IP Library › Granted Patent US 7,927,741
Granted Patent B2
US 7,927,741 · App. 12/524,274 · Granted Apr 19, 2011

Lithium transition metal oxide having layered structure

Assignee: Mitsui Mining & Smelting Co., Ltd.
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Quick Facts
Patent No.
US 7,927,741
App. No.
12/524,274
Granted
Apr 19, 2011
Kind
B2
Abstract

In a lithium transition metal oxide having a layered structure, one is provided, which is particularly excellent as a positive electrode active material of a battery on board of an electric vehicle or a hybrid vehicle in particular. A lithium transition metal oxide having a layered structure is proposed, wherein the ratio of the crystallite diameter determined by Measurement Method 1 according to the Rietveld method with respect to the mean powder particle diameter (D50) determined by the laser diffraction/scattering-type particle size distribution measurement method is 0.05 to 0.20.

Claims (412)

1. A lithium transition metal oxide having a lithium transition metal oxide represented by General Formula Li 1+x M 1−x O 2 (M: transition metal) as a main component and containing the three elements Mn, Co and Ni as transition metals (M), wherein x in the General Formula is from 0.01 to 0.20; and

having a layered structure, wherein the ratio of the crystallite diameter as determined by the Measurement Method 1 according to the Rietveld method carried out under the conditions shown in Table 2 with respect to the mean powder particle diameter (D50) as determined by a laser diffraction/scattering-type particle size distribution measurement method is 0.05 to 0.20 and the crystallite diameter as determined by the Measurement Method 1 is 0.1 μm to 0.5 μm,

wherein the 90% cumulative diameter (D90) as determined by a laser diffraction/scattering-type particle size distribution measurement method is 2.0 μm to 10.0 μm.

TABLE 2

<Measurement Method 1 According to the Rietveld Method>

Measurement Device

X-ray Diffractomater using Cu-Kα beam

Analysis Parameters

FundamentalParameter

Analysis Range

Diffraction Angle 2θ = 10-120°

Analysis Software

Topas Version3

Refinement Range

Rwp <8.0, GOF <2.0

(Machine Specs,

Conditions, etc.)

Sample disp(mm)

Refine

Detector

PSD

Detector Type

VANTEC-1

High Voltage

5616

V

Discr. Lower Level

0.35

V

Discr. Window Width

0.15

V

Grid Lower Level

0.075

V

Grid Window Width

0.524

V

Flood Field Correction

Disabled

Primary radius

250

mm

Secondary radius

250

mm

Receiving slit width

0.1436626

mm

Divergence angle

0.3°

Filament Length

12

mm

Sample Length

25

mm

Receiving Slit Length

12

mm

Primary Sollers

2.623°

Secondary Sollers

2.623°

Lorentzian, 1/Cos

0.01630098

Th

Det. 1 voltage

760.00

V

Det. 1 gain

80.000000

Det. 1 discr. 1 LL

0.690000

Det. 1 discr. 1 WW

1.078000

Scan Mode

Continuous Scan

Scan Type

Locked Coupled

Spinner Speed

15

rpm

Divergence Slit

0.300°

Start

15.000000

Time per step

1

s

Increment

0.01460

#steps

7152

Generator voltage

35

kV

Generator current

40

mA.

2. A lithium transition metal oxide having a lithium transition metal oxide represented by General Formula Li 1+x M 1−x O 2 (M: transition metal) as a main component and containing the three elements Mn Co and Ni as transition metals (M), wherein x in the General Formula is from 0.01 to 0.20; and

having a layered structure, wherein the ratio of the crystallite diameter as determined by the Measurement Method 2 according to the Rietveld method carried out under the conditions shown in Table 3 with respect to the mean powder particle diameter (D50) as determined by a laser diffraction/scattering-type particle size distribution measurement method is 0.03 to 0.13 and the crystallite diameter as determined by the Measurement Method 2 is 0.01 μm to 0.50 μm,

wherein the 90% cumulative diameter (D90) as determined by a laser diffraction/scattering type particle size distribution measurement method is 2.0 μm to 10.0 μm.

