JP2006092829A | 2006-04-06 |
Other References:
LEE ET AL.: "Polyvinylidene Fluoride-co- Chlorotrifluoroethylene and Polyvinylidene Fluoride-co-Hexafluoropropylene Nanofiber- Coated Polypropylene Microporous Battery Separator Membranes", J.POLYM.SCI.PART B, vol. 51, no. 5, 2013, pages 349 - 357
ALCOUTLABI ET AL.: "Preparation and properties of nanofiber-coated composite membranes as battery separators via electrospinning", J.MATER.SCI., vol. 48, no. 6, 2013, pages 2690 - 2700, XP035157482, DOI: doi:10.1007/s10853-012-7064-0
LEE ET AL.: "Cycling performance of lithium-ion batteries assembled with a hybrid composite membrane prepared by an electrospinning method", JOURNAL OF POWER SOURCES, vol. 195, no. 18, 2010, pages 6197 - 6201
ALCOUTLABI ET AL.: "Preparation and properties of nanofiber-coated composite membranes as battery separators via electrospinning", J.MATER.SCI., vol. 48, no. 6, 2013, pages 2690 - 2700, XP035157482, DOI: doi:10.1007/s10853-012-7064-0
LEE ET AL.: "Cycling performance of lithium-ion batteries assembled with a hybrid composite membrane prepared by an electrospinning method", JOURNAL OF POWER SOURCES, vol. 195, no. 18, 2010, pages 6197 - 6201
Attorney, Agent or Firm:
TAMEYAMA, Taro (JP)
a sake -- mountain Taro (JP)
a sake -- mountain Taro (JP)
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