Separator for secondary battery, manufacturing method thereof, method for manufacturing secondary battery comprising the separator and secondary battery manufactured by the method
US-12183949-B2 · Dec 31, 2024 · US
Porous membrane
US9837650B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9837650-B2 |
| Application number | US-201514787904-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 2, 2015 |
| Priority date | Jul 29, 2014 |
| Publication date | Dec 5, 2017 |
| Grant date | Dec 5, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
A porous membrane is provided having a compound having an ionic group and a hydrophobic group, a metal oxide, and a binder resin. The content of the compound having an ionic group and a hydrophobic group is 0.2 to 2 parts by mass relative to 100 parts by mass of the metal oxide.
First claim
Opening claim text (preview).
The invention claimed is: 1. A porous membrane comprising a compound having an ionic group and a hydrophobic group, a metal oxide, and a binder resin, wherein the content of the compound having an ionic group and a hydrophobic group is 0.2 to 2 parts by mass with respect to 100 parts by mass of the metal oxide, and wherein a moisture content of the porous membrane is less than 0.15% by mass. 2. The porous membrane according to claim 1 , wherein the SP value of the compound having an ionic group and a hydrophobic group is 13 (cal/cm 3 ) 1/2 or less. 3. The porous membrane according to claim 1 , wherein the ionic group is an anionic group. 4. The porous membrane according to claim 1 , wherein the hydrophobic group is a hydrocarbon group, a group containing a fluorocarbon group, or a group containing silicon. 5. The porous membrane according to claim 4 , wherein the fluorocarbon group is a fluoroalkyl group. 6. The porous membrane according to claim 1 , wherein the binder resin is a water-soluble resin. 7. The porous membrane according to claim 1 , wherein the metal oxide is α-alumina. 8. A laminated porous film comprising the porous membrane according to claim 1 and another porous membrane that is different from the porous membrane, wherein these are laminated. 9. A non-aqueous electrolyte secondary battery separator comprising the laminated porous film according to claim 8 . 10. A non-aqueous electrolyte secondary battery comprising the non-aqueous electrolyte secondary battery separator according to claim 9 . 11. A non-aqueous electrolyte secondary battery separator comprising the porous membrane according to claim 1 . 12. A non-aqueous electrolyte secondary battery comprising the non-aqueous electrolyte secondary battery separator according to claim 11 .
Assignees
Inventors
Classifications
Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties · CPC title
- H01M50/491Primary
Porosity · CPC title
- H01M2/166Primary
Electricity · mapped topic
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Electricity · mapped topic
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- What does patent US9837650B2 cover?
- A porous membrane is provided having a compound having an ionic group and a hydrophobic group, a metal oxide, and a binder resin. The content of the compound having an ionic group and a hydrophobic group is 0.2 to 2 parts by mass relative to 100 parts by mass of the metal oxide.
- Who is the assignee on this patent?
- Sumitomo Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification H01M50/491. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 05 2017 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).