US 11,721,872 B2
Polylactam coated separator membranes for lithium ion secondary batteries and related coating formulations
Insik Jeon, Ithaca, NY (US)
Assigned to Celgard, LLC, Charlotte, NC (US)
Filed by Celgard, LLC, Charlotte, NC (US)
Filed on Nov. 24, 2020, as Appl. No. 17/103,741.
Application 17/103,741 is a division of application No. 15/962,018, filed on Apr. 25, 2018, granted, now 10,879,514.
Application 15/962,018 is a division of application No. 14/982,466, filed on Dec. 29, 2015, granted, now 9,985,263, issued on May 29, 2018.
Claims priority of provisional application 62/099,636, filed on Jan. 5, 2015.
Claims priority of provisional application 62/097,199, filed on Dec. 29, 2014.
Prior Publication US 2021/0083253 A1, Mar. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 50/417 (2021.01); H01M 50/489 (2021.01); H01M 50/446 (2021.01); H01M 10/0525 (2010.01)
CPC H01M 50/417 (2021.01) [H01M 50/489 (2021.01); H01M 10/0525 (2013.01); H01M 50/446 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A microporous battery separator membrane coated on one or both sides with a polylactam ceramic coating which comprises a polylactam, a ceramic and a polyvinyl alcohol in a range of 0.1 to 90 weight percent compared to polylactam.