Binder for power storage device electrode
US-2017018778-A1 · Jan 19, 2017 · US
Composition for lithium secondary battery electrodes
US2019074517A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019074517-A1 |
| Application number | US-201716082720-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 30, 2017 |
| Priority date | Apr 1, 2016 |
| Publication date | Mar 7, 2019 |
| Grant date | — |
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Abstract
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where R1 represents a hydrogen atom or a C1-C20 alkyl group.
First claim
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1 . A composition for a lithium secondary battery electrode comprising: an active material; a polyvinyl acetal resin; and an organic solvent, the polyvinyl acetal resin having a structural unit having a hydroxyl group represented by the following formula (1), a structural unit having an acetal group represented by the following formula (2), and a structural unit having a carboxyl group, the polyvinyl acetal resin containing 45 to 95 mol % of the structural unit having a hydroxyl group represented by the following formula (1): where R 1 represents a hydrogen atom or a C1-C20 alkyl group. 2 . The composition for a lithium secondary battery electrode according to claim 1 , wherein the polyvinyl acetal resin contains the structural unit having a carboxyl group in an amount of 0.01 to 5 mol %. 3 . The composition for a lithium secondary battery electrode according to claim 1 , wherein the structural unit having a carboxyl group includes at least one selected from structural units having a carboxyl group represented by the following formulae (3), (4), and (5): where R 2 , R 3 , R 4 , R 5 , and R 6 each represent a single bond or a C1-C10 saturated or unsaturated hydrocarbon, and X represents hydrogen, sodium, or potassium. 4 . The composition for a lithium secondary battery electrode according to claim 1 , wherein the polyvinyl acetal resin has a degree of polymerization of 250 to 4,000. 5 . The composition for a lithium secondary battery electrode according to claim 1 , wherein the polyvinyl acetal resin is contained in an amount of 0.01 to 12 parts by weight relative to 100 parts by weight of the active material. 6 . The composition for a lithium secondary battery electrode according to claim 1 , further comprising a conductivity imparting agent. 7 . A lithium secondary battery comprising the composition for a lithium secondary battery electrode according to claim 1 .
Assignees
Inventors
Classifications
- H01M4/622Primary
being polymers · CPC title
Condensation with aldehydes or ketones · CPC title
Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
Li-accumulators · 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 US2019074517A1 cover?
- where R1 represents a hydrogen atom or a C1-C20 alkyl group.
- Who is the assignee on this patent?
- Sekisui Chemical Co Ltd
- 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 Thu Mar 07 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).