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

Preparation method of high-dispersity high-nickel ternary precursor material

A high-dispersion, precursor technology, applied in the direction of chemical instruments and methods, electrical components, nickel compounds, etc., can solve the problems of difficult large-scale production, high production cost, complicated process, etc., to solve the problem of particle agglomeration, improve vibration Solid density, the effect of inhibiting collision and agglomeration

Active Publication Date: 2020-09-11
GEM CO LTD +1
View PDF6 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has complex procedures, high production cost, and is easy to introduce impurities, so it is not easy to produce on a large scale

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-dispersity high-nickel ternary precursor material
  • Preparation method of high-dispersity high-nickel ternary precursor material
  • Preparation method of high-dispersity high-nickel ternary precursor material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step 1, configuration contains nickel ion, cobalt ion and manganese ion and total ion concentration 2mol / L sulfate solution A, wherein the mol ratio of nickel ion, cobalt ion and manganese ion is 98:1:1, adopts concentration 10mol / L Industrial liquid caustic soda is used as precipitant solution B, and ammonia water of 1mol / L is used as complexing agent solution C;

[0036] Step 2, configure the bottom liquid D containing a certain amount of precipitant solution and complexing agent solution in the reactor, the pH of D is controlled at 12-12.2, the ammonia concentration of D is 14-16g / L, and the temperature of D is 40-42°C ; And pass into the nitrogen of flow Q=(1-2) V (V represents reactor volume) per hour below the reactor agitator as protective gas, feed nitrogen, nitrogen is the small bubble of dispersed distribution, and its diameter is less than or equal to 2mm, add the mixed salt solution A, precipitant solution B and complexing agent solution C into the above rea...

Embodiment 2

[0039] Step 1, configuration contains nickel ion, cobalt ion and manganese ion and total ion concentration 2mol / L sulfate solution A, wherein the mol ratio of nickel ion, cobalt ion and manganese ion is 96:2:2, adopts concentration 10mol / L Industrial liquid caustic soda is used as precipitant solution B, and ammonia water of 1mol / L is used as complexing agent solution C;

[0040] Step 2, configure the bottom liquid D containing a certain amount of precipitant solution and complexing agent solution in the reactor, the pH of D is controlled at 11.9-12.1, the concentration of ammonia water in D is 13-15g / L, and the temperature of D is 45-47°C ; And pass into the nitrogen of flow Q=(2-3) V (V represents reactor volume) per hour below the reactor agitator as protective gas, feed nitrogen, nitrogen is the small bubble of dispersed distribution, and its diameter is less than or equal to 2mm, add the mixed salt solution A, precipitant solution B and complexing agent solution C into th...

Embodiment 3

[0043] Step 1, configuration contains nickel ion, cobalt ion and manganese ion and total ion concentration 2mol / L sulfate solution A, wherein the mol ratio of nickel ion, cobalt ion and manganese ion is 90:5:5, adopts concentration 10mol / L Industrial liquid caustic soda is used as precipitant solution B, and ammonia water of 1mol / L is used as complexing agent solution C;

[0044] Step 2, configure the bottom liquid D containing a certain amount of precipitant solution and complexing agent solution in the reactor, the pH of D is controlled at 11.8-12, the concentration of ammonia water in D is 12-14g / L, and the temperature of D is 50-52°C ; And pass into the nitrogen of flow Q=(3-4) V (V represents reactor volume) per hour below the reactor agitator as protective gas, feed nitrogen, nitrogen is the small bubble of dispersed distribution, and its diameter is less than or equal to 2mm, add the mixed salt solution A, precipitant solution B and complexing agent solution C into 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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a high-dispersity high-nickel ternary precursor material. The preparation method comprises the following steps: step 1, preparing a mixed salt solutioncontaining nickel ions, cobalt ions and manganese ions; 2, preparing a base solution containing industrial caustic soda liquid and ammonia water in a reaction kettle, introducing nitrogen below a stirrer, adding the mixed salt solution, the industrial caustic soda liquid and the ammonia water into the reaction kettle, stirring, and carrying out a co-precipitation reaction to obtain seed crystal small particles with a particle size of 1 / 5-1 / 2 of a target particle size D50; and step 3, continuously introducing nitrogen with the gas flow of the nitrogen smaller than the gas flow of the nitrogen in the step 2, further growing to the target particle size D50 to obtain a spherical nickel-cobalt-manganese precursor, and treating to obtain the finished product material of the spherical nickel-cobalt-manganese ternary precursor. The dispersity and sphericity of the small-particle nickel-cobalt-manganese ternary precursor are improved from the seed crystal stage and the growth stage, the tap density is improved, and the energy density of the positive electrode material is improved.

Description

technical field [0001] The invention is applicable to the technical fields of inorganic compounds, organic compounds and organic polymer compounds, and is also applicable to the field of pharmaceutical compounds, and specifically relates to a preparation method of a high-dispersion high-nickel ternary precursor material. Background technique [0002] With the advantages of stable voltage, high capacity, high energy density, less self-discharge, stable cycle, low consumption, and environmental friendliness, lithium-ion batteries gradually replace lead-acid batteries, and are widely used in electric vehicles, power tools, mobile phones, notebook computers and other fields. With the development of science and technology, the energy density and safety requirements of batteries are getting higher and higher. Ternary materials have high reversible specific capacity, which can better meet the increasingly miniaturized and multifunctional requirements of electronic products. Ternary ...

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): C01G53/00H01M4/505H01M4/525H01M10/0525
CPCC01G53/44C01G53/006H01M4/505H01M4/525C01P2004/61C01P2006/40H01M10/0525Y02E60/10
Inventor 张坤黎俊许开华蒋振康李聪范亮姣孙海波薛晓斐陈康
Owner GEM CO LTD