Non-aqueous electrolyte secondary battery and method for manufacturing the same
US-2018048023-A1 · Feb 15, 2018 · US
Positive electrode for lithium ion battery and lithium ion battery
US11024835B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11024835-B2 |
| Application number | US-201716346337-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 7, 2017 |
| Priority date | Nov 7, 2016 |
| Publication date | Jun 1, 2021 |
| Grant date | Jun 1, 2021 |
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Abstract
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A positive electrode for a lithium ion battery, the positive electrode including a positive electrode current collector, a positive electrode active material layer formed on the surface of the positive electrode current collector, and a non-aqueous liquid electrolyte including an electrolyte containing lithium ions and a non-aqueous solvent, in which the positive electrode active material layer includes a positive electrode active material and voids, the voids are filled with the non-aqueous liquid electrolyte, and a proportion of the battery capacity based on a total amount of lithium ions in the non-aqueous liquid electrolyte existing in the positive electrode active material layer with respect to the battery capacity based on a total amount of the positive electrode active material is 3.5 to 15%.
First claim
Opening claim text (preview).
The invention claimed is: 1. A positive electrode for a lithium ion battery, the positive electrode comprising: a positive electrode current collector; a positive electrode active material layer formed on a surface of the positive electrode current collector; and a non-aqueous liquid electrolyte including an electrolyte containing lithium ions and a non-aqueous solvent, wherein the positive electrode active material layer includes a positive electrode active material and voids, the voids are filled with the non-aqueous liquid electrolyte, a proportion of a battery capacity based on a total amount of lithium ions in the non-aqueous liquid electrolyte existing in the positive electrode active material layer with respect to a battery capacity based on a total amount of the positive electrode active material is 3.5 to 15%, and a concentration of the electrolyte of the non-aqueous liquid electrolyte is 2 to 5 mol/L. 2. The positive electrode for a lithium ion battery according to claim 1 , wherein a proportion of a battery capacity based on a total amount of lithium ions in the non-aqueous liquid electrolyte existing in the positive electrode active material layer with respect to a battery capacity based on a total amount of the positive electrode active material is 5 to 15%. 3. The positive electrode for a lithium ion battery according to claim 1 , wherein a thickness of the positive electrode active material layer is 100 to 900 μm. 4. The positive electrode for a lithium ion battery according to claim 1 , wherein a total volume of the voids is 35% to 60% by volume of a total volume of the positive electrode active material layer. 5. The positive electrode for a lithium ion battery according to claim 1 , wherein a concentration of the electrolyte of the non-aqueous liquid electrolyte is 2 to 3 mol/L. 6. The positive electrode for a lithium ion battery according to claim 1 , wherein the electrolyte is a sulfonylimide-based electrolyte having a fluorine atom. 7. The positive electrode for a lithium ion battery according to claim 1 , wherein the electrolyte includes at least LiN(FSO 2 ) 2 . 8. The positive electrode for a lithium ion battery according to claim 1 , wherein the electrolyte consists of LiN(FSO 2 ) 2 . 9. The positive electrode for a lithium ion battery according to claim 1 , wherein the positive electrode current collector is a resin current collector including an electrically conductive material and a resin. 10. The positive electrode for a lithium ion battery according to claim 1 , wherein the positive electrode active material is a coated positive electrode active material in which a portion or an entirety of a surface of the positive electrode active material is coated with a coating layer including a polymer compound. 11. The positive electrode for a lithium ion battery according to claim 1 , wherein the content of a binder in the positive electrode active material layer is 0.5% by weight or less based on 100% by weight of the total solid content included in the positive electrode active material layer. 12. A lithium ion battery using the positive electrode for a lithium ion battery according to claim 1 .
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Classifications
Room temperature molten salts · CPC title
being polymers · CPC title
Liquid materials · CPC title
in the form of layers, e.g. coatings · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
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- What does patent US11024835B2 cover?
- A positive electrode for a lithium ion battery, the positive electrode including a positive electrode current collector, a positive electrode active material layer formed on the surface of the positive electrode current collector, and a non-aqueous liquid electrolyte including an electrolyte containing lithium ions and a non-aqueous solvent, in which the positive electrode active material layer…
- Who is the assignee on this patent?
- Nissan Motor
- What technology area does this patent fall under?
- Primary CPC classification H01M4/13. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 01 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).