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US-12176528-B2 · Dec 24, 2024 · US
Positive electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery
US9819026B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9819026-B2 |
| Application number | US-201414423944-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 30, 2014 |
| Priority date | Jan 31, 2013 |
| Publication date | Nov 14, 2017 |
| Grant date | Nov 14, 2017 |
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Abstract
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A positive electrode for a non-aqueous electrolyte secondary battery, comprising: a positive electrode current collector and a positive electrode active substance layer formed upon the positive electrode current collector. The positive electrode active substance layer has a positive electrode active substance and a melamine-acid salt being a salt comprising melamine and acid.
First claim
Opening claim text (preview).
The invention claimed is: 1. A positive electrode for use in a non-aqueous electrolyte secondary battery, the positive electrode comprising a positive electrode current collector and a positive electrode active material layer formed on the positive electrode current collector, the positive electrode active material layer having a positive electrode active material and a melamine-acid salt being a salt comprising melamine and acid, the melamine-acid salt having a size smaller than the positive electrode active material, wherein the melamine-acid salt is melamine polyphosphate having a solubility of 0.5% or less in a non-aqueous electrolytic solution serving as a liquid non-aqueous electrolyte, and represented by chemical formula (2): and wherein content of the melamine-acid salt is 3% or less by mass based on the positive electrode active material layer. 2. The positive electrode for a non-aqueous electrolyte secondary battery according to claim 1 , wherein the melamine-acid salt is contained at 1% or more by mass based on the positive electrode active material layer. 3. The positive electrode for a non-aqueous electrolyte secondary battery according to claim 1 , wherein the positive electrode active material layer comprises an electrically conductive material and a binder. 4. A non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte, the positive electrode comprising a positive electrode current collector and a positive electrode active material layer formed on the positive electrode current collector, the positive electrode active material layer having a positive electrode active material and a melamine-acid salt being a salt comprising melamine and acid, the melamine-acid salt having a size smaller than the positive electrode active material, wherein the melamine-acid salt is melamine polyphosphate having a solubility of 0.5% or less in a non-aqueous electrolytic solution serving as a liquid non-aqueous electrolyte, and represented by chemical formula (2): and wherein content of the melamine-acid salt is 3% or less by mass based on the positive electrode active material layer. 5. The positive electrode for a non-aqueous electrolyte secondary battery according to claim 1 , wherein a particle of the melamine polyphosphate is present close to the positive electrode active material. 6. The positive electrode for a non-aqueous electrolyte secondary battery according to claim 1 , wherein a particle of the melamine polyphosphate is in contact with the positive electrode active material. 7. The positive electrode for a non-aqueous electrolyte secondary battery according to claim 1 , wherein a plurality of particles of the melamine polyphosphate are in contact with a surface of the positive electrode active material.
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Classifications
Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
by coating on electrode collectors · CPC title
- H01M4/628Primary
Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · 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 US9819026B2 cover?
- A positive electrode for a non-aqueous electrolyte secondary battery, comprising: a positive electrode current collector and a positive electrode active substance layer formed upon the positive electrode current collector. The positive electrode active substance layer has a positive electrode active substance and a melamine-acid salt being a salt comprising melamine and acid.
- Who is the assignee on this patent?
- Sanyo Electric Co
- What technology area does this patent fall under?
- Primary CPC classification H01M4/628. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 14 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).