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

Patent metadata

Field	Value
Publication number	US-9683101-B2
Application number	US-201113239440-A
Country	US
Kind code	B2
Filing date	Sep 22, 2011
Priority date	Sep 22, 2010
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

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 battery separator for a lead acid battery having phosphate induced metal stabilization (PIMS) mineral particles containing naturally occurring apatite as a filler component, said PIMS mineral particles binding at least a portion of heavy metal, said heavy metal including lead (Pb), wherein the PIMS mineral particles have a D 50 particle size from 10 microns to 80 microns, and wherein the battery separator has a thickness of from 0.1 mm to 4.0 mm.

2. The battery separator of claim 1 , wherein the PIMS mineral being selected from one of fish bone or fish meal.

3. The battery separator of claim 1 , wherein the separator is a porous polyethylene and silica filled battery separator having the PIMS mineral particles substituted for at least a portion of the silica filler.

4. In a battery, the improvement comprising the battery separator of claim 1 .

5. In a method of producing a silica filled battery separator for a lead acid battery, the improvement comprising: substituting at least one phosphate induced metal stabilization (PIMS) mineral filler containing naturally occurring apatite for at least a portion of the silica filler, said PIMS mineral filler binding at least a portion of heavy metal, said heavy metal including lead (Pb), wherein the PIMS mineral filler comprises particles having a D 50 particle size from 10 microns to 80 microns, and wherein the battery separator has a thickness of from 0.1 mm to 4.0 mm.

6. A lead acid battery, comprising: a housing containing a positive electrode spaced apart from a negative electrode with a porous separator located between the positive electrode and the negative electrode and an electrolyte in ionic communication between the positive electrode and the negative electrode, and wherein the separator includes a filler comprising a phosphate induced metal stabilization (PIMS) mineral containing naturally occurring apatite, said PIMS mineral binding at least a portion of heavy metal, said heavy metal including lead (Pb), wherein the PIMS mineral comprises particles having a D 50 particle size from 10 microns to 80 microns, and wherein the separator has a thickness of from 0.1 mm to 4.0 mm.

7. The battery of claim 6 , wherein at least one of the housing, positive electrode, negative electrode, and electrolyte includes said PIMS mineral.

8. The battery of claim 6 , wherein at least two of the housing, positive electrode, negative electrode, and electrolyte include said PIMS mineral.

9. The battery of claim 6 , wherein at least three of the housing, positive electrode, negative electrode, and electrolyte include said PIMS mineral.

10. In a lead acid battery, the improvement comprising at least one of:
a separator comprising a filler having at least one phosphate induced metal stabilization (PIMS) mineral filler containing naturally occurring apatite, said PIMS mineral binding at least a portion of heavy metal, said heavy metal including lead (Pb);
a silica filled microporous lead-acid battery separator comprising a filler having at least one phosphate induced metal stabilization (PIMS) mineral filler containing naturally occurring apatite provided as at least a partial substitution for the silica filler therein, said PIMS mineral filler binding at least a portion of heavy metal, said heavy metal including lead (Pb); or
a silica filled microporous polyethylene lead-acid battery separator comprising a filler having at least one phosphate induced metal stabilization (PIMS) mineral filler containing naturally occurring apatite provided as at least a partial substitution for the silica filler therein, said PIMS mineral binding at least a portion of heavy metal, said heavy metal including lead (Pb); or combinations thereof,
wherein the PIMS mineral filler comprises particles having a D 50 particle size from 10 microns to 80 microns, and wherein the separator has a thickness of from 0.1 mm to 4.0 mm.

11. A battery separator for a lead acid battery having a polymer component and a phosphate induced metal stabilization (PIMS) mineral containing apatite as filler component, said PIMS mineral binding at least a portion of heavy metal, said heavy metal including lead (Pb), wherein the PIMS mineral comprises particles having a D 50 particle size from 10 microns to 80 microns, and wherein the battery separator has a thickness of from 0.1 mm to 4.0 mm.

12. In a method of producing a silica filled battery separator, the improvement comprising: substituting at least one phosphate induced metal stabilization (PIMS) mineral containing apatite for at least a portion of the silica filler, said PIMS mineral binding at least a portion of heavy metal, said heavy metal including lead (Pb), wherein the PIMS mineral comprises particles having a D 50 particle size from 10 microns to 80 microns, and wherein the battery separator has a thickness of from 0.1 mm to 4.0 mm.

13. A lead acid battery, comprising: a housing containing a positive electrode spaced apart from a negative electrode with a porous separator located between the positive electrode and the negative electrode and an electrolyte in ionic communication between the positive electrode and the negative electrode, and wherein the separator includes a filler comprising a phosphate induced metal stabilization (PIMS) mineral containing apatite, said PIMS mineral binding at least a portion of heavy metal, said heavy metal including lead (Pb), wherein the PIMS mineral comprises particles having a D 50 particle size from 10 microns to 80 microns, and wherein the separator has a thickness of from 0.1 mm to 4.0 mm.

14. In a lead acid battery, the improvement comprising at least one of:
a separator comprising a filler having at least one phosphate induced metal stabilization (PIMS) mineral filler containing apatite, said PIMS mineral filler binding at least a portion of heavy metal, said heavy metal including lead (Pb);
a silica filled microporous lead-acid battery separator comprising a filler having at least one phosphate induced metal stabilization (PIMS) mineral filler containing apatite provided as at least a partial substitution for the silica filler therein, said PIMS mineral filler binding at least a portion of heavy metal, said heavy metal including lead (Pb); or
a silica filled microporous polyethylene lead-acid battery separator comprising a filler having at least one phosphate induced metal stabilization (PIMS) mineral filler containing apatite provided as at least a partial substitution for the silica filler therein, said PIMS mineral filler binding at least a portion of heavy metal, said heavy metal including lead (Pb); or combinations thereof,
wherein the PIMS mineral filler comprises particles having a D 50 particle size from 10 microns to 80 microns, and wherein the separator has a thickness of from 0.1 mm to 4.0 mm.

15. A method for reducing or eliminating hydration shorts in a lead-acid battery comprising the step of:
providing the lead-acid battery with a separator including a phosphate induced metal stabilization (PIMS) mineral as a filler component, said PIMS mineral binding at least a portion of heavy metal, said heavy metal including lead (Pb), wherein the PIMS mineral comprises particles having a D 50 particle size from 10 microns to 80 microns, and wherein the separator has a thickness of from 0.1 mm to 4.0 mm.

16. The method of claim 15 wherein the PIMS mineral particles contain naturally occurring apatite.

17. The method of claim 15 wherein the PIMS mineral being selected from one of fish bone or fish meal.

18. The battery separator of claim 1 , whe

Assignees

• Chambers Jeffrey K
• Shah Tejas R
• Daramic Llc

Inventors

• Chambers Jeffrey K
• Shah Tejas R

Classifications

• C08L89/00 Primary

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

• H01M10/10

  Immobilising of electrolyte · CPC title

• H01M2/18

  Electricity · mapped topic

• H01M2/166

  Electricity · mapped topic

• H01M50/446

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