Positive electrode active material and preparation method thereof, secondary battery, battery module, battery pack and electrical device
US-2024387819-A1 · Nov 21, 2024 · US
Power storage device
US8945772B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8945772-B2 |
| Application number | US-201213644263-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 4, 2012 |
| Priority date | Oct 7, 2011 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 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 power storage device a positive electrode including a positive electrode active material layer and a negative electrode including a negative electrode active material layer. The positive electrode active material layer includes a plurality of particles of x[Li 2 MnO 3 ]-(1−x)[LiCo 1/3 Mn 1/3 Ni 1/3 O 2 ] (obtained by assigning 0.5 to x, for example) which is a positive electrode active material, and multilayer graphene with which the plurality of particles of the positive electrode active material are at least partly connected to each other. In the multilayer graphene, a plurality of graphenes are stacked in a layered manner. The graphene contains a six-membered ring composed of carbon atoms, a poly-membered ring which is a seven or more-membered ring composed of carbon atoms, and an oxygen atom bonded to one or more of the carbon atoms in the six-membered ring and the poly-membered ring, which is a seven or more-membered ring.
First claim
Opening claim text (preview).
What is claimed is: 1. A power storage device comprising: a positive electrode including a positive electrode active material layer; and a negative electrode including a negative electrode active material layer, wherein the positive electrode active material layer comprises a first particle and a second particle, each of the first particle and the second particle comprising x[Li 2 MnO 3 ]-(1−x)[LiCo 1/3 Mn 1/3 Ni 1/3 O 2 ] which is a positive electrode active material, and mul…
Assignees
Inventors
Classifications
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · 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 US8945772B2 cover?
- A power storage device a positive electrode including a positive electrode active material layer and a negative electrode including a negative electrode active material layer. The positive electrode active material layer includes a plurality of particles of x[Li 2 MnO 3 ]-(1−x)[LiCo 1/3 Mn 1/3 Ni 1/3 O 2 ] (obtained by assigning 0.5 to x, for example) which is a positive electrode active materi…
- Who is the assignee on this patent?
- Semiconductor Energy Lab
- 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 Feb 03 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).