Title:
改良された膜、カレンダー加工された微多孔膜、電池セパレータ、および関連する方法
Document Type and Number:
Japanese Patent JP7156942
Kind Code:
B2
Abstract:
Novel or improved microporous single or multilayer battery separator membranes, separators, batteries including such membranes or separators, methods of making such membranes, separators, and/or batteries, and/or methods of using such membranes, separators and/or batteries are provided. In accordance with at least certain embodiments, a multilayer dry process polyethylene / polypropylene / polyethylene microporous separator which is manufactured using the inventive process which includes machine direction stretching followed by transverse direction stretching and a subsequent calendering step as a means to reduce the thickness of the multilayer microporous membrane, to reduce the percent porosity of the multilayer microporous membrane in a controlled manner and/or to improve transverse direction tensile strength. In a very particular embodiment, the inventive process produces a thin multilayer microporous membrane that is easily coated with polymeric-ceramic coatings, has excellent mechanical strength properties due to its polypropylene layer or layers and a thermal shutdown function due to its polyethylene layer or layers. The ratio of the thickness of the polypropylene and polyethylene layers in the inventive multilayer microporous membrane can be tailored to balance mechanical strength and thermal shutdown properties.
Inventors:
Stokes, Christopher, Kay.
Mason, william, john
Xiao, Kang, Karen
Chang, Xiao Ming
Sammy, Barry, Jay.
Robert Moran
Polly, Jeffrey, Gordon
Step, Bryan, Earl.
Adams, Chanchin, One
Alexander, Daniel, Earl.
Williams, Chante, Pea.
Voss, Andrew, Edward
Robertson, Douglas, George
Mason, william, john
Xiao, Kang, Karen
Chang, Xiao Ming
Sammy, Barry, Jay.
Robert Moran
Polly, Jeffrey, Gordon
Step, Bryan, Earl.
Adams, Chanchin, One
Alexander, Daniel, Earl.
Williams, Chante, Pea.
Voss, Andrew, Edward
Robertson, Douglas, George
Application Number:
JP2018513825A
Publication Date:
October 19, 2022
Filing Date:
September 16, 2016
Export Citation:
Assignee:
Celguard LLC
International Classes:
H01M50/457; C08J9/00; H01M50/417; H01M50/434; H01M50/443; H01M50/451; H01M50/463; H01M50/489; H01M50/491; H01M50/494
Domestic Patent References:
| JP2005056851A | ||||
| JP2008523211A | ||||
| JP2001122998A | ||||
| JP2007311332A | ||||
| JP2013535792A | ||||
| JP2000340207A |
Foreign References:
| US20140045033 |
Attorney, Agent or Firm:
Tetsuya Mori
田中 秀▲てつ▼
Hirose Hajime
Yuki Yamada
田中 秀▲てつ▼
Hirose Hajime
Yuki Yamada