Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of high compacted density nickel cobalt manganate lithium ncm523 ternary material

A technology of nickel-cobalt lithium manganese oxide and ternary materials, which is applied in electrical components, battery electrodes, circuits, etc., can solve the problems of restricting the use of materials, low compaction density, and low conductivity, so as to improve the degree of compactness and high The effect of energy density and stable quality

Active Publication Date: 2016-09-07
永州昊利新材料科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The positive electrode material nickel cobalt manganese oxide NCM523 ternary material for lithium ion batteries has the advantages of high voltage platform, large specific capacity, good cycle performance at room temperature, high energy density, and small self-discharge, but compared with lithium cobalt oxide, its The main disadvantages are low electrical conductivity and low compaction density, which greatly restricts the use of this material in lithium-ion batteries with high energy density.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of high compacted density nickel cobalt manganate lithium ncm523 ternary material
  • Preparation method of high compacted density nickel cobalt manganate lithium ncm523 ternary material
  • Preparation method of high compacted density nickel cobalt manganate lithium ncm523 ternary material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] High compacted density nickel cobalt lithium manganese oxide NCM523 ternary material B1

[0034] The average particle size (D50) obtained in the comparative example is 9.3 μ m, and the specific surface area is 40.2 m 2 / g of precursor oxide (Ni 0.5 co 0.2 mn 0.3 ) 2 O, sieved and average particle size (D50) is 5.85 μ m battery grade lithium carbonate according to Li:Ni 0.5 co 0.2 mn 0.3 =1.06:1 mole is carried out proportioning, adding the magnesia of 5.6 μ m in average particle size (D50) simultaneously, make the magnesium element mass content be 0.15% of the total mass of the mixture in the mixture, the speed of the mixer is 45 rpm Minutes, the mixer uses a dry method for 3 hours to fully mix.

[0035] The mixture obtained above was put into a sagger for compaction, heated at a constant temperature of 965° C. in an air atmosphere for 16 hours for roasting reaction, and naturally cooled for 8 hours after completion, the powder was taken out, pulverized, and siev...

Embodiment 2

[0037] High compacted density nickel cobalt lithium manganese oxide NCM523 ternary material B2

[0038] The average particle size (D50) obtained in the comparative example is 9.3 μ m, and the specific surface area is 40.2 m 2 / g of precursor oxide (Ni 0.5 co 0.2 mn 0.3 ) 2 O, sieved and average particle size (D50) is 5.85 μ m battery grade lithium carbonate according to Li:Ni 0.5 co 0.2 mn 0.3 =1.08:1 mole is carried out proportioning, and adding average particle size (D50) simultaneously is the magnesia of 5.6 μ m, makes the magnesium element mass content be 0.20% of the total mass of the mixture in the mixture, and the mixing machine rotating speed is 45 revs / Minutes, the mixer uses a dry method for 4 hours to fully mix.

[0039] The mixture obtained above was put into a sagger for compaction, heated at a constant temperature of 965° C. in an air atmosphere for 16 hours for roasting reaction, and naturally cooled for 8 hours after completion, the powder was taken out...

Embodiment 3

[0041] High compacted density nickel cobalt lithium manganese oxide NCM523 ternary material B3

[0042] The average particle size (D50) obtained in the comparative example is 9.3 μ m, and the specific surface area is 40.2 m 2 / g of precursor oxide (Ni 0.5 co 0.2 mn 0.3 ) 2 O, sieved and average particle size (D50) is 5.85 μ m battery grade lithium carbonate according to Li:Ni 0.5 co 0.2 mn 0.3 =1.06:1 mole is carried out proportioning, and adding average particle size (D50) simultaneously is the magnesium hydroxide of 5.6 μ m, makes the magnesium element mass content be 0.15% of the total mass of the mixture in the mixture, and the mixing machine rotating speed is 55 revs / Minutes, the mixer uses a dry method for 3 hours to fully mix.

[0043] The mixture obtained above was put into a sagger for compaction, heated at a constant temperature of 945° C. for 16 hours in an air atmosphere to carry out roasting reaction, and naturally cooled for 8 hours after completion, the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
densityaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of a high compaction density lithium nickel cobalt manganese oxide NCM523 ternary material. According to the high compaction density lithium nickel cobalt manganese oxide NCM523 ternary material prepared with the method, a proper amount of magnesium compound is added in a material sintering process for doping, so that the sizes of single-crystal particles in lithium nickel cobalt manganese oxide NCM523 ternary material particles are increased, the density of the particles is improved, a firm microscopic structural change is formed, and the compaction density of lithium nickel cobalt manganese oxide NCM523 anode material is improved. The material has the characteristics of high energy density, low cost, simplicity in preparation technology, easiness in realization for industrialization and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of new energy materials, and relates to a preparation method of high compacted density lithium nickel cobalt manganese oxide NCM523 ternary material used for lithium ion batteries. Background technique [0002] In order to gradually solve the energy shortage and air pollution problems that restrict the current economic development, lithium-ion batteries have the advantages of high working voltage, high energy density, long cycle life, less pollution, no memory effect, small size, light weight, and no environmental pollution. In recent years, it has achieved rapid development in technology, production and market, and has formed a large new industry. [0003] The positive electrode material nickel cobalt manganese oxide NCM523 ternary material for lithium ion batteries has the advantages of high voltage platform, large specific capacity, good cycle performance at room temperature, high energy de...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/505H01M4/525
CPCH01M4/505H01M4/525Y02E60/10
Inventor 衡凯赵志兵王燕舞万国莉
Owner 永州昊利新材料科技有限公司