Packaging material for power storage device and power storage device using the same
US-2018233709-A1 · Aug 16, 2018 · US
Nonaqueous electrolyte secondary battery separator
US11198778B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11198778-B2 |
| Application number | US-201816163644-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 18, 2018 |
| Priority date | Oct 20, 2017 |
| Publication date | Dec 14, 2021 |
| Grant date | Dec 14, 2021 |
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- Title
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Abstract
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As a nonaqueous electrolyte secondary battery separator having a transverse direction/machine direction crease recovery angle ratio of close to 1, a nonaqueous electrolyte secondary battery separator is provided that includes a polyolefin porous film having a ratio of a 60-degree gloss in an machine direction to a 60-degree gloss in a transverse direction which ratio is not less than 1.00.
First claim
Opening claim text (preview).
The invention claimed is: 1. A nonaqueous electrolyte secondary battery separator comprising: a polyolefin porous film, the polyolefin porous film having a ratio of a 60-degree gloss in a machine direction to a 60-degree gloss in a transverse direction of not less than 1.00. 2. The nonaqueous electrolyte secondary battery separator according to claim 1 , further comprising: an insulating porous layer. 3. The nonaqueous electrolyte secondary battery separator according to claim 2 , wherein the insulating porous layer contains at least one resin selected from the group consisting of a polyolefin, a (meth)acrylate-based resin, a fluorine-containing resin, a polyamide-based resin, a polyester-based resin, and a water-soluble polymer. 4. The nonaqueous electrolyte secondary battery separator according to claim 3 , wherein the polyamide-based resin is aramid resin. 5. A nonaqueous electrolyte secondary battery member comprising: a positive electrode; a nonaqueous electrolyte secondary battery separator according to claim 1 ; and a negative electrode, wherein the positive electrode is adjacent to the nonaqueous electrolyte secondary battery separator and the negative electrode is adjacent to the nonaqueous electrolyte secondary battery separator on a side opposite the positive electrode. 6. A nonaqueous electrolyte secondary battery comprising: a nonaqueous electrolyte secondary battery separator according to claim 1 . 7. A nonaqueous electrolyte secondary battery member comprising: a positive electrode; a nonaqueous electrolyte secondary battery separator according to claim 2 ; and a negative electrode, wherein the positive electrode is adjacent to the nonaqueous electrolyte secondary battery separator and the negative electrode is adjacent to the nonaqueous electrolyte secondary battery separator on a side opposite the positive electrode. 8. A nonaqueous electrolyte secondary battery comprising: a nonaqueous electrolyte secondary battery separator according to claim 2 .
Assignees
Inventors
Classifications
comprising layers of only organic material and layers containing inorganic material · CPC title
Polyamide resins · CPC title
- H01M50/417Primary
Polyolefins · CPC title
having a layered structure · CPC title
Polypropene · CPC title
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Frequently asked questions
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- What does patent US11198778B2 cover?
- As a nonaqueous electrolyte secondary battery separator having a transverse direction/machine direction crease recovery angle ratio of close to 1, a nonaqueous electrolyte secondary battery separator is provided that includes a polyolefin porous film having a ratio of a 60-degree gloss in an machine direction to a 60-degree gloss in a transverse direction which ratio is not less than 1.00.
- Who is the assignee on this patent?
- Sumitomo Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification H01M50/417. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 14 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).