Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of nickel composite hydroxide and its manufacture method

A composite hydroxide and composite salt technology, which is applied in the field of lithium-ion batteries, achieves the effects of simple preparation method, excellent comprehensive performance, and excellent comprehensive performance

Active Publication Date: 2021-08-31
HUNAN SHANSHAN ENERGY TECH CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the above patents have only solved a certain unilateral problem of nickel composite hydroxide by controlling the preparation conditions of nickel composite hydroxide, and all of them are whether the inside of the nickel composite hydroxide particle is compacted, whether the primary particle size in the secondary particle is No mention at all on consistent issues

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
  • A kind of nickel composite hydroxide and its manufacture method
  • A kind of nickel composite hydroxide and its manufacture method
  • A kind of nickel composite hydroxide and its manufacture method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of nickel composite hydroxide, its general formula is Ni 0.9 co 0.05 mn 0.05 (OH) 2 , the nickel composite hydroxide is a spherical secondary particle with a narrow particle size distribution, the primary particles constituting the secondary particle have good size consistency, the average particle diameter D50 of the secondary particle is 9.5 μm, and the center of the secondary particle is compacted.

[0045] The preparation method of nickel composite hydroxide in the present embodiment may further comprise the steps:

[0046] (1) In the 50L reactor, under the protection of a nitrogen atmosphere, add a nickel compound salt solution with a total metal ion concentration of 2.05mol / L, a 6mol / L sodium hydroxide solution and 10mol / L ammonia liquid, and control the reaction kettle The internal pH value is 12.4, the ammonia value is 4g / L, the reaction temperature is 50°C, the stirring speed is 50Hz, and the crystal nucleus slurry with a particle size of 1.8μm is pre...

Embodiment 2

[0054] A kind of nickel composite hydroxide, its general formula is Ni 0.9 co 0.05 mn 0.05 (OH) 2 , the secondary particle average particle size D50 is 7 μm, and the preparation method of the nickel composite hydroxide comprises the following steps:

[0055] (1) In the 50L reactor 1, under the protection of a nitrogen atmosphere, add a nickel compound salt solution with a total metal ion concentration of 2.05mol / L, a 6mol / L sodium hydroxide solution and 10mol / L ammonia liquid to control the reaction The pH value in the kettle is 12.4, the ammonia value is 4g / L, the reaction temperature is 50°C, and the stirring speed is 50Hz, and a crystal nucleus slurry with a particle size of 1.8μm is prepared;

[0056] (2) in the crystal nucleus slurry that obtains in step (1), continue to add metal ion total concentration and be the nickel compound salt solution of 1.5mol / L, the sodium hydroxide solution of 6mol / L and the ammoniacal liquor of 10mol / L, control The pH value in the reacti...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a nickel composite hydroxide, the general formula of which is Ni 1‑x m x (OH) 2 , wherein, 0.6≤x<1, M is at least one of Co, Ti, Zr, Mo, Mn, Al, Cr, W, B, Mg, Ba, Nb and Sr, and the nickel composite hydroxide is For spherical secondary particles formed by agglomeration of primary particles, the standard deviation σ of the length of the primary particles is <145, and the center of the secondary particles is compacted. The present invention also correspondingly provides a preparation method thereof. The nickel composite hydroxide of the present invention has high comprehensive properties of good consistency of primary particles, narrow particle size distribution of secondary particles, good sphericity and compact inner center of secondary particles. The preparation method of the present invention is simple, and the nickel composite hydroxide prepared by controlling the reaction conditions of different processes has excellent comprehensive properties. In addition, the preparation method of the present invention can be operated continuously, and large-scale industrial production can be realized.

Description

technical field [0001] The invention belongs to the field of lithium ion batteries, and in particular relates to a precursor of positive electrode materials and a preparation method thereof. Background technique [0002] In recent years, with the advancement of electronic technology and the popularization of electronic equipment, especially the high functionality of portable electronic equipment such as mobile phones and notebook computers, people have strong expectations for the development of batteries with high energy density, small size and light weight. In addition, with the rapid promotion of electric vehicles, higher requirements are placed on the energy density of power batteries. In order to obtain lithium-ion batteries with higher capacity and lower cost, lithium-ion batteries using lithium-nickel composite oxide as the positive electrode material have emerged as the times require. [0003] Nickel composite hydroxide is the precursor of lithium-nickel composite ox...

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): H01M4/525H01M10/0525
CPCH01M4/525H01M10/0525Y02E60/10
Inventor 彭威陈九华杨志谭欣欣晁锋刚
Owner HUNAN SHANSHAN ENERGY TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com