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US-2016013465-A1 · Jan 14, 2016 · US
Binder composition for electrochemical device electrode, composition for electrochemical device electrode, electrode for electrochemical device, and electrochemical device
US11404695B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11404695-B2 |
| Application number | US-201816617671-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 14, 2018 |
| Priority date | Jun 19, 2017 |
| Publication date | Aug 2, 2022 |
| Grant date | Aug 2, 2022 |
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- Title
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Abstract
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A binder composition contains a water-soluble polymer and water. The water-soluble polymer includes a nitrile group-containing monomer unit and an ethylenically unsaturated carboxylic acid monomer unit, and has a weight-average molecular weight of not less than 1,000 and not more than 50,000.
First claim
Opening claim text (preview).
The invention claimed is: 1. A binder composition for an electrochemical device electrode comprising a water-soluble polymer and water, wherein the water-soluble polymer includes a nitrile group-containing monomer unit, an ethylenically unsaturated carboxylic acid monomer unit, and less than 10 mass % of other monomer units, the water-soluble polymer has a weight-average molecular weight of not less than 1,000 and not more than 50,000. 2. The binder composition for an electrochemical device electrode according to claim 1 , wherein fractional content of the nitrile group-containing monomer unit in the water-soluble polymer is not less than 20 mass % and not more than 80 mass %. 3. The binder composition for an electrochemical device electrode according to claim 1 , wherein fractional content of the ethylenically unsaturated carboxylic acid monomer unit in the water-soluble polymer is not less than 20 mass % and not more than 80 mass %. 4. The binder composition for an electrochemical device electrode according to claim 1 , wherein the nitrile group-containing monomer unit is a (meth)acrylonitrile unit. 5. The binder composition for an electrochemical device electrode according to claim 1 , wherein the ethylenically unsaturated carboxylic acid monomer unit is an ethylenically unsaturated dicarboxylic acid monomer unit. 6. The binder composition for an electrochemical device electrode according to claim 1 , further comprising a particulate polymer. 7. The binder composition for an electrochemical device electrode according to claim 6 , wherein fractional content of the water-soluble polymer is not less than 1.0 mass % and not more than 20 mass % relative to 100 mass % of the particulate polymer. 8. A composition for an electrochemical device electrode comprising: the binder composition for an electrochemical device electrode according to claim 1 ; and an electrode active material. 9. An electrode for an electrochemical device comprising: a current collector; and an electrode mixed material layer formed using the composition for an electrochemical device electrode according to claim 8 . 10. An electrochemical device comprising the electrode for an electrochemical device according to claim 9 .
Assignees
Inventors
Classifications
Binders · CPC title
Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
Processes of manufacture · CPC title
- H01M4/622Primary
being polymers · CPC title
Carbon pastes or blends; Binders or additives therein · CPC title
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Frequently asked questions
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- What does patent US11404695B2 cover?
- A binder composition contains a water-soluble polymer and water. The water-soluble polymer includes a nitrile group-containing monomer unit and an ethylenically unsaturated carboxylic acid monomer unit, and has a weight-average molecular weight of not less than 1,000 and not more than 50,000.
- 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 Aug 02 2022 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).