Battery positive electrode slurry comprising composite carbon nano-tubes

A technology of carbon nanotubes and battery positive electrodes, which is applied in battery electrodes, nanotechnology, nanotechnology, etc., and can solve the problem of no specific specification ratio

Active Publication Date: 2018-10-23
SOLIDEDGE SOLUTION INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the prior art, polymer materials and dispersants are added to the slurry with short carbon nanotubes, but there is no specific standard ratio

Method used

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  • Battery positive electrode slurry comprising composite carbon nano-tubes
  • Battery positive electrode slurry comprising composite carbon nano-tubes
  • Battery positive electrode slurry comprising composite carbon nano-tubes

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Embodiment Construction

[0032] The features and advantages of the present invention can be further understood from the following description, please refer to the accompanying drawings when reading.

[0033] With regard to the structure and composition of the present invention, as well as the functions and advantages that can be produced, a preferred embodiment of the present invention will be described in detail as follows in conjunction with the accompanying drawings.

[0034] Please refer to Figure 1 to Figure 6 Shown is the positive electrode slurry for batteries comprising composite carbon nanotubes of the present invention, including the following components:

[0035] Medium-sized carbon nanotubes 11, the proportion of which accounts for the entire slurry is between 0% and 5% by weight; wherein the length of the medium-sized carbon nanotubes is between 5 μm and 15 μm, and the diameter is between 12nm and 20nm . Preferably, its purity is greater than 99%;

[0036] Long carbon nanotubes 10, th...

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Abstract

The invention relates to a battery positive electrode slurry comprising composite carbon nano-tubes. The battery positive electrode slurry comprises: carbon nano-tubes having different lengths and different pipe diameters, wherein the carbon nano-tubes comprise medium carbon nano-tubes accounting for 0-5 wt% of the whole slurry, long carbon nano-tubes accounting for about 0.1-1 wt% of the whole slurry, and short carbon nano-tubes accounting for 0-5 wt% of the whole slurry; graphene for bridging the medium, the short carbon nano-tubes and the long carbon nano-tubes, wherein the graphene has 2-4layers, and accounts for 1-1.2 wt% of the whole slurry; a polymer material for stabilizing the medium carbon nano-tubes, the short carbon nano-tubes and the long carbon nano-tubes, wherein the polymer material can adjust the viscosity of the slurry, and accounts for 1-1.2 wt% of the whole slurry; and a dispersant for filling the gap between the polymer material and the composite carbon noano-tubes, wherein the surface coating degree of the carbon nano-tubes is increased so as to reduce the phenomenon of agglomeration.

Description

technical field [0001] The invention relates to a conductive slurry of positive electrode material of a battery, in particular to a positive electrode slurry of a battery comprising composite carbon nanotubes. Background technique [0002] The battery is mainly formed by placing the positive electrode and the negative electrode in the electrolyte solution. Wherein the positive electrode is to mix and disperse a large number of positive electrode conductive units (positive electrode material, such as lithium cobalt oxide) in the slurry. Generally speaking, the positive conductive unit must be mixed with the conductive paste before it can be applied to the electrode sheet and assembled into a battery. Therefore numerous positive electrode conductive units (positive electrode materials) are connected to each other by conductive paste, so the conductive paste must have conduction aid or conductivity, so that free electrons can migrate in different positive electrode conductive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/62H01M10/0525B82Y30/00
CPCB82Y30/00H01M4/364H01M4/625H01M10/0525Y02E60/10
Inventor 赖鸿政李依霖曹邵喧林正崧张曾隆
Owner SOLIDEDGE SOLUTION INC
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