Patent ID: 11942656
Assignee: DARAMIC, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 15:
16. A method for improving re-chargeability and water loss of a battery having one or more plates or electrodes comprising antimony (Sb) comprises the steps of:
placing or providing a battery separator into a battery, wherein the battery separator includes a microporous polymer backweb with a serrated and staggered rib profile, wherein the separator includes an amount of surfactant coated thereon, wherein the amount of surfactant is in a range of 4.1 to 10.0 grams per square meter, wherein the surfactant has a hydrophile lipophile balance (HLB) value from 1 to 3, and
thereby decreasing water loss over an initial twenty one day period in the battery by at least 17% when compared to a battery without the surfactant on the separator.