US 11,942,656 B2
Battery separators, batteries and related methods
Surendra K. Mittal, Bangalore (IN); Jeffrey K. Chambers, Philpot, KY (US); and Jörg Deiters, Ettenheim (DE)
Assigned to Daramic, LLC, Charlotte, NC (US)
Filed by Daramic, LLC, Charlotte, NC (US)
Filed on Nov. 5, 2015, as Appl. No. 14/933,062.
Application 14/933,062 is a continuation of application No. PCT/US2014/064033, filed on Nov. 5, 2014.
Claims priority of provisional application 62/075,960, filed on Nov. 6, 2014.
Prior Publication US 2016/0126522 A1, May 5, 2016
Int. Cl. H01M 2/16 (2006.01); H01M 2/18 (2006.01); H01M 10/04 (2006.01); H01M 10/12 (2006.01); H01M 50/417 (2021.01); H01M 50/449 (2021.01); H01M 50/451 (2021.01); H01M 50/463 (2021.01); H01M 50/466 (2021.01); H01M 50/469 (2021.01); H01M 50/489 (2021.01)
CPC H01M 50/463 (2021.01) [H01M 50/417 (2021.01); H01M 50/449 (2021.01); H01M 50/451 (2021.01); H01M 50/466 (2021.01); H01M 50/469 (2021.01); H01M 10/12 (2013.01); H01M 50/489 (2021.01); H01M 2220/20 (2013.01); Y02E 60/10 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A battery comprising:
a separator having a microporous polymer backweb with a serrated and staggered rib profile, the backweb comprising a polymer, one or more fillers, and one or more plasticizers or oils,
wherein the separator has an amount of surfactant coated thereon; both;
wherein the amount of surfactant is in a range of about 4.1 to 10.0 grams per square meter;
wherein the surfactant has a hydrophile lipophile balance (HLB) value from 1 to 3; and
one or more plates or electrodes, at least one plate or electrode comprising antimony (Sb);
wherein the battery has an improved water loss over an initial twenty one day period of at least 17% compared to a battery without the surfactant.