A kind of conductive paste compounded by carbon nanotube, graphene and conductive carbon black and preparation method thereof
A technology of conductive carbon black and carbon nanotubes, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as affecting the conductivity of lithium-ion batteries, limited reports of carbon nanotube dispersion, and unsatisfactory conductivity, and achieve production efficiency. High, uniform and stable properties, good electrical conductivity
Active Publication Date: 2020-08-04
QINGDAO HAOXIN NEW ENERGY TECH CO LTD
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Problems solved by technology
[0002] In the prior art, when carbon nanotubes are used in lithium-ion batteries, since the carbon nanotubes are fibrous, the positive electrode material of the lithium-ion battery is granular, and there is only point contact between the carbon nanotubes and the positive electrode material, which affects the lithium ion battery. The electrical conductivity of the battery
[0003] Furthermore, carbon nanotubes are compounded with traditional conductive agents, such as carbon black, acetylene black, conductive graphite, etc. Although conductive paste can be made, the stability of the paste is poor, and the conductive performance is not ideal
[0004] Currently, there are limited scattered reports on carbon nanotubes, graphene, and conductive carbon blacks
Method used
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Embodiment 1～6
[0040] (1) Take the raw materials corresponding to each embodiment and comparative example according to the proportioning shown in Table 1.
[0041] (2) In a dehumidified environment at normal temperature (i.e. temperature 10-30°C, humidity lower than 30% R.Hs), slowly pour the solvent and dispersant into the stirring tank in turn, and continue stirring until the dispersant is completely dissolved, and obtain solution.
[0042] (3) Graphene is first added in the solution gained in step (2) and stirred, and after premixing, high-speed dispersion equipment is used to disperse, and the dispersion linear velocity is 12m / s, and the dispersion time is as shown in Table 1, and obtains the graphene dispersion;
[0043] (4) In step (3) gained graphene dispersion liquid, add carbon nanotube, after premixing evenly, use high-speed dispersing equipment to disperse, dispersion linear velocity is 15m / s, and dispersion time is as shown in table 1, obtains graphite olefin, carbon nanotube co...
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Abstract
Disclosed in the present invention are electrocondution slurry and a preparation method therefor. The electrocondution slurry comprises: 1-1.5 parts by weight of carbon nanotubes; 1.5-3 parts by weight of graphene, 1-2 parts by weight of conductive carbon black; 1-1.25 parts by weight of a dispersing agent; and 80-90 parts by weight of a solvent. The electrocondution slurry and the preparation method provided by the present invention are simple, low in costs, high in stability, and good in conductivity.
Description
technical field [0001] The invention relates to the technical field of conductive materials, in particular to a conductive paste compounded with carbon nanotubes, graphene and conductive carbon black and a preparation method thereof. Background technique [0002] In the prior art, when carbon nanotubes are used in lithium-ion batteries, since the carbon nanotubes are fibrous, the positive electrode material of the lithium-ion battery is granular, and there is only point contact between the carbon nanotubes and the positive electrode material, which affects the lithium ion battery. The electrical conductivity of the battery. [0003] Furthermore, carbon nanotubes are compounded with traditional conductive agents, such as carbon black, acetylene black, conductive graphite, etc. Although conductive paste can be made, the stability of the paste is poor, and the conductive performance is not ideal. [0004] Currently, there are limited scattered reports on carbon nanotubes, grap...
Claims
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IPC IPC(8): H01M4/36H01M4/583H01M4/62H01M10/0525
CPCH01M4/364H01M4/583H01M4/625H01M10/0525Y02E60/10
Inventor 王昆明董安钢张晓鸿耿超杨兴振于大周
Owner QINGDAO HAOXIN NEW ENERGY TECH CO LTD