Method for continuously synthesizing precursor of lithium ion battery positive material

A technology for lithium-ion batteries and positive electrode materials, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of ineffective guarantee of product batch quality stability, low product vibration specific gravity, and low equipment utilization rate, achieving remarkable results Economic and social benefits, easy particle size distribution, and low production costs

Inactive Publication Date: 2011-06-15
LANZHOU JINCHUAN NEW MATERIAL SCI & TECH +1
View PDF6 Cites 65 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the preparation method of nickel-cobalt-manganese ternary hydroxide mainly adopts batch chemical precipitation method, which has problems such as low production efficiency, low equipment utilization rate, low product vibration specific gravity, and inability to effectively guarantee the quality stability of product batches.

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
  • Method for continuously synthesizing precursor of lithium ion battery positive material
  • Method for continuously synthesizing precursor of lithium ion battery positive material
  • Method for continuously synthesizing precursor of lithium ion battery positive material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Put the nickel-cobalt-manganese mixed metal liquid with a concentration of 40-80g / L into the reaction kettle with a metering pump, the concentration of sodium hydroxide is 100-200g / L, and the concentration of ammonia water is 30-50g / L. The reaction temperature is controlled at 40-55° C., the pH value is controlled at 7-10, the stirring rate is controlled at 200-400 r / min, and the nucleation period is controlled at 25-40 hours. The overflowed solid-liquid mixture is separated and dried at 50-100°C for 12-36 hours. The particle size distribution of the obtained ternary nickel-cobalt-manganese composite hydroxide is uniform, the D50 is 6-8 μm, and the tap density is 1.8-2.0 g / cm 3 .

Embodiment 2

[0037]Put the nickel-cobalt-manganese mixed metal liquid with a concentration of 40-80g / L into the reaction kettle with a metering pump, the concentration of sodium hydroxide is 100-200g / L, and the concentration of ammonia water is 30-50g / L. The reaction temperature is controlled at 40-55° C., the pH value is controlled at 10-12, the stirring rate is controlled at 200-400 r / min, and the nucleation period is controlled at 25-40 hours. The overflowed solid-liquid mixture is separated and dried at 100-200°C for 12-36 hours. The obtained ternary nickel-cobalt-manganese composite hydroxide has a uniform particle size distribution, a D50 of 6-8 μm, and a tap density of 1.7-1.9 g / cm 3 .

Embodiment 3

[0039] Put the nickel-cobalt-manganese mixed metal liquid with a concentration of 80-120g / L into the reaction kettle with a metering pump, the concentration of sodium hydroxide is 100-200g / L, and the concentration of ammonia water is 30-50g / L. The reaction temperature is controlled at 55-80° C., the pH value is controlled at 7-10, the stirring rate is controlled at 100-200 r / min, and the nucleation period is controlled at 45-60 hours. The overflowed solid-liquid mixture is separated and then dried at 50-120°C for 12-36 hours. The particle size distribution of the obtained ternary nickel-cobalt-manganese composite hydroxide is uniform, the D50 is 9-12 μm, and the tap density is 2.0-2.2 g / cm 3 .

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
densityaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for continuously synthesizing a precursor of a lithium ion battery positive material, relating to an improvement of a synthesis method of a nickle cobalt manganese termary positive material nickle cobalt lithium manganate of the lithium ion battery positive material. The method is characterized in that the synthesis process is as follows: merging a complexing agent ammonia, an aqueous solution of metal nickle cobalt manganese ions and a precipitator sodium hydroxide solution and then continuously adding the substances into a reaction kettle for a synthesis reaction under the strong stirring condition in the presence of protective gas; and aging, filtering and washing the effluent from the reaction kettle, and then drying to obtain the lithium ion battery positive material precursor spherical nickle cobalt manganese termary hydroxide. The method has the advantages that the preparation process is continuous, the particle size of the prepared nickle cobalt manganese compound hydroxide powder is controlled in a range of 5-20 microns, and the prepared nickle cobalt manganese compound hydroxide powder is even in distribution and excellent in electrochemistry property. The method has the advantages of high production efficiency, low production cost and significant economic and social benefits, and the energy is saved.

Description

technical field [0001] The invention discloses a continuous synthesis method for a precursor of a positive electrode material of a lithium ion battery, and relates to an improvement in a method for synthesizing a lithium ion battery positive electrode material nickel-cobalt-manganese ternary positive electrode material nickel-cobalt-lithium manganese oxide. Background technique [0002] Nickel-cobalt-manganese ternary hydroxide is mainly used in the synthesis of nickel-cobalt-manganese ternary cathode material nickel-cobalt-manganese lithium manganate, which is the positive electrode material of lithium ion batteries. [0003] Analysis of main typical related patents in China. Changsha Liyuan New Materials Co., Ltd. has applied for a patent for a preparation method of a spherical nickel-cobalt-lithium manganese oxide material (publication number: CN101229928). In the patent, the co-precipitation method is used to use carbonate as the precipitant, and a certain concentration...

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 Applications(China)
IPC IPC(8): C01G53/04C01G51/04C01G45/02H01M4/50H01M4/52
CPCY02E60/12Y02E60/10
Inventor 闫忠强雷军鹏贺建军蒲兴林朱用丁冬久徐斌蒋文全傅钟臻谭玉虎朱超王凤
Owner LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap