US10483525B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10483525-B2 |
| Application number | US-201615558307-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2016 |
| Priority date | Mar 24, 2015 |
| Publication date | Nov 19, 2019 |
| Grant date | Nov 19, 2019 |
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
What the patent document calls the invention.
A short plain-language summary of the technical disclosure.
Who owns or filed the patent and who is credited as inventor.
Filing, priority, publication, and grant dates set the timeline.
The legal scope of protection — read this for what is actually claimed.
Technology tags used to group this patent with similar filings.
Prior art links and similar publications in this corpus.
Official abstract text for this publication.
A non-aqueous electrolyte secondary battery having a long cycle life and generates a small amount of gas during, for example, storage in a charged state. A negative electrode in a non-aqueous electrolyte secondary battery according to an exemplary embodiment includes a negative electrode current collector and a negative electrode mixture layer formed on the negative electrode current collector. The negative electrode mixture layer contains a water-soluble polymer and a negative electrode active material containing a silicon-based active material. The water-soluble polymer contains 0.30 mol/100 g or more and 0.40 mol/100 g or less of an acrylic acid monomer unit and 10−4 mol/100 g or more and 10−3 mol/100 g or less of a tetrafunctional (meth)acrylate monomer unit. An aqueous solution containing 1% by mass of the polymer in terms of solid content has a viscosity of 0.05 Pa·s or higher and 0.70 Pa·s or lower.
Opening claim text (preview).
The invention claimed is: 1. A non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein the negative electrode includes a negative electrode current collector and a negative electrode mixture layer formed on the current collector, the negative electrode mixture layer contains a water-soluble polymer and a negative electrode active material containing a silicon-based active material, the water-soluble polymer includes 70% by mass or more of acrylamide, 0.30 mol/100 g or more and 0.40 mol/100 g or less of an acrylic acid monomer unit and 10 −4 mol/100 g or more and 10 −3 mol/100 g or less of a tetrafunctional (meth)acrylate monomer unit, and an aqueous solution containing 1% by mass of the polymer in terms of solid content has a viscosity of 0.05 Pa·s or higher and 0.70 Pa·s or lower. 2. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the negative electrode active material further contains a carbon-based active material. 3. The non-aqueous electrolyte secondary battery according to claim 2 , wherein a mass ratio of the carbon-based active material to the silicon-based active material is from 95:5 to 70:30. 4. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the water-soluble polymer includes 2.0×10 −4 mol/100 g or more and 9.0×10 −4 mol/100 g or less of the tetrafunctional (meth)acrylate monomer unit. 5. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the water-soluble polymer includes 0.32 mol/100 g or more and 0.35 mol/100 g or less of the acrylic acid monomer unit. 6. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the aqueous solution containing 1% by mass of the water-soluble polymer in terms of solid content has a viscosity of 0.10 Pa·s or higher and 0.65 Pa·s or lower. 7. The non-aqueous electrolyte secondary battery according to claim 1 , wherein an amount of the water-soluble polymer is 1% to 7% by mass relative to a mass of the negative electrode active material.
being polymers · CPC title
Li-accumulators · CPC title
Silicon or alloys based on silicon · CPC title
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title
Silica · CPC title
Related publications grouped by family.
Answers are generated from the same data shown on this page.