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Preparation method of anode slurry of high-energy nickel based secondary battery

A secondary battery and positive electrode slurry technology, which is applied in the direction of electrode manufacturing, alkaline battery electrodes, positive electrodes, etc., can solve the problem of not using the consistency of slurry in each barrel, and achieve the effect of solving agglomeration and improving consistency

Inactive Publication Date: 2015-05-20
徐象华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key control points of ingredients are stirring time and speed, dispersion time and speed, type and dosage of electrode materials; in current industrial production, there is no effective method to control the consistency of each barrel of slurry, so it can be seen that the currently used Conventional batching methods need further improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A nickel-based high-energy secondary battery positive electrode slurry, the composition of raw materials and their weight ratio are as follows: 0.05 parts of binder, 0.5 parts of cobaltous oxide, 0.15 parts of polytetrafluoroethylene emulsion, and 100 parts of nickelous hydroxide. Wherein, the binder is an aqueous solution of HPMC powder, and its mass percentage is 3%.

[0018] The method for making the positive electrode slurry of the nickel-based high-energy secondary battery, based on making one ton of the slurry, comprises the following steps:

[0019] a) Prepare the adhesive: weigh the HPMC powder and distilled water in a weight ratio of 3:100 for later use, heat the distilled water to 65°C, then pour hot water into the mixer, and wait until the water temperature drops to 45°C Add HPMC powder, stir for 2 hours at a frequency of 700 cycles per minute, and set aside for more than 8 hours for later use;

[0020] b) Pour the adhesive into the agitator, start the agita...

Embodiment 2

[0027] A nickel-based high-energy secondary battery positive electrode slurry, the raw material composition and their weight ratio are: 0.1 part of binder, 0.35 part of cobaltous oxide, 0.15 part of polytetrafluoroethylene emulsion, and 100 parts of nickelous hydroxide. Wherein, the binder is an aqueous solution of HPMC powder, and its mass percentage is 1.5%.

[0028] The method for making the positive electrode slurry of the nickel-based high-energy secondary battery, based on making one ton of the slurry, comprises the following steps:

[0029] a) Prepare the adhesive: weigh the HPMC powder and distilled water at a weight ratio of 1.5:100 for later use, heat the distilled water to 60°C, then pour hot water into the mixer, and wait until the water temperature drops to 47°C Add HPMC powder, stir for 2 hours at a frequency of 650 cycles per minute, and set aside for more than 8 hours for later use;

[0030] b) Pour the adhesive into the agitator, start the agitator to stir at...

Embodiment 3

[0037] A nickel-based high-energy secondary battery positive electrode slurry. The composition of raw materials and their weight ratio are as follows: 0.08 parts of binder, 0.25 parts of cobaltous oxide, 0.15 parts of polytetrafluoroethylene emulsion, and 100 parts of nickelous hydroxide. Wherein, the binder is an aqueous solution of HPMC powder, and its mass percentage is 2%.

[0038] The method for making the positive electrode slurry of the nickel-based high-energy secondary battery, based on making one ton of the slurry, comprises the following steps:

[0039] a) Prepare the adhesive: weigh the HPMC powder and distilled water in a weight ratio of 2:100 for later use, heat the distilled water to 70°C, then pour hot water into the mixer, and wait until the water temperature drops to 50°C Add HPMC powder, stir for 2 hours at a frequency of 750 cycles per minute, and set aside for more than 8 hours for later use;

[0040] b) Pour the adhesive into the agitator, start the agit...

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Abstract

The invention relates to a preparation method of anode slurry of a high-energy nickel based secondary battery. According to the preparation method of the anode slurry, nickel hydroxide, polytetrafluoroethylene emulsion and other raw materials are added in a step-by-step manner, the materials can be stirred and dispersed in binders favorably, the caking phenomenon can be effectively overcome and the consistence of the slurry in each batch is improved.

Description

technical field [0001] The invention relates to the technical field of nickel-based secondary batteries, in particular to a method for making positive electrode slurry for high-energy nickel-based secondary batteries. Background technique [0002] With the development of electric vehicles and energy storage fields, higher requirements are put forward for the performance of chemical power sources. Nickel-based high-energy secondary batteries are favored by the market because of their advantages such as high energy density, high output power, long service life and environmental protection. High attention, its market share is constantly increasing, and it has broad development prospects. [0003] In the battery production process, ingredients are one of the key steps. The batching process is to mix the various components in the slurry together according to a certain proportion, and after the slurry is prepared, it is evenly coated on the current collector, so as to ensure the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/26H01M4/04
CPCH01M4/26H01M2004/028Y02E60/10
Inventor 徐象华吴国市孙跃进
Owner 徐象华
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