US 12,191,441 B2
Microlayer membranes, improved battery separators, and methods of manufacture and use
Kang Karen Xiao, Mississauga (CA); Eric Joseph Penegar, Fort Mill, SC (US); Takahiko Kondo, Shiga (JP); Robert Nark, Fort Mill, SC (US); Eric Robert White, Fort Mill, SC (US); Xiaomin Zhang, Charlotte, NC (US); and Kristoffer K. Stokes, Lunenburg, MA (US)
Assigned to Celgard, LLC, Charlotte, NC (US)
Filed by Celgard, LLC, Charlotte, NC (US)
Filed on Aug. 29, 2023, as Appl. No. 18/239,595.
Application 18/239,595 is a division of application No. 17/365,736, filed on Jul. 1, 2021, granted, now 11,784,344.
Application 17/365,736 is a division of application No. 15/773,201, granted, now 11,056,750, issued on Jul. 6, 2021, previously published as PCT/US2016/061510, filed on Nov. 11, 2016.
Claims priority of provisional application 62/253,932, filed on Nov. 11, 2015.
Prior Publication US 2023/0411674 A1, Dec. 21, 2023
Int. Cl. H01M 10/0525 (2010.01); B01D 69/12 (2006.01); B01D 71/26 (2006.01); H01M 50/406 (2021.01); H01M 50/417 (2021.01); H01M 50/451 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 50/494 (2021.01)
CPC H01M 10/0525 (2013.01) [B01D 69/1212 (2022.08); B01D 69/1213 (2022.08); B01D 69/1216 (2022.08); B01D 71/261 (2022.08); B01D 71/262 (2022.08); H01M 50/406 (2021.01); H01M 50/417 (2021.01); H01M 50/451 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 50/494 (2021.01)] 6 Claims
OG exemplary drawing
 
1. A battery separator for a lithium battery comprising:
at least one dry-process microporous separator membrane or sub-membrane comprising a plurality of co-extruded porous polymer microlayers or nanolayers,
at least one other dry-process microporous polymer membrane;
wherein the at least one dry-process microporous separator membrane or sub-membrane and the at least one other dry-process microporous polymer membrane are laminated to each other or to a microporous polymer membrane.