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
Positive electrode active substance particles for non-aqueous electrolyte secondary batteries and process for producing the same, and non-aqueous electrolyte secondary battery
US9515315B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9515315-B2 |
| Application number | US-201314380523-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 22, 2013 |
| Priority date | Feb 23, 2012 |
| Publication date | Dec 6, 2016 |
| Grant date | Dec 6, 2016 |
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.
The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries, comprising an oxide having a spinel structure and comprising at least Li and Mn as main components and an oxide comprising at least Li and Zr, in which the oxide comprising at least Li and Zr forms a mixed phase comprising two or more phases, and a content of the oxide comprising at least Li and Zr in the positive electrode active substance particles is 0.1 to 4% by weight. The present invention provides positive electrode active substance particles for non-aqueous electrolyte secondary batteries which are excellent in high-temperature characteristics and a process for producing the positive electrode active substance particles, and a non-aqueous electrolyte secondary battery.
First claim
Opening claim text (preview).
The invention claimed is: 1. Positive electrode active substance particles for a non-aqueous electrolyte secondary battery, comprising: an oxide having a spinel structure and comprising at least Li and Mn; and an oxide comprising at least Li and Zr, wherein the oxide comprising at least Li and Zr forms a mixed phase comprising two or more phases, and a content of the oxide comprising at least Li and Zr in the positive electrode active substance particles is 0.1 to 4% by weight, and wherein the mixed phase of the oxide comprising at least Li and Zr comprises (i) a first phase comprising Li 2 ZrO 3 and (ii) a second phase comprising at least one other phase selected from the group consisting of Li 4 ZrO 4 , Li 6 Zr 2 O 7 and Li 8 ZrO 6 , and a ratio of the first phase to the second phase in the mixed phase is 99:1 to 92:8. 2. The positive electrode active substance particles for a non-aqueous electrolyte secondary battery according to claim 1 , wherein the oxide comprising at least Li and Zr has a crystallite size of 100 to 600 nm. 3. A process for producing the positive electrode active substance particles for non aqueous electrolyte secondary batteries a non-aqueous electrolyte secondary battery as claimed in claim 1 , comprising the steps of: mixing the lithium/manganese composite oxide having a spinel structure and comprising at least Li and Mn with 0.1 to 4% by weight of the oxide comprising at least Li and Zr. 4. A non-aqueous electrolyte secondary battery using the positive electrode active substance particles as claimed in claim 1 .
Assignees
Inventors
Classifications
- H01M4/364Primary
as mixtures · 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
spinel-type (AB2O4) · CPC title
by d-values or two theta-values, e.g. as X-ray diagram · CPC title
- C01G25/00Primary
Compounds of zirconium · 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 US9515315B2 cover?
- The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries, comprising an oxide having a spinel structure and comprising at least Li and Mn as main components and an oxide comprising at least Li and Zr, in which the oxide comprising at least Li and Zr forms a mixed phase comprising two or more phases, and a content of the oxide…
- Who is the assignee on this patent?
- Toda Kogyo Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M4/364. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 06 2016 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).