Polyimide-based binder for power storage device, electrode mixture paste, negative electrode active material layer, negative electrode sheet for power storage device, and power storage device
US-12176543-B2 · Dec 24, 2024 · US
Binder composition for non-aqueous secondary battery electrode, slurry composition for non-aqueous secondary battery electrode, non-aqueous secondary battery electrode, and non-aqueous secondary battery
US10985374B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10985374-B2 |
| Application number | US-201716081135-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 2, 2017 |
| Priority date | Mar 24, 2016 |
| Publication date | Apr 20, 2021 |
| Grant date | Apr 20, 2021 |
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Abstract
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Disclosed is a binder composition for non-aqueous secondary battery electrode which comprises: a water-soluble polymer which comprises an acid group-containing monomer unit; and water, wherein the water-soluble polymer comprises the acid group-containing monomer unit in an amount of 5% to 70% by mass, and wherein the water-soluble polymer comprises water-soluble polymer particles having a radius of gyration of 200 nm or less in an amount of 95% to 100% by mass.
First claim
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The invention claimed is: 1. A binder composition for non-aqueous secondary battery electrode comprising: a water-soluble polymer which comprises an acid group-containing monomer unit; and water, wherein the water-soluble polymer comprises the acid group-containing monomer unit in an amount of 5% to 70% by mass, wherein the water-soluble polymer comprises water-soluble polymer particles having a radius of gyration of 200 nm or less in an amount of 95% to 100% by mass, wherein the water-soluble polymer further comprises a (meth)acrylamide monomer unit in an amount of 30% to 85% by mass, and wherein a mass ratio of the acid group-containing monomer unit to the (meth)acrylamide monomer unit in the water-soluble polymer is 0.05 to 1.00. 2. The binder composition for non-aqueous secondary battery electrode according to claim 1 , wherein the water-soluble polymer has a weight-average molecular weight of 100,000 to 4,000,000. 3. The binder composition for non-aqueous secondary battery electrode according to claim 1 , wherein the water-soluble polymer further comprises a hydroxyl group-containing monomer unit, and wherein the water-soluble polymer comprises the acid group-containing monomer unit in an amount of 5% to 65% by mass and comprises the hydroxyl group-containing monomer unit in an amount of 0.5% to 50% by mass. 4. A slurry composition for non-aqueous secondary battery electrode comprising: the binder composition for non-aqueous secondary battery electrode according to claim 1 ; and an electrode active material. 5. A non-aqueous secondary battery electrode comprising: an electrode substrate; and an electrode mixed material layer disposed on the electrode substrate, wherein the electrode mixed material layer is formed using the slurry composition for non-aqueous secondary battery electrode according to claim 4 . 6. A non-aqueous secondary battery comprising: a positive electrode; a negative electrode; a separator; and an electrolyte solution, wherein at least one of the positive electrode and the negative electrodes is the non-aqueous secondary battery electrode according to claim 5 . 7. The binder composition for non-aqueous secondary battery electrode according to claim 1 , wherein the water-soluble polymer has a weight-average molecular weight of 500,000 to 4,000,000, and wherein a mass ratio of the acid group-containing monomer unit to the (meth)acrylamide monomer unit in the water-soluble polymer is 0.09 to 0.89.
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Classifications
Acrylamide; Methacrylamide · CPC title
Carboxyl groups · CPC title
Use of inorganic substances as compounding ingredients · CPC title
by coating on electrode collectors · CPC title
Processes of manufacture · CPC title
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- What does patent US10985374B2 cover?
- Disclosed is a binder composition for non-aqueous secondary battery electrode which comprises: a water-soluble polymer which comprises an acid group-containing monomer unit; and water, wherein the water-soluble polymer comprises the acid group-containing monomer unit in an amount of 5% to 70% by mass, and wherein the water-soluble polymer comprises water-soluble polymer particles having a radiu…
- Who is the assignee on this patent?
- Zeon Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M4/622. 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).