Conductive agent dispersion liquid, electrode slurry, electrode, battery, and preparation methods thereof

A technology of electrode slurry and conductive agent, applied in battery electrodes, electrode manufacturing, conductive materials dispersed in non-conductive inorganic materials, etc., can solve problems such as uneven dispersion of conductive agents
CN101752548BInactive Publication Date: 2012-09-26BYD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BYD CO LTD
Publication Date
2012-09-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a conductive agent dispersion liquid and a preparation method thereof. The conductive agent dispersion liquid contains a conductive agent, a solvent and a dispersion agent, wherein the dispersion agent contains aromatic rings and can be bound with the surface of the conductive agent by Van der Waals force among molecules and pi-pi action force between planes; and the solubility in the first solvent at the temperature of 25 DEG C is not smaller than 10wt%. The invention also discloses an electrode slurry and a preparation method thereof, and a battery electrode preparedfrom the electrode slurry and a battery. As using the matter which contains the aromatic rings and can be bound with the surface of the conductive agent by Van der Waals force among molecules and pi-pi action force between planes as the dispersion agent of the conductive agent, the battery capacitance, the charging and discharging capacitance and the rate discharge property are effectively enhanced.
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Description

technical field

[0001] The present invention relates to a kind of conductive agent dispersion liquid and the preparation method of the conductive agent dispersion liquid, and the present invention also relates to the electrode slurry containing the above-mentioned conductive agent dispersion liquid and its preparation method and the battery electrode and the battery electrode made by using the electrode slurry The battery electrodes of the battery. Background technique

[0002] Lithium-ion batteries have been widely used in portable communications such as mobile phones and notebook computers due to their advantages such as high specific energy, high working voltage, light weight, small self-discharge, long cycle life, stable discharge performance, no memory effect, and low environmental pollution. and electronic products.

[0003] Lithium nickel cobalt oxide (LiNiCoO 2 ), lithium cobalt oxide (LiCoO 2 ), lithium manganese oxide (LiMn 2 o 4 ) and lithium iron phosphorus ...

Claims

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