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
Nonaqueous electrolyte secondary battery porous layer
US2019386343A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019386343-A1 |
| Application number | US-201916441094-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 14, 2019 |
| Priority date | Jun 15, 2018 |
| Publication date | Dec 19, 2019 |
| Grant date | — |
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Abstract
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As a nonaqueous electrolyte secondary battery porous layer that allows a nonaqueous electrolyte secondary battery to have an improved high-rate characteristic, a nonaqueous electrolyte secondary battery porous layer is provided that includes an organic filler having a cation exchange capacity of not less than 0.5 meq/g.
First claim
Opening claim text (preview).
1 . A nonaqueous electrolyte secondary battery porous layer, comprising: an organic filler; and at least one binder resin, the organic filler having a cation exchange capacity of not less than 0.5 meq/g. 2 . The nonaqueous electrolyte secondary battery porous layer according to claim 1 , wherein the organic filler has a content of not less than 60% by weight and not more than 99.5% by weight with respect to a total weight of the nonaqueous electrolyte secondary battery porous layer. 3 . The nonaqueous electrolyte secondary battery porous layer according to claim 1 , wherein: the at least one binder resin is 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 porous layer according to claim 3 , wherein the polyamide-based resin is aramid resin. 5 . A nonaqueous electrolyte secondary battery laminated separator, comprising: a polyolefin porous film; and a nonaqueous electrolyte secondary battery porous layer according to claim 1 , the nonaqueous electrolyte secondary battery porous layer being provided on one surface or both surfaces of the polyolefin porous film. 6 . A nonaqueous electrolyte secondary battery member, comprising: a positive electrode; a nonaqueous electrolyte secondary battery porous layer according to claims 1 ; and a negative electrode, the positive electrode, the nonaqueous electrolyte secondary battery porous layer, and the negative electrode being arranged in this order. 7 . A nonaqueous electrolyte secondary battery member, comprising: a nonaqueous electrolyte secondary battery porous layer according to claim 1 . 8 . A nonaqueous electrolyte secondary battery member, comprising: a positive electrode; a nonaqueous electrolyte secondary battery laminated separator according to claim 5 ; and a negative electrode, the positive electrode, the nonaqueous electrolyte secondary battery laminated separator, and the negative electrode being arranged in this order. 9 . A nonaqueous electrolyte secondary battery, comprising: a nonaqueous electrolyte secondary battery laminated separator according to claim 5 .
Assignees
Inventors
Classifications
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
- H01M10/0585Primary
of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title
Electricity · mapped topic
Manufacturing processes of separators, membranes or diaphragms · CPC title
Particulate material · CPC title
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Frequently asked questions
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- What does patent US2019386343A1 cover?
- As a nonaqueous electrolyte secondary battery porous layer that allows a nonaqueous electrolyte secondary battery to have an improved high-rate characteristic, a nonaqueous electrolyte secondary battery porous layer is provided that includes an organic filler having a cation exchange capacity of not less than 0.5 meq/g.
- Who is the assignee on this patent?
- Sumitomo Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0585. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Dec 19 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).