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
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  • 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 t

Method used

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  • 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

Example Embodiment

[0046] Example 1

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

[0048] (1) Ingredients

[0049] The raw materials and their mass parts are:

[0050] a) 100 parts of acrylic

[0051] b) 50 parts of maleic anhydride

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

[0053] d) 20 parts of polyoxyethylene allyl ester macromonomer

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

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

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

[0057] The above-mentioned a), b), c) and d) four kinds of raw materials are separately prepared with deionized water to form an aqueous solution with a mass concentration of 60%;

[0058] (2) Reaction

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

Example Embodiment

[0062] Example 2

[0063] The preparation process of the dispersant in this example is different from that in Example 1:

[0064] 1) Raw materials and mass parts:

[0065] a) 100 parts of acrylic

[0066] b) 80 parts of maleic anhydride

[0067] c) 30 parts of 2-methyl-2-acrylic acid-2-hydroxyethyl ester phosphate

[0068] d) 30 parts of polyoxyethylene allyl ester macromonomer

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

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

[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 dropping time of the raw materials is 45min. The temperature in the reactor during the dropping process is between 65°C. After the dropping is completed, the reaction is kept at 65°C for 2.2h; after the reaction, the pH of the solution is adjusted with a 65% lithium hydroxide aqueous solution. The value...

Example Embodiment

[0074] Example 3

[0075] The preparation process of the dispersant in this example is different from that in Example 1 in:

[0076] 1) Raw materials and mass parts:

[0077] a) 100 parts of acrylic

[0078] b) 100 parts of maleic anhydride

[0079] c) 40 parts of 2-methyl-2-acrylic acid-2-hydroxyethyl ester phosphate

[0080] d) 40 parts of polyoxyethylene allyl ester macromonomer

[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 70% mass concentration

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

[0085] The dropping time of the raw materials is 55min. The temperature in the reactor during the dropping process is between 70°C. After the dropping is completed, the reaction is kept at 70°C for 2h; after the reaction, the pH value of the solution is adjusted to a concentration of 70% lithium carbonate aqueo...

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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

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Application Information

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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
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