Non-aqueous electrolytic solution and non-aqueous electrolyte secondary battery using the same
US-2016294008-A1 · Oct 6, 2016 · US
Lithium ion secondary battery and method of manufacturing same
US2018287201A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018287201-A1 |
| Application number | US-201815934408-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 23, 2018 |
| Priority date | Apr 3, 2017 |
| Publication date | Oct 4, 2018 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A lithium ion secondary battery at least includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode at least includes a positive electrode active material and a binder. The positive electrode active material includes more than or equal to 0.08 mass % of a lithium carbonate and a remainder of a lithium complex oxide. The binder is at least one selected from a group consisting of polytetrafluoroethylene, polyethylene oxide, and carboxymethylcellulose. The electrolyte solution at least includes a solvent and a lithium salt. The solvent is at least one of N,N-dimethylformamide and dimethylacetamide. A concentration of the lithium salt in the electrolyte solution is more than or equal to 1.9 mol/l and less than or equal to 2.3 mol/l.
First claim
Opening claim text (preview).
What is claimed is: 1 . A lithium ion secondary battery at least comprising a positive electrode, a negative electrode, and an electrolyte solution, the positive electrode at least including a positive electrode active material and a binder, the positive electrode active material including more than or equal to 0.08 mass % of a lithium carbonate and a remainder of a lithium complex oxide, the binder being at least one selected from a group consisting of polytetrafluoroethylene, polyethylene oxide, and carboxymethylcellulose, the electrolyte solution at least including a solvent and a lithium salt, the solvent being at least one of N,N-dimethylformamide and dimethylacetamide, a concentration of the lithium salt in the electrolyte solution being more than or equal to 1.9 mol/l and less than or equal to 2.3 mol/l. 2 . The lithium ion secondary battery according to claim 1 , wherein the positive electrode active material includes more than or equal to 0.10 mass % of the lithium carbonate and a remainder of the lithium complex oxide. 3 . The lithium ion secondary battery according to claim 1 , wherein the lithium complex oxide has a lamellar rock salt type structure. 4 . The lithium ion secondary battery according to claim 1 , wherein the electrolyte solution has an electric conductivity of more than or equal to 9.73 mS/cm and less than or equal to 19.84 mS/cm. 5 . A method of manufacturing a lithium ion secondary battery, the method comprising: preparing a positive electrode active material by exposing a lithium complex oxide to carbon dioxide; preparing a positive electrode paste by at least mixing the positive electrode active material, a binder, and water; manufacturing a positive electrode by drying the positive electrode paste; manufacturing a negative electrode; preparing an electrolyte solution at least including a solvent and a lithium salt; and manufacturing a lithium ion secondary battery at least including the positive electrode, the negative electrode, and the electrolyte solution, the positive electrode active material being prepared to include more than or equal to 0.08 mass % of a lithium carbonate and a remainder of the lithium complex oxide, the binder being at least one selected from a group consisting of polytetrafluoroethylene, polyethylene oxide, and carboxymethylcellulose, the electrolyte solution being prepared such that the solvent is at least one of N,N-dimethylformamide and dimethylacetamide and a concentration of the lithium salt is more than or equal to 1.9 mol/l and less than or equal to 2.3 mol/l.
Assignees
Inventors
Classifications
- H01M10/0525Primary
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
fluorinated polymers · CPC title
Alloys (collectors of lead alloys H01M4/685) · CPC title
characterised by the solvents · CPC title
characterised by the solvent · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2018287201A1 cover?
- A lithium ion secondary battery at least includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode at least includes a positive electrode active material and a binder. The positive electrode active material includes more than or equal to 0.08 mass % of a lithium carbonate and a remainder of a lithium complex oxide. The binder is at least one select…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- 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 Thu Oct 04 2018 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).