Lithium-containing composite oxide, its production process, cathode active material, positive electrode for lithium ion secondary battery, and lithium ion secondary battery
US-2016301065-A1 · Oct 13, 2016 · US
Lithium secondary battery
US11362322B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11362322-B2 |
| Application number | US-201916410522-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 13, 2019 |
| Priority date | Jun 7, 2018 |
| Publication date | Jun 14, 2022 |
| Grant date | Jun 14, 2022 |
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Abstract
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Provided is a lithium secondary battery comprising a cathode, an anode, and a non-aqueous electrolyte having lithium ion conductivity. A lithium metal is precipitated on a surface of the anode during charge of the lithium secondary battery. The lithium metal is dissolved from the surface of the anode in the non-aqueous electrolyte during discharge of the lithium secondary battery. The non-aqueous electrolyte contains a solvent and a lithium salt. The solvent includes a fluorinated ether. The fluorinated ether has a fluorination ratio of more than 0% and not more than 60%.
First claim
Opening claim text (preview).
The invention claimed is: 1. A lithium secondary battery, comprising: a cathode; an anode; and a non-aqueous electrolyte having lithium ion conductivity, wherein: a lithium metal is precipitated on a surface of the anode during charge of the lithium secondary battery, the lithium metal is dissolved from the surface of the anode in the non-aqueous electrolyte during discharge of the lithium secondary battery, the non-aqueous electrolyte contains a solvent and a lithium salt, the solvent includes a fluorinated ether, and the fluorinated ether is represented by the following chemical formula: where: n represents an integer of not less than 1, R 1 is CF 3 CH 2 —, R 2 is —CH 3 or —CH 2 CF 3 , and X 1 -X 4 each are, independently, a hydrogen atom, a fluorine atom, or —CF 3 , X 1 -X 4 are not simultaneously a hydrogen atom, the fluorinated ether has a fluorination ratio of not less than 14% and not more than 60%, wherein a volume ratio of the fluorinated ether to the solvent is not less than 50%, and wherein the lithium salt contained in the non-aqueous electrolyte has a concentration of not less than 3 mol/L. 2. The lithium secondary battery according to claim 1 , wherein a volume ratio of the fluorinated ether to the solvent is not less than 60%. 3. The lithium secondary battery according to claim 1 , wherein the fluorination ratio is not more than 50%. 4. The lithium secondary battery according to claim 1 , wherein the fluorination ratio is not more than 43%. 5. The lithium secondary battery according to claim 1 , wherein: the lithium salt is composed of a lithium ion and an anion, and the anion is at least one selected from the group consisting of an anion of imide, PF 6 , and an oxalate anion. 6. The lithium secondary battery according to claim 1 , wherein the cathode comprises a cathode active material having a crystal structure which belongs to a space group R-3m.
Assignees
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Classifications
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
- H01M10/0569Primary
characterised by the solvents · CPC title
characterised by the additives · CPC title
Fluorinated solvents · CPC title
Negative electrodes · CPC title
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- What does patent US11362322B2 cover?
- Provided is a lithium secondary battery comprising a cathode, an anode, and a non-aqueous electrolyte having lithium ion conductivity. A lithium metal is precipitated on a surface of the anode during charge of the lithium secondary battery. The lithium metal is dissolved from the surface of the anode in the non-aqueous electrolyte during discharge of the lithium secondary battery. The non-aqueo…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0569. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 14 2022 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).