Alkaline electrochemical cells with separator and electrolyte combination
US-2017098865-A9 · Apr 6, 2017 · US
Separator for alkaline cells
US11670823B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11670823-B2 |
| Application number | US-201816646469-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 14, 2018 |
| Priority date | Sep 15, 2017 |
| Publication date | Jun 6, 2023 |
| Grant date | Jun 6, 2023 |
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Abstract
Official abstract text for this publication.
An alkaline electrochemical cell includes a cathode; a gelled anode having an anode active material and an electrolyte; and a separator disposed between the cathode and the anode; wherein the separator includes a non-conductive, porous material having a mean pore size of about 1 micron to about 5 microns, a maximum pore size of about 19 microns, and an air permeability of about 0.5 cc/cm 2 /s to about 3.8 cc/cm 2 /s at 125 Pa.
First claim
Opening claim text (preview).
What is claimed is: 1. An alkaline electrochemical cell separator comprising a non-conductive, porous, fibrous, alkaline resistant material, wherein the separator has a mean pore size of about 0.5 micron to about 3.8 microns, a maximum pore size of about 19 microns, an air permeability of about 0.5 cc/cm 2 /s to about 3.8 cc/cm 2 /s at 125 Pa, and a dry thickness of about 20 microns to about 150 microns. 2. The alkaline electrochemical cell separator of claim 1 , wherein the non-conductive, porous, fibrous material is non-woven. 3. The alkaline electrochemical cell separator of claim 2 , wherein the non-conductive, porous, fibrous material comprises polyvinyl alcohol. 4. The alkaline electrochemical cell separator of claim 1 , wherein the non-conductive, porous, fibrous material comprises polyvinyl alcohol. 5. The alkaline electrochemical cell separator of claim 1 , wherein the separator has an air permeability of from about 500 cc/cm 2 /min to about 3000 cc/cm 2 /min, at 1 KPa. 6. The alkaline electrochemical cell separator of claim 1 , wherein the separator has a basis weight of about 20 g/m 2 to about 32 g/m 2 . 7. The alkaline electrochemical cell separator of claim 1 , wherein the separator has a dry thickness of from about 60 microns to about 120 microns. 8. The alkaline electrochemical cell separator of claim 1 , wherein the separator is permeable to hydroxide ions and water. 9. An alkaline electrochemical cell separator comprising a non-conductive, porous, fibrous, alkaline resistant material, wherein the separator has a mean pore size of about 0.5 micron to about 3.8 microns, a maximum pore size of about 19 microns, and an air permeability of about 240 cc/cm 2 /min to about 1824 cc/cm 2 /min, at 1 KPa.
Assignees
Inventors
Classifications
of manganese · CPC title
Gel electrode · CPC title
Immobilising of electrolyte · CPC title
Synthetic resins, e.g. thermoplastics or thermosetting resins · CPC title
Alkaline electrolytes · CPC title
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- What does patent US11670823B2 cover?
- An alkaline electrochemical cell includes a cathode; a gelled anode having an anode active material and an electrolyte; and a separator disposed between the cathode and the anode; wherein the separator includes a non-conductive, porous material having a mean pore size of about 1 micron to about 5 microns, a maximum pore size of about 19 microns, and an air permeability of about 0.5 cc/cm 2 /s t…
- Who is the assignee on this patent?
- Energizer Brands Llc
- What technology area does this patent fall under?
- Primary CPC classification H01M4/244. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 06 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).