Check patentability & draft patents in minutes with Patsnap Eureka AI!

Battery slurry dispersant as well as preparation method and application thereof

A technology of dispersant and slurry, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of difficult control of components, complicated materials, and many steps of dispersant, so as to achieve less usage, increase productivity, and reduce production costs Effect

Inactive Publication Date: 2014-01-29
HEBEI JIESHEN NEW ENERGY TECH
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing preparation methods of dispersants have many steps, complicated materials, and difficult to control the components, so it is of great significance to study dispersants for lithium-ion batteries

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
  • Battery slurry dispersant as well as preparation method and application thereof
  • Battery slurry dispersant as well as preparation method and application thereof
  • Battery slurry dispersant as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment is the preparation process of dispersant, and its preparation process comprises batching, reaction and product pH adjustment:

[0048] (1) Ingredients

[0049] Each raw material and its mass parts are:

[0050] a) Acrylic acid 100 parts

[0051] b) 50 parts of maleic anhydride

[0052] c) 20 parts of 2-methyl-2-acrylate-2-hydroxyethyl phosphate

[0053] d) Polyoxyethylene allyl ester macromonomer 20 parts

[0054] e) Hydrogen peroxide-lithium sulfite redox initiation system:

[0055] Among them, 0.5 parts of hydrogen peroxide solution with a mass concentration of 18%

[0056] 0.5 parts of lithium sulfite aqueous solution with a mass concentration of 36%

[0057] The above four raw materials of a), b), c) and d) are respectively prepared with deionized water into aqueous solutions with a mass concentration of 60%;

[0058] (2) Reaction

[0059] Using a multi-port reactor connected with a reflux device, each container containing the above-mentioned...

Embodiment 2

[0063] The difference between the preparation process of the present embodiment dispersant and embodiment 1 is:

[0064] 1) Raw materials and mass parts:

[0065]a) Acrylic acid 100 parts

[0066] b) 80 parts of maleic anhydride

[0067] c) 2-methyl-2-acrylate-2-hydroxyethyl phosphate 30 parts

[0068] d) Polyoxyethylene allyl ester macromonomer 30 parts

[0069] e) Hydrogen peroxide-lithium sulfite redox initiation system:

[0070] Among them, 1.5 parts of hydrogen peroxide solution with a mass concentration of 20%

[0071] 1.5 parts of lithium sulfite aqueous solution with a mass concentration of 40%

[0072] 2) The reaction process of dispersant preparation:

[0073] The time for adding the raw materials is 45 minutes, and the temperature in the reactor during the dropping process is between 65°C. After the dropwise addition is completed, the reaction is kept at 65°C for 2.2 hours; after the reaction, adjust the pH of the solution with a 65% lithium hydroxide aqueous ...

Embodiment 3

[0075] The difference between the preparation process of the present embodiment dispersant and embodiment 1 is:

[0076] 1) Raw materials and mass parts:

[0077] a) Acrylic acid 100 parts

[0078] b) Maleic anhydride 100 parts

[0079] c) 40 parts of 2-methyl-2-acrylate-2-hydroxyethyl phosphate

[0080] d) Polyoxyethylene allyl ester macromonomer 40 parts

[0081] e) Hydrogen peroxide-lithium sulfite redox initiation system:

[0082] Among them, 2.0 parts of hydrogen peroxide solution with a mass concentration of 30%

[0083] 2.0 parts of lithium sulfite aqueous solution with a mass concentration of 70%

[0084] 2) The reaction process of dispersant preparation:

[0085] The dripping time of the raw materials is 55min, and the temperature in the reactor during the dropping process is between 70°C. 6.7 Obtain a yellow aqueous lithium-ion battery slurry dispersant solution with a concentration of 30%;

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
Viscosityaaaaaaaaaa
Viscosityaaaaaaaaaa
Viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a battery slurry dispersant as well as a preparation method and application thereof and belongs to the technical field of battery preparation. The battery slurry dispersant comprises the following raw materials in parts by mass: 100 parts of acrylic acid, 50-100 parts of maleic anhydride, 20-40 parts of 2-methyl-2-acrylic acid-2-hydroxyethyl phosphate, 20-40 parts of polyoxyethylene allyl macromonomer and 1-4 parts of hydrogen peroxide-lithium sulfite redox initiation system. The preparation method comprises the steps of simultaneously dropwise adding the raw materials into a reaction vessel in the reaction process, holding the temperature and reacting for 2-2.5 hours at the temperature of 55-75 DEG C and regulating the pH (potential of Hydrogen) value of a dispersant solution to 6.5-7.5. The dispersant is used for preparing slurry of lithium ion batteries and is beneficial to increasing the dispersity of water-based battery slurry constituents; and the prepared slurry is high in solid content, low in viscosity, low in heat energy consumption in the water drying process and good in electrical conductivity, so that a guarantee is provided for manufacturing high-quality lithium ion batteries.

Description

technical field [0001] The invention relates to the technical field of battery preparation. Background technique [0002] Due to the advantages of high energy density, high operating voltage, wide application temperature range, and long cycle life, lithium-ion batteries are widely used as power sources for various mobile devices, even in aviation, aerospace, navigation, automobiles, medical equipment and other fields. Gradually replace other traditional batteries, especially its high energy density has made an important contribution to the miniaturization of mobile devices. [0003] At present, there are still some problems in the production process of lithium-ion batteries. Organic solvents, such as N-methylpyrrolidone (NMP), are often used in the production of lithium-ion batteries. This substance is expensive, pollutes the ambient air to a certain extent, and is prone to combustion and explosion under overshoot conditions, with poor safety performance. In the process of...

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): H01M4/62C08F283/06C08F220/06C08F222/06C08F230/02C08F4/40
CPCC08F283/065H01M4/62C08F220/06C08F222/06Y02E60/10
Inventor 任云胡俊平王建森李书华杜立军张志刚
Owner HEBEI JIESHEN NEW ENERGY TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com