Nonaqueous electrolyte secondary battery laminated separator
US-2017155118-A1 · Jun 1, 2017 · US
Nonaqueous electrolyte secondary battery porous layer
US2020335753A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020335753-A1 |
| Application number | US-202016849109-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 15, 2020 |
| Priority date | Apr 16, 2019 |
| Publication date | Oct 22, 2020 |
| Grant date | — |
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Abstract
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The present invention provides a nonaqueous electrolyte secondary battery porous layer which improves a long-term battery characteristic of a nonaqueous electrolyte secondary battery. The nonaqueous electrolyte secondary battery porous layer in accordance with an aspect of the present invention has a bursting strength of 3.0 kPa or more and 22.0 kPa or less.
First claim
Opening claim text (preview).
1 . A nonaqueous electrolyte secondary battery porous layer, having a bursting strength of 3.0 kPa or more and 22.0 kPa or less. 2 . The nonaqueous electrolyte secondary battery porous layer as set forth in claim 1 , comprising one or more resins selected from the group consisting of polyolefin, a (meth)acrylate resin, a fluorine-containing resin, a nitrogen-containing aromatic resin, a polyester resin, and a water-soluble polymer. 3 . The nonaqueous electrolyte secondary battery porous layer as set forth in claim 1 , comprising a nitrogen-containing aromatic resin. 4 . The nonaqueous electrolyte secondary battery porous layer as set forth in claim 2 , wherein the nitrogen-containing aromatic resin includes a polyamide resin. 5 . The nonaqueous electrolyte secondary battery porous layer as set forth in claim 4 , wherein the polyamide resin is an aramid resin. 6 . The nonaqueous electrolyte secondary battery porous layer as set forth in claim 5 , wherein the aramid resin is one or more aramid resins selected from the group consisting of poly(paraphenylene terephthalamide), poly(metaphenylene terephthalamide), and a paraphenylene terephthalamide/metaphenylene terephthalamide copolymer. 7 . The nonaqueous electrolyte secondary battery porous layer as set forth in claim 1 , comprising a heat-resistant filler. 8 . The nonaqueous electrolyte secondary battery porous layer as set forth in claim 7 , wherein the heat-resistant filler is an inorganic filler. 9 . The nonaqueous electrolyte secondary battery porous layer as set forth in claim 8 , wherein the inorganic filler contains one or more inorganic substances selected from the group consisting of alumina, boehmite, aluminum hydroxide, magnesium hydroxide, magnesium oxide, titanium oxide, and silica. 10 . A nonaqueous electrolyte secondary battery laminated separator, wherein a nonaqueous electrolyte secondary battery porous layer recited in claim 1 is stacked on one surface or both surfaces of a polyolefin porous film. 11 . A nonaqueous electrolyte secondary battery comprising: a nonaqueous electrolyte secondary battery porous layer recited in claim 1 . 12 . A nonaqueous electrolyte secondary battery comprising: a nonaqueous electrolyte secondary battery laminated separator recited in claim 10 .
Assignees
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Classifications
Polyamide resins · CPC title
Polyolefins · CPC title
Ceramics · CPC title
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
Li-accumulators · CPC title
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- What does patent US2020335753A1 cover?
- The present invention provides a nonaqueous electrolyte secondary battery porous layer which improves a long-term battery characteristic of a nonaqueous electrolyte secondary battery. The nonaqueous electrolyte secondary battery porous layer in accordance with an aspect of the present invention has a bursting strength of 3.0 kPa or more and 22.0 kPa or less.
- Who is the assignee on this patent?
- Sumitomo Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification H01M50/446. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Oct 22 2020 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).