Precursor for preparing of lithium composite transition metal oxide

Patent metadata

Field	Value
Publication number	US-9608267-B2
Application number	US-201414541324-A
Country	US
Kind code	B2
Filing date	Nov 14, 2014
Priority date	Jul 9, 2012
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

Disclosed is a precursor for preparing a lithium composite transition metal oxide. More particularly, a transition metal precursor, including a composite transition metal compound represented by Formula 1 below, used to prepare a lithium transition metal oxide:

Ni a M b Mn 1−(a+b) (O 1−x ) 2   (1)
wherein M is at least one selected form the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and Period II transition metals; and 0.2≦a≦0.25, 0≦b≦0.1, and 0<x<0.5.

First claim

The invention claimed is:

1. A transition metal precursor for preparing a lithium composite transition metal oxide comprising a composite transition metal compound represented by Formula 1 below:
Ni a M b Mn 1−(a+b) (OH 1−x ) 2   (1)

wherein M is Ti;
0.2≦a≦0.25;
0≦b≦0.1; and
0<x<0.5.

2. The transition metal precursor according to claim 1 , wherein x is 0.2 or more and less than 0.5.

3. The transition metal precursor according to claim 1 , wherein x is 0.3 or more and less than 0.5.

4. The transition metal precursor according to claim 1 , comprising the composite transition metal compound in an amount of 30 wt % or more based on a total amount of the transition metal precursor.

5. The transition metal precursor according to claim 4 , comprising the composite transition metal compound in an amount of 50 wt % or more.

Assignees

• Lg Chemical Ltd

Inventors

• Park Byung Chun
• Kang Seong Hoon
• Kang Minsuk
• Jung Wang Mo
• Shin Ho Suk
• Park Sang Min
• Min Geungi

Classifications

• C01G53/82 Primary

  Compounds containing nickel, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• H01M2220/10

  Batteries in stationary systems, e.g. emergency power source in plant · CPC title

• C01P2002/54

  one element only · CPC title

• H01M10/052

  Li-accumulators · CPC title

• C01G53/54

  of the type (Mn2O4)-, e.g. Li(NixMn2-x)O4 or Li(MyNixMn2-x-y)O4 · CPC title