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

Ni-Co-Al-Mg composite hydroxide, preparation method and application thereof

A composite hydroxide, nickel-cobalt-aluminum-magnesium technology, applied in nickel oxide/nickel hydroxide, electrochemical generators, electrical components, etc., can solve problems affecting the consistency of positive electrode materials and uneven distribution of doping elements. Achieve the effects of improved consistency, simple process, and reduced potential energy

Inactive Publication Date: 2017-04-19
JINGMEN GEM NEW MATERIAL
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of solid-phase mixed doping usually leads to uneven distribution of doping elements in

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
  • Ni-Co-Al-Mg composite hydroxide, preparation method and application thereof
  • Ni-Co-Al-Mg composite hydroxide, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] Please refer to figure 1 , figure 1 It is a flow chart of the preparation method of nickel-cobalt-aluminum-magnesium composite oxide in an implementation of the present invention, comprising the following steps:

[0043] S101, according to the molar concentration ratio of nickel, cobalt, aluminum, and magnesium metal ions, n(Ni 2+ ): n(Co 2+ ): n(Al 3+ ): n (Mg 2 + )=x: y: z: w nickel salt, cobalt salt, aluminum salt, magnesium salt are formulated into the mixed salt solution of nickel cobalt aluminum magnesium;

[0044] S102. Add a precipitation complexing agent to the mixed salt solution, stir to form a mixed solution, transfer the mixed solution to a hydrothermal reaction kettle, and react at 100-180°C for 12-48 hours; wherein, the precipitation The complexing agent is one or more of urea, acetamide, acrylamide, ammonium carbonate and ammonium bicarbonate;

[0045] S103. After the reaction is completed, filter the material obtained after the reaction to obtain...

Embodiment 1

[0049] A preparation method of nickel-cobalt-aluminum-magnesium composite oxide, comprising the following steps:

[0050] According to the molar concentration ratio of nickel, cobalt, aluminum, and magnesium metal ions, n(Ni 2+ ): n(Co 2+ ): n(Al 3+ ): n (Mg 2+ )=0.7:0.2:0.05:0.05, nickel salt, cobalt salt, aluminum salt, magnesium salt are formulated into a certain concentration of nickel-cobalt-aluminum-magnesium mixed salt solution, the total molar concentration of metal ions in the mixed salt solution is 1mol / L;

[0051] Prepare 40mL, 10mol / L urea solution, stir it with 40mL of the above-mentioned mixed salt solution to form a uniform mixed solution, transfer the mixed solution to a polytetrafluoroethylene reactor, and react at 120°C for 24 hours;

[0052] After the reaction is finished, take out the reaction kettle, and after it is cooled to room temperature, filter and wash the material obtained after the reaction, and wash until the pH of the filtrate is neutral; o...

Embodiment 2

[0060] A preparation method of nickel-cobalt-aluminum-magnesium composite oxide, comprising the following steps:

[0061] According to the molar concentration ratio of nickel, cobalt, aluminum, and magnesium metal ions, n(Ni 2+ ): n(Co 2+ ): n(Al 3+ ): n (Mg 2+ )=0.75:0.15:0.05:0.05, nickel salt, cobalt salt, aluminum salt, magnesium salt are formulated into a certain concentration of nickel-cobalt-aluminum-magnesium mixed salt solution, and the total molar concentration of metal ions in the mixed salt solution is 1.5mol / L;

[0062] Prepare 80mL, 15mol / L urea solution, stir it with 80mL of the above-mentioned mixed salt solution to form a uniform mixed solution, transfer the mixed solution to a polytetrafluoroethylene reactor, and react at 150°C for 36 hours;

[0063] After the reaction is finished, take out the reaction kettle, and after it is cooled to room temperature, filter and wash the material obtained after the reaction, and wash until the pH of the filtrate is ne...

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
The average particle sizeaaaaaaaaaa
Tap densityaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a Ni-Co-Al-Mg composite hydroxide, wherein the method includes the steps of: performing a reaction to a raw material being a mixed salt solution of nickel, cobalt, aluminum and magnesium with urea as a precipitation and complexation agent in a hydrothermal reaction kettle at 100-180 DEG C for 12-48 h to prepare Ni-Co-Al-Mg composite hydroxide; and washing and drying the Ni-Co-Al-Mg composite hydroxide. By means of the method, aluminum ions can be uniformly co-precipitated with nickel, cobalt and magnesium ions within the same pH range, thus producing the a Ni-Co-Al-Mg precursor having stable ingredient and distribution and used for a lithium ion battery.

Description

technical field [0001] The invention belongs to the technical field of battery material preparation, and in particular relates to a nickel-cobalt-aluminum-magnesium composite hydroxide and a preparation method and application thereof. Background technique [0002] Lithium-ion power batteries have attracted great attention due to their good characteristics such as high specific energy, high safety, and renewability. In particular, the global development and popularization of the automobile industry provides broad prospects for the development of electric vehicles, which will bring great demand for the positive electrode materials and precursors for power lithium-ion batteries used in them. Vehicle power battery materials should be as consistent as possible (such as small differences in elemental composition, particle size distribution, tap density, etc. of different batches of products). Minor differences in power battery materials will lead to differences in their performanc...

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
IPC IPC(8): H01M4/52H01M4/48H01M10/0525C01G53/04
CPCC01G53/04C01P2004/03C01P2004/32C01P2004/61H01M4/48H01M4/52H01M10/0525Y02E60/10
Inventor 许开华李军秀张云河
Owner JINGMEN GEM NEW MATERIAL
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