TABLE 3

<Measurement Method 2 According to the Rietveld Method>

Measurement Device

X-ray Diffractomater using Cu-Kα beam

Analysis Parameters

FundamentalParameter

Analysis Range

Diffraction Angle 2θ = 15-120°

Analysis Software

Topas Version3

Refinement Range

Rwp <5.0, GOF <1.3

(Machine Specs,

Conditions, etc.)

Sample disp(mm)

Refine

Detector

PSD

Detector Type

VANTEC-1

High Voltage

5616

V

Discr. Lower Level

0.45

V

Discr. Window Width

0.15

V

Grid Lower Level

0.075

V

Grid Window Width

0.524

V

Flood Field Correction

Disabled

Primary radius

250

mm

Secondary radius

250

mm

Receiving slit width

0.1436626

mm

Divergence angle

0.3°

Filament Length

12

mm

Sample Length

25

mm

Receiving Slit Length

12

mm

Primary Sollers

2.623°

Secondary Sollers

2.623°

Lorentzian, 1/Cos

0.01630098

Th

Det. 1 voltage

760.00

V

Det. 1 gain

80.000000

Det. 1 discr. 1 LL

0.690000

Det. 1 discr. 1 WW

1.078000

Scan Mode

Continuous Scan

Scan Type

Locked Coupled

Spinner Speed

15

rpm

Divergence Slit

0.300°

Start

15.000000

Time per step

1

s

Increment

0.01460

#steps

7152

Generator voltage

35

kV

Generator current

40

mA.

3. The lithium transition metal oxide according to claim 1 , wherein said mean powder particle diameter (D50) as determined by a laser diffraction/scattering-type particle size distribution measurement method is 1.0 μm to 4.0 μm.

4. The lithium transition metal oxide according to claim 2 wherein said mean powder particle diameter (D50) as determined by a laser diffraction/scattering-type particle size distribution measurement method is 1.0 μm to 4.0 μm.

5. The lithium transition metal oxide according to claim 1 , wherein the specific surface area of the lithium transition metal oxide is 0.3 to 2.0 m 2 /g.

6. The lithium transition metal oxide according to claim 2 , wherein the specific surface area of the lithium transition metal oxide is 0.3 to 2.0 m 2 /g.

7. The lithium transition metal oxide according to claim 1 , wherein the Tap density of the lithium transition metal oxide is 1.4 to 2.5 g/cm 3 .

8. The lithium transition metal oxide according to claim 2 , wherein the Tap density of the lithium transition metal oxide is 1.4 to 2.5 g/cm 3 .

9. The lithium transition metal oxide according to claim 1 , wherein the concentration of magnetically-attaching material is less than 200 ppb.

10. The lithium transition metal oxide according to claim 2 , wherein the concentration of magnetically-attaching material is less than 200 ppb.

11. A lithium battery comprising the lithium transition metal oxide according to claim 1 as a positive electrode active material.

12. A lithium battery comprising the lithium transition metal oxide according to claim 2 as a positive electrode active material.

13. A lithium transition metal oxide having a layered structure, represented by General Formula Li 1+x M 1−x O 2 (M: transition metal) as a main component and containing the three elements Mn, Co and Ni as transition metals (M),

wherein x in the General Formula is from 0.01 to 0.20,

wherein the ratio of the crystallite diameter as determined by the Measurement Method 1 according to the Rietveld method carried out under the conditions shown in Table 2 with respect to the mean powder particle diameter (D50) as determined by a laser diffraction/scattering-type particle size distribution measurement method is 0.05 to 0.20 and the crystallite diameter as determined by the Measurement Method 1 is 0.1 μm to 0.5 μm, and

wherein said mean powder particle diameter (D50) is 1.0 μm to 4.0 μm.

TABLE 2

<Measurement Method 1 According to the Rietveld Method>

Measurement Device

X-ray Diffractomater using Cu-Kα beam

Analysis Parameters

FundamentalParameter

Analysis Range

Diffraction Angle 2θ = 10-120°

Analysis Software

Topas Version3

Refinement Range

Rwp <8.0, GOF <2.0

(Machine Specs,

Conditions, etc.)

