A production method of lithium ion battery slurry

A lithium-ion battery and production method technology, applied in battery electrodes, circuits, electrode manufacturing, etc., can solve the problems of material surface structure and morphology damage, lithium-ion battery performance limitations, poor slurry performance, etc., to achieve improved wetting Effect and efficiency, improvement of surface performance, effect of capacity improvement

Inactive Publication Date: 2018-12-11
广东海中新能源设备股份有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

In the prior art, when these complex materials are used in the preparation of slurry, the surface structure and morphology of the material itself will be destroyed, and due to the poor compatibility between materials of different properties, the prepared The performance of the paste is not good, which ultimately leads to the performance of the lithium-ion battery being greatly limited

Method used

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Embodiment Construction

[0021] In order to further understand the features, technical means and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with specific embodiments.

[0022] The embodiment of the present invention discloses a production method of lithium ion battery slurry, comprising the following steps:

[0023] A. According to the formula ratio, the active substance and the first solvent are fully wetted in advance by far-infrared field, quantum magnetic field and vibration field to obtain the active substance wetting liquid, which can effectively change the surface tension of the material, so that the active substance and solvent can be used in different places. Fully dissolve and wet under the condition of destroying the surface structure and morphology. During the wetting process, the temperature is kept at 45-100°C. Through appropriate temperature, the molecular activity can be improved, th...

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Abstract

The invention provides a production method of lithium ion battery slurry, comprising the following steps: the active material and the first solvent are fully wetted by far infrared field, quantum magnetic field and vibration field in advance to obtain an active material wetting liquid; A conductive adhesive wetting liquid is obtained by wetting the conductive agent, the adhesive and the second solvent in advance through a far infrared field, a quantum magnetic field and a vibration field according to the formula proportion; The active material wetting liquid and the conductive adhesive wettingliquid are mixed, and then dispersed and mixed by a tumbling wave device and a jet device to obtain a dispersed mixed liquid; Heating the dispersion mixture and carrying out coating reaction througha vibrating impact device to obtain an original slurry of the battery; A battery original slurry is added to a centrifuge to obtain a battery slurry. The invention carries out special pre-wetting on different materials, can avoid the surface structure of the material itself to be destroyed, carries out surface modification treatment on the mixed slurry, and can improve the performance of the slurry.

Description

technical field [0001] The invention relates to a lithium-ion battery manufacturing method, and specifically discloses a production method of a lithium-ion battery slurry. Background technique [0002] Lithium-based batteries are divided into lithium batteries and lithium-ion batteries. Lithium-ion batteries are used in mobile phones and notebook computers, commonly known as lithium batteries, which were first successfully developed in 1990 by Sony Corporation of Japan. Lithium-ion battery is a secondary battery (rechargeable battery), which mainly relies on lithium ions to move between the positive and negative electrodes to work. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: when charging, Li+ is deintercalated from the positive electrode, intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M4/139
CPCH01M4/04H01M4/139Y02E60/10
Inventor 邓明能黄春章唐银
Owner 广东海中新能源设备股份有限公司
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