US 12,230,769 B2
Functionalized lead acid battery separators, improved lead acid batteries, and related methods
J. Kevin Whear, Utica, KY (US); Ahila Krishnamoorthy, Karnataka (IN); and Susmitha Appikatla, Owensboro, KY (US)
Assigned to Daramic, LLC, Charlotte, NC (US)
Filed by Daramic, LLC, Charlotte, NC (US)
Filed on Jan. 30, 2022, as Appl. No. 17/588,321.
Application 17/588,321 is a division of application No. 16/543,727, filed on Aug. 19, 2019, granted, now 11,271,270.
Application 16/543,727 is a division of application No. 15/286,032, filed on Oct. 5, 2016, granted, now 10,388,931, issued on Aug. 20, 2019.
Claims priority of provisional application 62/237,174, filed on Oct. 5, 2015.
Prior Publication US 2022/0158303 A1, May 19, 2022
Int. Cl. H01M 10/12 (2006.01); H01M 50/403 (2021.01); H01M 50/431 (2021.01); H01M 50/434 (2021.01); H01M 50/437 (2021.01); H01M 50/44 (2021.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/454 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01)
CPC H01M 10/12 (2013.01) [H01M 50/403 (2021.01); H01M 50/431 (2021.01); H01M 50/434 (2021.01); H01M 50/437 (2021.01); H01M 50/44 (2021.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/454 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01)] 16 Claims
OG exemplary drawing
 
1. A lead acid battery separator comprising:
a filled porous polyolefin membrane comprising a first surface;
one or more of an absorbent glass mat (AGM), a glass mat, a pasting paper, a retainer mat, a gauntlet, or combinations thereof adjacent to said first surface; and,
wherein at least one of said filled porous polyolefin membrane or said absorbent glass mat (AGM), glass mat, pasting paper, retainer mat, gauntlet, or combinations thereof has, therein and/or thereon, a metal oxide and a material that is conductive and/or semi-conductive.