Sample disp(mm)

Refine

Detector

PSD

Detector Type

VANTEC-1

High Voltage

5616

V

Discr. Lower Level

0.35

V

Discr. Window Width

0.15

V

Grid Lower Level

0.075

V

Grid Window Width

0.524

V

Flood Field Correction

Disabled

Primary radius

250

mm

Secondary radius

250

mm

Receiving slit width

0.1436626

mm

Divergence angle

0.3°

Filament Length

12

mm

Sample Length

25

mm

Receiving Slit Length

12

mm

Primary Sollers

2.623°

Secondary Sollers

2.623°

Lorentzian, 1/Cos

0.01630098

Th

Det. 1 voltage

760.00

V

Det. 1 gain

80.000000

Det. 1 discr. 1 LL

0.690000

Det. 1 discr. 1 WW

1.078000

Scan Mode

Continuous Scan

Scan Type

Locked Coupled

Spinner Speed

15

rpm

Divergence Slit

0.300°

Start

15.000000

Time per step

1

s

Increment

0.01460

#steps

7152

Generator voltage

35

kV

Generator current

40

mA.

14. A lithium transition metal oxide having a layered structure, represented by General Formula Li 1+x M 1−x O 2 (M: transition metal) as a main component and containing the three elements Mn, Co and Ni as transition metals (M),

wherein x in the General Formula is from 0.01 to 0.20,

wherein the ratio of the crystallite diameter as determined by the Measurement Method 2 according to the Rietveld method carried out under the conditions shown in Table 3 with respect to the mean powder particle diameter (D50) as determined by a laser diffraction/scattering-type particle size distribution measurement method is 0.03 to 0.13 and the crystallite diameter as determined by the Measurement Method 2 is 0.01 μm to 0.50 μm, and

wherein said mean powder particle diameter (D50) is 1.0 μm to 4.0 μm.

TABLE 3

<Measurement Method 2 According to the Rietveld Method>

Measurement Device

X-ray Diffractomater using Cu-Kα beam

Analysis Parameters

FundamentalParameter

Analysis Range

Diffraction Angle 2θ = 15-120°

Analysis Software

Topas Version3

Refinement Range

Rwp <5.0, GOF <1.3

(Machine Specs,

Conditions, etc.)

Sample disp(mm)

Refine

Detector

PSD

Detector Type

VANTEC-1

High Voltage

5616

V

Discr. Lower Level

0.45

V

Discr. Window Width

0.15

V

Grid Lower Level

0.075

V

Grid Window Width

0.524

V

Flood Field Correction

Disabled

Primary radius

250

mm

Secondary radius

250

mm

Receiving slit width

0.1436626

mm

Divergence angle

0.3°

Filament Length

12

mm

Sample Length

25

mm

Receiving Slit Length

12

mm

Primary Sollers

2.623°

Secondary Sollers

2.623°

Lorentzian, 1/Cos

0.01630098

Th

Det. 1 voltage

760.00

V

Det. 1 gain

80.000000

Det. 1 discr. 1 LL

0.690000

Det. 1 discr. 1 WW

1.078000

Scan Mode

Continuous Scan

Scan Type

Locked Coupled

Spinner Speed

15

rpm

Divergence Slit

0.300°

Start

15.000000

Time per step

1

s

Increment

0.01460

#steps

7152

Generator voltage

35

kV

Generator current

40

mA.

Assignments (2)
CHANGE OF NAME Recorded Mar 31, 2026
From: MITSUI MINING AND SMELTING COMPANY, LIMITED
To: MITSUI KINZOKU COMPANY, LIMITED
Reel/Frame 075357/0342 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 23, 2009
From: TAKEUCHI, TOMOYA; KAGEI, SHINYA; KUMADA, NAOKI; MIYANOHARA, KEISUKE
To: MITSUI MINING & SMELTING CO., LTD.
Reel/Frame 022998/0547 →
Priority Claims (1)
JP 2007-017155 · Jan 26, 2007 · national
Continuity (1)
Related Publication 20100117025A1 · May 13, 2010