Process for drying of bibw2992, of its salts and of solid pharmaceutical formulations comprising this active ingredient
US-2017079980-A1 · Mar 23, 2017 · US
Nonaqueous elctrolyte secondary battery insulating porous layer
US10916755B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10916755-B2 |
| Application number | US-201715593396-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 12, 2017 |
| Priority date | Apr 14, 2017 |
| Publication date | Feb 9, 2021 |
| Grant date | Feb 9, 2021 |
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- Title
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Abstract
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The present invention provides a nonaqueous electrolyte secondary battery insulating porous layer having an excellent withstand voltage property and an excellent leakage resistance characteristic. The nonaqueous electrolyte secondary battery insulating porous layer having a trabecular structure including voids, which trabecular structure has an anisotropy value of 1.30 to 2.10, the anisotropy value being calculated from a three-dimensional image showing a void part and a solid content part on respective two gradation levels, the three-dimensional image being prepared by analyzing images of cross sections obtained by making observation at intervals of 20 nm in a thickness direction from a surface of the nonaqueous electrolyte secondary battery insulating porous layer with use of a FIB-SEM having a magnification of 6500 times.
First claim
Opening claim text (preview).
The invention claimed is: 1. A nonaqueous electrolyte secondary battery insulating porous layer comprising: a filler, and an aromatic polymer thermoplastic resin, the nonaqueous electrolyte secondary battery insulating porous layer containing the filler in an amount of not less than 20% by weight and not more than 95% by weight relative to a total weight of the nonaqueous electrolyte secondary battery insulating porous layer; the nonaqueous electrolyte secondary battery insulating porous layer having a trabecular structure including voids, which trabecular structure has an anisotropy value of 1.30 to 2.10, the anisotropy value being calculated from a three-dimensional image showing a void part and a solid content part on respective two gradation levels, the three-dimensional image being prepared by analyzing images of cross sections obtained by making observation at intervals of 20 nm in a thickness direction from a surface of the nonaqueous electrolyte secondary battery insulating porous layer using a FIB-SEM having a magnification of 6500 times. 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 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. 4. A nonaqueous electrolyte secondary battery comprising: a nonaqueous electrolyte secondary battery laminated separator recited in claim 2 . 5. 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. 6. A nonaqueous electrolyte secondary battery comprising: a nonaqueous electrolyte secondary battery insulating porous layer recited in claim 1 .
Assignees
Inventors
Classifications
- H01M10/0525Primary
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
comprising layers of only organic material and layers containing inorganic material · CPC title
Polyolefins · CPC title
Porosity · CPC title
Synthetic resins, e.g. thermoplastics or thermosetting resins · CPC title
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- What does patent US10916755B2 cover?
- The present invention provides a nonaqueous electrolyte secondary battery insulating porous layer having an excellent withstand voltage property and an excellent leakage resistance characteristic. The nonaqueous electrolyte secondary battery insulating porous layer having a trabecular structure including voids, which trabecular structure has an anisotropy value of 1.30 to 2.10, the anisotropy v…
- Who is the assignee on this patent?
- Sumitomo Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 09 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).