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Preparation method of nickel-hydrogen high-power secondary battery cathode slurry

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

Inactive Publication Date: 2019-05-21
浙江霖润新能源科技有限公司
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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

[0019] A nickel-hydrogen high-power secondary battery positive electrode slurry, the raw material composition and their weight ratio are: 10 parts of binder, 5 parts of cobaltous oxide, 1 part of 60% PTFE polytetrafluoroethylene emulsion, 2 parts of nickelous hydroxide parts, 0.75 parts of positive electrode additives, and 70 parts of spherical nickel. Wherein, the binder is an aqueous solution of CMC powder, and its mass percentage is 3%.

[0020] The method for making the positive electrode slurry of the nickel-hydrogen high-power secondary battery is based on the production of one ton of the slurry, comprising the following steps:

[0021] a. Prepare the adhesive: weigh and configure the CMC powder and distilled water according to the weight ratio of 3:100, and put it on hold for more than 8 hours for later use;

[0022] b. Pour the adhesive into the agitator and start the agitator to stir for 15 minutes;

[0023] c. adding the positive electrode additive to the stirrer a...

Embodiment 2

[0032] A nickel-hydrogen high-power secondary battery positive electrode slurry, the raw material composition and their weight ratio are: 20 parts of binder, 3 parts of cobaltous oxide, 0.75 parts of 60% PTFE polytetrafluoroethylene emulsion, 4 parts of nickelous hydroxide part, 0.5 part of positive electrode additive, and 80 parts of spherical nickel. Wherein, the binder is an aqueous solution of CMC powder, and its mass percentage is 2%.

[0033] The method for making the positive electrode slurry of the nickel-hydrogen high-power secondary battery is based on the production of one ton of the slurry, comprising the following steps:

[0034] a. Prepare the adhesive: weigh and configure the CMC powder and distilled water according to the weight ratio of 2:100, and put it on hold for more than 8 hours for later use;

[0035] b. Pour the adhesive into the agitator and start the agitator to stir for 15 minutes;

[0036] c. adding the positive electrode additive to the stirrer a...

Embodiment 3

[0044] A nickel-hydrogen high-power secondary battery positive electrode slurry, the raw material composition and their weight ratio are: 30 parts of binder, 6 parts of cobaltous oxide, 0.5 part of 60% PTFE polytetrafluoroethylene emulsion, 5 parts of nickelous hydroxide 1 part, 1 part of positive electrode additive, 60 parts of spherical nickel. Wherein, the binder is an aqueous solution of CMC powder, and its mass percentage is 1.5%.

[0045] The method for making the positive electrode slurry of the nickel-hydrogen high-power secondary battery is based on the production of one ton of the slurry, comprising the following steps:

[0046] a. Prepare the adhesive: weigh and configure the CMC powder and distilled water according to the weight ratio of 1.5:100, and put it on hold for more than 8 hours for later use;

[0047] b. Pour the adhesive into the agitator and start the agitator to stir for 15 minutes;

[0048] c. adding the positive electrode additive to the stirrer and...

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Abstract

The invention relates to a preparation method of nickel-hydrogen high-power secondary battery cathode slurry. In the preparation method of the cathode slurry, spherical nickel, 60% PTFE emulsion and other raw materials are added by steps, so that the materials can be well stirred and dispersed in a binder, the caking phenomena that equipment cannot solve is overcome effectively, and slurry of eachbatch is more consistent.

Description

technical field [0001] The invention relates to the technical field of nickel-based secondary batteries, in particular to a method for preparing anode slurry for nickel-hydrogen high-power 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. Ni-MH high-power secondary batteries are favored because of their advantages such as high energy density, high output power, long service life and environmental protection. Highly concerned by the market, 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 consistency of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/24H01M4/38H01M4/62
CPCY02E60/10
Inventor 徐象华
Owner 浙江霖润新能源科技有限公司
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