Nonaqueous electrolyte battery and battery pack, and vehicle
US-2017110723-A1 · Apr 20, 2017 · US
Negative electrode for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery
US10903485B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10903485-B2 |
| Application number | US-201716325557-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 22, 2017 |
| Priority date | Aug 31, 2016 |
| Publication date | Jan 26, 2021 |
| Grant date | Jan 26, 2021 |
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 negative electrode for nonaqueous electrolyte secondary batteries includes a negative electrode current collector and a negative electrode mixture layer disposed on the negative electrode current collector, and the negative electrode mixture layer contains a negative electrode active material containing lithium titanate, a binder, and a (meth)acrylic acid-based polymer. The amount of the (meth)acrylic acid-based polymer in the negative electrode mixture layer is 10 mass % or less relative to the total amount of the (meth)acrylic acid-based polymer and the binder. The amount of the (meth)acrylic acid-based polymer in a portion of the negative electrode mixture layer that extends from the surface to the middle of the negative electrode mixture layer in the thickness direction (upper region) is 60 mass % or more relative to the total amount of the (meth)acrylic acid-based polymer.
First claim
Opening claim text (preview).
The invention claimed is: 1. A negative electrode for nonaqueous electrolyte secondary batteries, the negative electrode comprising: a negative electrode current collector and a negative electrode mixture layer disposed on the negative electrode current collector, wherein the negative electrode mixture layer contains a negative electrode active material containing lithium titanate, a binder, and a (meth)acrylic acid-based polymer, and an amount of the (meth)acrylic acid-based polymer in the negative electrode mixture layer is 10 mass % or less relative to a total amount of the (meth)acrylic acid-based polymer and the binder, and an amount of the (meth)acrylic acid-based polymer in a portion of the negative electrode mixture layer that extends from a surface to a middle of the negative electrode mixture layer in a thickness direction is 60 mass % or more relative to a total amount of the (meth)acrylic acid-based polymer. 2. The negative electrode for nonaqueous electrolyte secondary batteries according to claim 1 , wherein an amount of the (meth)acrylic acid-based polymer in the negative electrode mixture layer is 0.01 mass % or more and 3 mass % or less relative to an amount of the negative electrode active material. 3. A nonaqueous electrolyte secondary battery comprising: a negative electrode and a positive electrode, wherein the negative electrode is the negative electrode for nonaqueous electrolyte secondary batteries according to claim 1 . 4. The nonaqueous electrolyte secondary battery according to claim 3 , wherein the positive electrode contains a positive electrode active material containing a lithium transition metal oxide, and the lithium transition metal oxide contains at least one of tungsten (W) and zirconium (Zr). 5. A nonaqueous electrolyte secondary battery comprising: a negative electrode and a positive electrode, wherein the negative electrode is the negative electrode for nonaqueous electrolyte secondary batteries according to claim 2 .
Assignees
Inventors
Classifications
Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title
being polymers · CPC title
Positive electrodes · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · 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 US10903485B2 cover?
- A negative electrode for nonaqueous electrolyte secondary batteries includes a negative electrode current collector and a negative electrode mixture layer disposed on the negative electrode current collector, and the negative electrode mixture layer contains a negative electrode active material containing lithium titanate, a binder, and a (meth)acrylic acid-based polymer. The amount of the (met…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/131. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 26 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).