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

Claim 0:
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.