Precursors for lithium transition metal oxide cathode materials for rechargeable batteries

Patent metadata

Field	Value
Publication number	US-9954226-B2
Application number	US-201515317162-A
Country	US
Kind code	B2
Filing date	May 29, 2015
Priority date	Jun 12, 2014
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A particulate precursor compound for manufacturing a lithium transition metal (M)-oxide powder usable as an active positive electrode material in lithium-ion batteries, wherein (M) is Ni x Mn y Co z A v , A being a dopant, wherein 0.33≤x≤0.60, 0.20≤y≤0.33, and 0.20≤z≤0.33, v≤0.05, and x+y+z+v=1, the precursor having a specific surface area PBET in m 2 /g, a tapped density PTD in g/cm 3 , a median particle size PD50 in μm, and wherein (I).

PBET

PTD
*
PD
⁢

⁢
50

≥

0.021

(

0.1566
*
x

)

-
0.0466

(
I
)

First claim

The invention claimed is:

1. A particulate precursor compound for manufacturing a lithium transition metal (M)-oxide powder usable as an active positive electrode material in lithium-ion batteries, wherein (M) is Ni x Mn y Co z A v , A being a dopant, wherein 0.33≤x≤0.60, 0.20≤y≤0.33, and 0.20≤z≤0.33, v≤0.05, and x+y+z+v=1, the precursor having a specific surface area PBET in m 2 /g, a tapped density PTD in g/cm 3 , a median particle size PD50 in μm, and
wherein

PBET

PTD
*
PD
⁢

⁢
50

≥

0.021

(

0.1566
*
x

)

-
0.0466

,

wherein:
for 0.33≤x≤0.35, the median particle size PD50, the tapped density PTD, and the median particle size are: 2.5≤PD50≤3.5, 0.90≤PTD<1.30 and 20<PBET<40; or
for 0.35<x≤0.45, PD50, PDT, and PBET are: 2.5≤PD50≤3.5, 1.30<PTD<1.45 and 12<PBET<20; or
for 0.45<x≤0.55, PD50, PDT, and PBET are: 5.0≤PD50≤9.0, 1.25<PTD<1.45 and 15<PBET<25.

2. The precursor compound of claim 1 , wherein

PBET

PTD
*
PD
⁢

⁢
50

≥

0.041

(

0.1566
*
x

)

-
0.0466

.

3. The precursor compound of claim 1 , wherein v=0, the compound having a PTD<2 g/cm 3 .

4. The precursor compound of claim 1 , wherein the precursor is a hydroxide M-OH or an oxyhydroxide M-OOH compound.

Assignees

• Umicore Nv
• Umicore Korea Ltd

Inventors

• Zhu Liang
• DePALMA Randy
• Ahn Hyo Sun

Classifications

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M4/505 Primary

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title

• C01P2004/51

  Particles with a specific particle size distribution · CPC title

• H01B1/08

  oxides · CPC title