Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Lithium secondary battery
US8980474B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8980474-B2 |
| Application number | US-201213434680-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 29, 2012 |
| Priority date | Aug 31, 2011 |
| Publication date | Mar 17, 2015 |
| Grant date | Mar 17, 2015 |
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 secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a current collector, an active material layer on the current collector and including an amorphous silicon oxide represented by SiO x (0.95<x<1.7), and an SEI layer on the active material layer and including about 70 area % or more of protrusion parts having a size of about 5 nm to 300 nm during charging of the battery.
First claim
Opening claim text (preview).
What is claimed is: 1. A lithium secondary battery comprising: a positive electrode, a negative electrode comprising: a current collector, an active material layer on the current collector, the active material layer comprising an amorphous silicon oxide represented by SiO x wherein 0.95<x<1.7 and a carbon layer coated on at least a portion of the amorphous silicon oxide, wherein the carbon layer has a graphitization degree defined by a G peak with a full width at half maximu…
Assignees
Inventors
Classifications
Electricity · mapped topic
Electricity · mapped topic
- H01M4/625Primary
Electricity · mapped topic
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8980474B2 cover?
- A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a current collector, an active material layer on the current collector and including an amorphous silicon oxide represented by SiO x (0.95<x<1.7), and an SEI layer on the active material layer and including about 70 area % or more of protrusion parts having a siz…
- Who is the assignee on this patent?
- Kim Tae-Gon, Chun Hee-Joon, Kim Joon-Sup, and 7 more
- What technology area does this patent fall under?
- Primary CPC classification H01M4/625. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 17 2015 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).