Composition for forming porous heat-resistant layer, separator including the porous heat-resistant layer, and electrochemical battery including the separator
US-2017301903-A1 · Oct 19, 2017 · US
Nonaqueous electrolyte secondary battery insulating porous layer
US10553902B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10553902-B2 |
| Application number | US-201715593413-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 12, 2017 |
| Priority date | Apr 14, 2017 |
| Publication date | Feb 4, 2020 |
| Grant date | Feb 4, 2020 |
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Abstract
Official abstract text for this publication.
A nonaqueous electrolyte secondary battery insulating porous layer usable as a member of a nonaqueous electrolyte secondary battery having an excellent cycle characteristic is provided. A nonaqueous electrolyte secondary battery insulating porous layer includes a thermoplastic resin, porosity of the nonaqueous electrolyte secondary battery insulating porous layer being not less than 25% and not more than 80%, and a ratio of a displacement amount of the nonaqueous electrolyte secondary battery insulating porous layer at tenth loading-unloading cycle to a displacement amount of the nonaqueous electrolyte secondary battery insulating porous layer at fiftieth loading-unloading cycle being not less than 100% and less than 115%.
First claim
Opening claim text (preview).
The invention claimed is: 1. A nonaqueous electrolyte secondary battery insulating porous layer comprising a thermoplastic resin, porosity of the nonaqueous electrolyte secondary battery insulating porous layer being not less than 25% and not more than 80%, a ratio of a displacement amount of the nonaqueous electrolyte secondary battery insulating porous layer at tenth loading-unloading cycle to a displacement amount of the nonaqueous electrolyte secondary battery insulating porous layer at fiftieth loading-unloading cycle being not less than 100% and less than 115%, the thermoplastic resin being a mixture of an aromatic polyester and an aromatic polyamide, a weight of the aromatic polyester being not less than 20% by weight and not more than 75% by weight with respect to a total weight of the aromatic polyester and the aromatic polyamide being 100% by weight, and a thickness of the nonaqueous electrolyte secondary battery insulating porous layer being 0.5 μm to 15 μm. 2. A nonaqueous electrolyte secondary battery laminated separator comprising: a polyolefin porous film; and a nonaqueous electrolyte secondary battery insulating porous layer recited in claim 1 . 3. A nonaqueous electrolyte secondary battery member comprising: a cathode; a nonaqueous electrolyte secondary battery insulating porous layer recited in claim 1 ; and an anode, the cathode, the nonaqueous electrolyte secondary battery insulating porous layer, and the anode being arranged in this order. 4. A nonaqueous electrolyte secondary battery comprising: a nonaqueous electrolyte secondary battery insulating porous layer recited in claim 1 . 5. A nonaqueous electrolyte secondary battery member comprising: a cathode; a nonaqueous electrolyte secondary battery laminated separator recited in claim 2 ; and an anode, the cathode, the nonaqueous electrolyte secondary battery laminated separator, and the anode being arranged in this order. 6. A nonaqueous electrolyte secondary battery comprising: a nonaqueous electrolyte secondary battery laminated separator recited in claim 2 .
Assignees
Inventors
Classifications
- H01M10/0565Primary
Polymeric materials, e.g. gel-type or solid-type · CPC title
Li-accumulators · CPC title
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US10553902B2 cover?
- A nonaqueous electrolyte secondary battery insulating porous layer usable as a member of a nonaqueous electrolyte secondary battery having an excellent cycle characteristic is provided. A nonaqueous electrolyte secondary battery insulating porous layer includes a thermoplastic resin, porosity of the nonaqueous electrolyte secondary battery insulating porous layer being not less than 25% and not…
- Who is the assignee on this patent?
- Sumitomo Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0565. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 04 2020 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).