Nonwoven fabric having cross-linking material
US-9159979-B2 · Oct 13, 2015 · US
Secondary batteries
US10985353B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10985353-B2 |
| Application number | US-201214127371-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 15, 2012 |
| Priority date | Jun 23, 2011 |
| Publication date | Apr 20, 2021 |
| Grant date | Apr 20, 2021 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention pertains to a secondary battery comprising at least one separator, said separator comprising at least one fluorinated polymer [polymer (F)], said polymer (F) comprising recurring units derived from vinylidene fluoride (VDF), hexafluoropropylene (HFP) and at least one (meth)acrylic monomer (MA) having formula (I) here below, wherein: —R 1 , R 2 and R 3 , equal to or different from each other, are independently selected from a hydrogen atom and a C 1 -C 3 hydrocarbon group, and —R OH is a C 1 -C 5 hydrocarbon moiety comprising at least one hydroxyl group.
First claim
Opening claim text (preview).
The invention claimed is: 1. A secondary battery comprising at least one separator, said separator comprising at least one fluorinated polymer [polymer (F)], said polymer (F) comprising recurring units derived from vinylidene fluoride (VDF), from 1.5% to 3.5% by moles of recurring units derived from hexafluoropropylene (HFP) and from 0.5% to 1.5% by moles of recurring units derived from hydroxyethyl acrylate (HEA) wherein the recurring units derived from vinylidene fluoride (VDF) are the complement to 100% by moles of total recurring units. 2. The secondary battery according to claim 1 , said battery being an alkaline or alkaline-earth secondary battery. 3. The secondary battery according to claim 1 , said battery being a Lithium-ion secondary battery. 4. The secondary battery according to claim 1 , wherein the polymer (F) further comprises from 1% to 10% by moles of recurring units derived from at least one other hydrogenated comonomer [comonomer (H)] or at least one other fluorinated comonomer [comonomer (F)] or both. 5. The secondary battery according to claim 1 , wherein polymer (F) comprises recurring units derived from vinylidene fluoride, 2.3% by moles of recurring units derived from hexafluoropropylene and 1.0% by moles of recurring units derived from hydroxyethyl acrylate wherein the recurring units derived from vinylidene fluoride (VDF) are the complement to 100% by moles of total recurring units. 6. The secondary battery according to claim 1 , wherein the separator is a porous separator. 7. The secondary battery according to claim 6 , wherein the porous separator is a microporous flat-sheet membrane or a non-woven cloth. 8. The secondary battery according to claim 1 , wherein the separator is a dense separator. 9. The secondary battery according to claim 8 , wherein the dense separator is a polymer electrolyte wherein at least one polymer (F) is swollen by a charge carrying medium.
Assignees
Inventors
Classifications
Acrylic resins · CPC title
- H01M50/426Primary
Fluorocarbon polymers · CPC title
Porosity · CPC title
- H01M6/06Primary
Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid · CPC title
Immobilising or gelification of electrolyte · CPC title
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Frequently asked questions
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- What does patent US10985353B2 cover?
- The present invention pertains to a secondary battery comprising at least one separator, said separator comprising at least one fluorinated polymer [polymer (F)], said polymer (F) comprising recurring units derived from vinylidene fluoride (VDF), hexafluoropropylene (HFP) and at least one (meth)acrylic monomer (MA) having formula (I) here below, wherein: —R 1 , R 2 and R 3 , equal to or differ…
- Who is the assignee on this patent?
- Abusleme Julio A, Faig Regis, Pieri Riccardo, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H01M50/426. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 20 2021 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).