Positive electrode active material and preparation method thereof, secondary battery, battery module, battery pack and electrical device
US-2024387819-A1 · Nov 21, 2024 · US
Transition Metal Precursor Having Low Tap Density And Lithium Transition Metal Oxide Having High Particle Strength
US2022135428A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022135428-A1 |
| Application number | US-202217578881-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 19, 2022 |
| Priority date | Feb 13, 2013 |
| Publication date | May 5, 2022 |
| Grant date | — |
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.
Disclosed are a lithium transition metal oxide and a lithium secondary battery, in which a ratio of average particle diameter D50 of the lithium transition metal oxide to average particle diameter D50 of a transition metal precursor for preparation of the lithium transition metal oxide satisfies the condition represented by Equation 3 below:0<AverageparticlediameterD50oflithiumtransitionmetaloxideAverageparticlediameterD50oftransitionmetalprecursor<1.2.(3)
First claim
Opening claim text (preview).
1 . A lithium transition metal oxide in which a ratio of average particle diameter D50 of the lithium transition metal oxide to average particle diameter D50 of a transition metal precursor for preparation of the lithium transition metal oxide satisfies the condition represented by Equation 3 below: 0 < Average particle diameter D50 of lithium transition metal oxide Aaverage particle diameter D50 of transition metal precursor < 1.2 . ( 3 ) 2 . The lithium transition metal oxide according to claim 1 , wherein the lithium transition metal oxide comprises Ni, Mn and Co. 3 . The lithium transition metal oxide according to claim 2 , wherein the lithium transition metal oxide is a compound represented by Formula 4 below: Li a Ni x Mn y Co z M w O 2-t A t (4) wherein 0<a≤1.2, 0<x≤0.9, 0<y≤0.9, 0<z≤0.9, 0≤w≤0.3, 2≤a+x+y+z+w≤2.3, and 0≤t<0.2; M is at least one metal cation selected from Al, Cu, Fe, Mg, B, Cr, or transition metals of 2 period in the Periodic Table of the Elements; and A is at least one monovalent or divalent anion. 4 . The lithium transition metal oxide according to claim 3 , wherein, in Formula 4, x>y and x>z. 5 . The lithium transition metal oxide according to claim 1 , wherein the transition metal precursor consists of transition metal hydroxide particles represented by Formula 2 below: NiCoMn(OH 1-x ) 2 (2) wherein 0≤x≤0.5; and wherein a tap density of the transition metal precursor is from 1.3 g/cc to 1.6 g/cc, and a ratio of tap density to average particle diameter D50 of the precursor satisfies a condition represented by Equation 1 below: 2000 < Tap density Average particle diameter D50 of transition
Assignees
Inventors
Classifications
- C01G53/82Primary
Compounds containing nickel, with or without oxygen or hydrogen, and containing two or more other elements · CPC title
Positive electrodes · CPC title
Li-accumulators · CPC title
Powder tap density · CPC title
Energy storage using batteries · 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 US2022135428A1 cover?
- Disclosed are a lithium transition metal oxide and a lithium secondary battery, in which a ratio of average particle diameter D50 of the lithium transition metal oxide to average particle diameter D50 of a transition metal precursor for preparation of the lithium transition metal oxide satisfies the condition represented by Equation 3 below:0<AverageparticlediameterD50oflithiumtra…
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification C01G53/82. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu May 05 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).