Battery separators having a low apparent density
US-2017179454-A1 · Jun 22, 2017 · US
Lead-acid battery separators, electrodes, batteries, and methods of manufacture and use thereof
US12051783B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12051783-B2 |
| Application number | US-202117492714-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 4, 2021 |
| Priority date | May 5, 2014 |
| Publication date | Jul 30, 2024 |
| Grant date | Jul 30, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
New or improved battery separators for lead-acid batteries that include a carbon or mineral additive applied to the separator. In possibly preferred embodiments, the battery separator may include engineered carbon materials applied to the battery separator to modify sulfate crystal formation while decreasing the detrimental consequences of excessive gas evolution into the negative electrode itself. In one embodiment, a method of enhancing the lead-acid energy storage performance of a lead-acid battery may include delivering carbon to the negative active material surface of the battery separator where the carbon may effectively enhance charge acceptance and improve life cycle performance of a lead-acid battery.
First claim
Opening claim text (preview).
The invention claimed is: 1. A battery separator for a lead-acid battery comprising, polyolefin layer laminated to a glass layer, a polymer layer, a non-woven layer, or a woven layer; and a porous carbon sheet containing at least 50% carbon positioned next to the polyolefin layer. 2. The battery separator of claim 1 , wherein the porous carbon sheet comprises at least 70% carbon. 3. The battery separator of claim 1 , wherein the porous carbon sheet comprises at least 80% carbon. 4. The battery separator of claim 1 , wherein the polyolefin is selected from polyethylene, polypropylene, and combinations thereof. 5. The battery separator of claim 1 , wherein the battery separator comprises a battery separator made of polyolefin laminated to a glass layer. 6. The battery separator of claim 1 , wherein the battery separator comprises a battery separator made of polyolefin laminated to a non-woven. 7. The battery separator of claim 1 , wherein the battery separator comprises a battery separator made of polyolefin laminated to a polymer layer. 8. The battery separator of claim 1 , wherein the battery separator comprises a battery separator made of polyolefin laminated to a woven layer. 9. The battery separator of claim 1 , wherein a surfactant, a binder, or both are also provided on a surface of the battery separator, wherein the surfactant may comprise a non-ionic surfactant or an ionic surfactant, and the binder may comprise any one of latex, liquid rubber, starch solutions, acrylonitriles, acrylates, their derivatives, polyolefins, and combinations thereof. 10. The battery separator of claim 1 , further comprising a wicking retainer mat.
Assignees
Inventors
Classifications
Ceramics · CPC title
Polyolefins · CPC title
having a layered structure · CPC title
- H01M50/431Primary
Inorganic material · CPC title
Manufacturing processes of separators, membranes or diaphragms · CPC title
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- What does patent US12051783B2 cover?
- New or improved battery separators for lead-acid batteries that include a carbon or mineral additive applied to the separator. In possibly preferred embodiments, the battery separator may include engineered carbon materials applied to the battery separator to modify sulfate crystal formation while decreasing the detrimental consequences of excessive gas evolution into the negative electrode its…
- Who is the assignee on this patent?
- Daramic Llc
- What technology area does this patent fall under?
- Primary CPC classification H01M50/431. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 30 2024 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).