Positive electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery
US-2020373574-A1 · Nov 26, 2020 · US
Nonaqueous electrolyte secondary battery
US10991981B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10991981-B2 |
| Application number | US-201716472561-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 14, 2017 |
| Priority date | Dec 22, 2016 |
| Publication date | Apr 27, 2021 |
| Grant date | Apr 27, 2021 |
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Abstract
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This nonaqueous electrolyte secondary battery is provided with a positive electrode, a negative electrode and a non-aqueous electrolyte. The non-aqueous electrolyte contains: a non-aqueous solvent that contains a fluorine-containing cyclic carbonate; an isocyanuric acid derivative such as triallyl isocyanurate; and a cyclic carboxylic acid anhydride such as diglycolic acid anhydride.
First claim
Opening claim text (preview).
The invention claimed is: 1. A non-aqueous electrolyte secondary battery comprising: a positive electrode including a positive electrode active material that comprises a Ni-containing lithium composite oxide as a main component; a negative electrode; and a non-aqueous electrolyte; wherein the non-aqueous electrolyte includes: a non-aqueous solvent including a fluorine-containing cyclic carbonate; an isocyanuric acid derivative represented by the formula below: wherein R 1 to R 3 are each independently —C n H 2n —CH═CH 2 or hydrogen, provided that at least one of R 1 to R 3 is —C n H 2n —CH═CH 2 ; and n is an integer; and a cyclic carboxylic anhydride represented by the formula below: wherein R 4 to R 7 are each independently hydrogen, an alkyl group, an alkene group, or an aryl group. 2. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the content of the fluorine-containing cyclic carbonate is 0.1 vol % or more and 30 vol % or less based on the total volume of the non-aqueous solvent. 3. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the content of the cyclic carboxylic anhydride is 0.1 mass % or more and 1.5 mass % or less based on the total mass of the non-aqueous electrolyte. 4. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the content of the isocyanuric acid derivative is 0.1 mass % or more and 1.5 mass % or less based on the total mass of the non-aqueous electrolyte. 5. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the cyclic carboxylic anhydride includes diglycolic anhydride. 6. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the isocyanuric acid derivative includes triallyl isocyanurate.
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Classifications
Organic electrolyte · CPC title
characterised by the solvents · CPC title
not condensed with other rings · CPC title
- H01M10/0567Primary
characterised by the additives · CPC title
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
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- What does patent US10991981B2 cover?
- This nonaqueous electrolyte secondary battery is provided with a positive electrode, a negative electrode and a non-aqueous electrolyte. The non-aqueous electrolyte contains: a non-aqueous solvent that contains a fluorine-containing cyclic carbonate; an isocyanuric acid derivative such as triallyl isocyanurate; and a cyclic carboxylic acid anhydride such as diglycolic acid anhydride.
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0567. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 27 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).