New rare earth power supply negative electrode slurry and slurry process

A power supply negative electrode and rare earth technology, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve problems such as the inability to achieve uniform mixing of large-capacity slurry, achieve controllable production time, reliable quality, and reduce batches and work shifts Effect

Active Publication Date: 2022-02-15
包头昊明稀土新电源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the prior art cannot achieve uniform mixing of large-capacity slurry, the purpose of the present invention is to provide a new rare earth power supply negative electrode slurry and slurry process, which can realize a stirring The kettle can mix 400L ~ 600L of slurry at a time, and the slurry is uniform, and the production time is controllable, which can reduce the batches and work shifts of the slurry. The slurry has stable performance and good reproducibility, which meets the high-quality slurry for water-based batteries. To achieve the effect of improving the rate discharge performance and reducing the AC internal resistance of the battery

Method used

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  • New rare earth power supply negative electrode slurry and slurry process
  • New rare earth power supply negative electrode slurry and slurry process

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A rare earth new power supply negative slurry and pulp process, including the following steps:

[0037] (1) Configuring raw materials, each composition in the slurry is included in mass: active substance: high-stricken rare earth hydrogen storage alloys, conductive agent: nickel / carbon composite material, dispersant: 60% PTFE emulsion 1% , Binder: HPMC2.5%, margin is deionized water, weighing raw materials in proportion.

[0038] (2) The binder HPMC with deionized water (95% deionized water having a total weight of ion water) is mixed in a vacuum stirrer, and then the conductive agent nickel / carbon composite material is added. Using normal pressure at normal pressure, high-speed stirring is uniform, then add the dispersant, and the low speed is mixed in normal pressure at normal pressure, and the mixing is mixed, and the glue is obtained; in a static negative pressure vacuum Lower (vacuum reaching 15% lower than the outer standard air pressure).

[0039] (3) After the s...

Embodiment 2

[0046] A rare earth new power supply negative slurry and pulp process, including the following steps:

[0047] (1) Configuring raw materials, each composition in the slurry is included in mass: active substance: high-defensive rare earth hydrogen storage alloy, conductive agent: nickel / carbon composite material, dispersant: 60% PTFE emulsion 1.5% , Adhesive: CMC4%, margin is deionized water, weighing raw materials in proportion.

[0048] (2) The binder CMC with deionized water (90% of the total weight of the total weight of ion water) is mixed in a vacuum stirrer, and then the conductive agent nickel / carbon composite is added. High-speed stirring dispersion is uniform at normal pressure, and then add a dispersant, and the low speed is mixed in the normal pressure of 25 m / s under normal pressure to obtain a glue; in a static negative pressure vacuum The lower (vacuum is reached to 10% less than 10% of the outer standard air pressure).

[0049] (3) After the step (2), three ad...

Embodiment 3

[0056] A rare earth new power supply negative slurry and pulp process, including the following steps:

[0057] (1) Configuring raw materials, each composition in the slurry is included in mass: active substance: high-defensive rare earth hydrogen storage alloy 62.5%, conductive agent: nickel / carbon composite material, dispersant: 60% PTFE emulsion 1.25% , Binder: HPMC 3%, margin is deionized water, weighing raw materials in proportion.

[0058] (2) The binder HPMC with deionized water (92% of the total weight of the total weight of ion water) is mixed in a vacuum stirrer, then add a conductive agent nickel / carbon composite material. At normal pressure, high-speed stirring dispersion is uniform with a line speed of 35 m / s, and then add the dispersant. Under normal pressure, the low speed is mixed in the normal pressure, and the glue is obtained; in a static negative pressure vacuum The lower (vacuum reached 20% less than 20% of the outer standard air pressure).

[0059] (3) A...

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Abstract

The invention belongs to the technical field of storage battery production and manufacturing, and particularly relates to new rare earth power supply negative electrode slurry and a slurry process. The process includes uniformly mixing a binder and deionized water in a stirring kettle, adding a conductive agent, uniformly stirring, adding a dispersant, and uniformly stirring to obtain glue; adding the active substances while being stirred in three times, where the active substances are added in a negative-pressure vacuum feeding mode, male shaft stirring is adopted when the active substances are added for the first time, double-shaft stirring of revolution and autorotation at the same time is adopted when the active substances are added for the second time, and double-shaft stirring of revolution and autorotation simultaneously is continuously adopted when the active substances are added for the third time, and where the active substance is a high-abundance rare earth hydrogen storage alloy; and washing the top in the stirring kettle with deionized water, scraping the slurry, and uniformly stirring to complete the preparation of the slurry. According to the invention, 300-600L of slurry can be mixed once in one kettle, the uniformity of the slurry is stable, the reproducibility is good, and the effects of improving the rate discharge performance and reducing the alternating-current internal resistance of the battery are achieved.

Description

Technical field [0001] The present invention belongs to the field of battery production and manufacturing, and more particularly to a rare earth new power supply negative slurry and a pulp process. Background technique [0002] The rare earth new power supply has a high safety, long life, ambient temperature range (-55 ° C ~ 60 ° C), etc. is a secondary battery that can be recycled. However, the negative electrode active substance of high-performance rare earth power supply is a high-defensive rare earth hydrogen storage alloy, and the particles are irregular. Its slurry is difficult to stir well, and the material of the inner wall of the suction top portion will not be cleaned in time, which will affect the subsequent slurry Quality, which greatly restricts the planning of large-scale production and production shifts of rare earth new power supplies. [0003] And the slurry dry method and wet method, dry method mix well in proportion, then sprayed on a concentrated fluid coated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1395H01M4/134H01M4/38
CPCH01M4/1395H01M4/134H01M4/383Y02E60/10
Inventor 蒋志军赵恒刘维刚李帅陈淑芳陈平封世群李雯赵宝忠朱慧明
Owner 包头昊明稀土新电源科技有限公司
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