Electrode separator
AssigneeZPower, LLC
InventorsGeorge W. Adamson, David John Scanlan, Sam Bishop, Hongxia Zhou, Ximei Sun, Biying Huang, Liang Liang
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Abstract
The present invention provides a separator for use in an alkaline electrochemical cell comprising a polymer material and an inert filler comprising zirconium oxide. Examples of polymer materials useful in this invention include ABS polymer material, halogenated alkylene polymer material, and PE polymer material.
Claims119
A separator for use in a silver-zinc rechargeable battery comprising:
- a polymer material comprising ABS;
- and
- a filler comprising a zirconium oxide material,
- wherein the separator has a resistance of no more than about 2000 Ohm·cm.
The separator of either of claim 11 or 12, wherein the dispersant comprises dodecylbenzenefulfonic acid or any salt thereof.
A separator for use in a silver-zinc rechargeable battery comprising:
- a polymer material comprising from about 1 wt % to less than about 50 wt % of ABS;
- and
- a zirconium oxide material comprising a powder having a mean grain diameter of from about 40 nm to about 1000 nm,
- wherein the separator has a resistance of no more than about 2000 Ohm·cm.
A rechargeable battery comprising:
- a cathode comprising a silver material;
- an anode comprising a zinc material;
- and
- a separator comprising:
- a polymer material comprising ABS;
- and
- a zirconium oxide material,
- wherein the separator comprises greater than 10 wt % of zirconium oxide material.
A method of manufacturing a separator for use in a silver-zinc rechargeable battery comprising:
- providing a first mixture comprising an ABS polymer, a dispersant, a solvent, and a zirconium oxide material;
- and
- drying the mixture to generate a separator.
A separator for use in a silver-zinc rechargeable battery comprising:
- a polymer material comprising PVDF;
- and
- a filler comprising zirconium oxide material,
- wherein the separator has a resistance of no more than about 20 Ohm·cm.
A separator for use in a silver-zinc rechargeable battery comprising:
- a polymer comprising a copolymer, wherein the copolymer comprises PVDF-co-HFP having a mean molecular weight of greater than about 450,000 amu;
- and
- zirconium oxide powder having an mean grain diameter of less than about 0.75 microns,
- wherein the separator has a resistance of no more than about 20 Ohm·cm.
A rechargeable battery comprising:
- a cathode comprising a silver material;
- an anode comprising a zinc material;
- and
- a separator comprising a polymer material comprising PVDF and zirconium oxide powder.
A method of manufacture of a separator for use in a silver-zinc rechargeable battery comprising:
- mixing a PVDF polymer material with an aprotic solvent to form a first mixture;
- mixing the first mixture with a filler comprising zirconium oxide powder to form a second mixture;
- and
- drying the mixture to generate a separator.
The method of any one of claims 72-77, wherein the second mixture comprises greater than about 25 wt % zirconium oxide powder.
A method of manufacture of a separator for use in a silver-zinc rechargeable battery comprising:
- combining a polymer selected from PVDF homopolymer, a PVDF-copolymer, or a combination thereof, with an organic solvent to form a solution;
- mixing a powder comprising zirconium oxide and yttria into the solution to form a mixture;
- casting the mixture over a surface;
- and
- drying the mixture to form a membrane.
A separator for use in a silver-zinc rechargeable battery comprising:
- a polyolefin polymer material having a mean molecular weight of at least about 500,000 amu;
- and
- a filler comprising zirconium oxide material, wherein the zirconium oxide material comprises from about 2 mol % to about 8 mol % of yttrium oxide, and the filler is substantially free of titanium.
A rechargeable battery comprising:
- a cathode comprising a silver material;
- an anode comprising a zinc material;
- and
- a separator comprising:
- a polyolefin polymer material having a mean molecular weight of at least about 500,000 amu;
- and
- a filler comprising zirconium oxide material, wherein the zirconium oxide material comprises from about 2 mol % to about 8 mol % of yttrium oxide, and the filler is substantially free of titanium.
A method of manufacturing a separator for use in silver zinc rechargeable batteries comprising:
- combining a polyolefin polymer material and a filler to generate a mixture;
- and
- processing the mixture to form a separator,
- wherein the polyolefin polymer material has a mean molecular weight of at least about 500,000 amu, the filler comprises zirconium oxide material, wherein the zirconium oxide material comprises from about 2 mol % to about 8 mol % of yttrium oxide, and the filler is substantially free of titanium.
Dependencies are inferred from the claim text.