Batteries, separators, components, and compositions with heavy metal removal capability and related methods

Patent metadata

Field	Value
Publication number	US-11208558-B2
Application number	US-201916449686-A
Country	US
Kind code	B2
Filing date	Jun 24, 2019
Priority date	Sep 22, 2010
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

In accordance with at least certain embodiments of the present invention, a novel concept of utilizing PIMS minerals as a filler component within a microporous lead-acid battery separator is provided. In accordance with more particular embodiments or examples, the PIMS mineral (preferably fish meal, a bio-mineral) is provided as at least a partial substitution for the silica filler component in a silica filled lead acid battery separator (preferably a polyethylene/silica separator formulation). In accordance with at least selected embodiments, the present invention is directed to new or improved batteries, separators, components, and/or compositions having heavy metal removal capabilities and/or methods of manufacture and/or methods of use thereof.

First claim

The invention claimed is:

1. A lead acid battery separator having a front face and a reverse face, the separator comprising:
a porous, silica filled, polymer membrane having a backweb with integral ribs, wherein the ribs comprise of a plurality of negative cross ribs on the reverse face, and the positive face have ribs which are perpendicular to the negative cross ribs;
wherein the negative cross ribs are transverse to the longitudinal direction of the backweb.

2. The lead acid battery separator of claim 1 , wherein the membrane comprises one of the following consisting of: a microporous or macroporous thermoplastic material, preferably polyethylene, polypropylene, polyvinyl chloride, and the mixtures thereof; rubber; polyolefin; phenolic; crosslinked phenolic resin; cellulosic; glass; or combinations thereof.

3. The lead acid battery separator of claim 1 , wherein the separator may be a cut piece separator or a wrap, envelope, pouch, sleeve, or pocket type separator.

Assignees

• Daramic Llc

Inventors

• Chambers Jeffrey K
• Shah Tejas R

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/446

  Composite material consisting of a mixture of organic and inorganic materials · CPC title

• H01M10/10

  Immobilising of electrolyte · CPC title

• C08L89/00 Primary

  Compositions of proteins; Compositions of derivatives thereof (foodstuff preparations A23J3/00) · CPC title

• H01M50/463

  Separators, membranes or diaphragms characterised by their shape · CPC title