Binder for non-aqueous secondary battery, composition for non-aqueous secondary battery functional layer, functional layer for non-aqueous secondary battery, and non-aqueous secondary battery
US-2017309916-A1 · Oct 26, 2017 · US
Secondary-battery porous membrane composition, secondary-battery porous membrane and secondary battery
US9917287B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9917287-B2 |
| Application number | US-201515114949-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 3, 2015 |
| Priority date | Feb 14, 2014 |
| Publication date | Mar 13, 2018 |
| Grant date | Mar 13, 2018 |
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Abstract
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A composition for a porous membrane of a secondary battery including a non-conductive particle and a water-soluble polymer, wherein the water-soluble polymer contains 80% by weight or more of a (meth)acrylamide monomer unit, and the water-soluble polymer has a storage modulus at 150° C. of 2.0×10 5 Pa or more; and a porous membrane manufactured therefrom and a secondary battery including the same.
First claim
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The invention claimed is: 1. A composition for a porous membrane of a secondary battery, comprising a non-conductive particle and a water-soluble polymer, wherein the water-soluble polymer contains 80% by weight or more of a (meth)acrylamide monomer unit, and the water-soluble polymer has a storage modulus at 150° C. of 2.0×10 5 Pa or more. 2. The composition for a porous membrane of a secondary battery according to claim 1 , wherein a glass transition temperature obtained by measuring dynamic viscoelasticity of the water-soluble polymer is 150 to 200° C. 3. The composition for a porous membrane of a secondary battery according to claim 1 , wherein the water-soluble polymer has a weight average molecular weight of 2.0×10 5 to 1.00×10 6 . 4. The composition for a porous membrane of a secondary battery according to claim 1 , wherein the water-soluble polymer contains an acid group-containing monomer unit. 5. A porous membrane for a secondary battery, obtained by forming a layer of the composition for a porous membrane of a secondary battery according to claim 1 , and drying the formed layer. 6. A secondary battery comprising the porous membrane for a secondary battery according to claim 5 .
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Classifications
with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title
Polyethene · CPC title
Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title
Homopolymers or copolymers of acrylamide or methacrylamide · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
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- What does patent US9917287B2 cover?
- A composition for a porous membrane of a secondary battery including a non-conductive particle and a water-soluble polymer, wherein the water-soluble polymer contains 80% by weight or more of a (meth)acrylamide monomer unit, and the water-soluble polymer has a storage modulus at 150° C. of 2.0×10 5 Pa or more; and a porous membrane manufactured therefrom and a secondary battery including the s…
- Who is the assignee on this patent?
- Zeon Corp
- What technology area does this patent fall under?
- Primary CPC classification C09D133/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 13 2018 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).