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Graphene-titanium black composite conductive agent and preparation method thereof

A technology of composite conductive agent and titanium oxide, applied in oxide conductors, carbon-silicon compound conductors, cable/conductor manufacturing and other directions, can solve problems such as unfavorable production and application, many preparation process steps, easy powder agglomeration, etc. Improve dispersion effect and utilization, simple process and easy operation

Active Publication Date: 2017-11-24
NINGBO MORSH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the dispersibility of the composite conductive powder obtained by this method is improved, its conductivity is relatively low, and the powder is still easy to agglomerate in the solvent, and it is not easy to disperse. The preparation process is many and time-consuming, so it is not conducive to large-scale industries. chemical production and application

Method used

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  • Graphene-titanium black composite conductive agent and preparation method thereof

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preparation example Construction

[0023] The invention provides a kind of preparation method of graphene-titanium oxide composite conductive agent, it comprises the following steps:

[0024] S1, mixing the titanium dioxide material, a modifier and water to prepare a modified titanium dioxide slurry, wherein the modifier is a polymer alcohol or a polyol;

[0025] S2, dispersing the graphene material in water to obtain a graphene slurry, then mixing the graphene slurry with the modified titanium dioxide slurry, and obtaining a composite slurry through self-assembly; and

[0026] S3, drying the composite slurry to obtain a graphene-titanium oxide composite conductive agent.

[0027] In step S1, the titanium oxide material is Ti 4 o 7 、Ti 3 o 5 、Ti 5 o 9 One of. The microscopic shape of the titanium oxide material is not limited, and it can be at least one of powder, rod, porcelain flake, and porous. The polyhydric alcohol is at least one of pentaerythritol, ethylene glycol, propylene glycol, butanediol, h...

Embodiment 1

[0041] The graphene water-based slurry with a mass concentration of 2% and the Ti with a mass concentration of 4% were prepared respectively. 4 o 7 Modified water-based slurry:

[0042] a) preparation of graphene material water-based slurry with a mass concentration of 2%: take 40Kg of a graphene water-based slurry with a mass concentration of 5%, dilute with water until the graphene content is 2%, and stir evenly;

[0043] b) Ti with a mass concentration of 4% 4 o 7 Preparation of modified water-based slurry: weigh 2kg Ti 4 o 7 Material, according to Ti 4 o 7 The mass ratio of material to polyethylene glycol is 1:0.05. Weigh polyethylene glycol and add a certain amount of water to dilute to Ti 4 o 7 The mass concentration of the material is 4%, stirring and dispersing evenly;

[0044] The above prepared graphene material aqueous slurry and Ti 4 o 7 The aqueous slurry is mixed evenly to obtain graphene / Ti 4 o 7 Composite slurry, the intermediate slurry is spray-dr...

Embodiment 2

[0047] The aqueous slurry of graphene material with a mass concentration of 0.1% and the Ti with a mass concentration of 5% were prepared respectively. 4 o 7 Material modified water-based slurry:

[0048] a) preparation of graphene material water-based slurry with a mass concentration of 0.1%: take 40Kg of a graphene water-based slurry with a mass concentration of 5%, and dilute with water until the graphene content is 0.1%;

[0049] b) Ti with a mass concentration of 5% 4 o 7 Preparation of material modified water-based slurry: weigh 0.2kg Ti 4 o 7 , according to Ti 4 o 7 The mass ratio to ethylene glycol is 1:1, weigh 0.2kg of ethylene glycol, add a certain amount of water to dilute to Ti 4 o 7 The mass concentration is 5%, stirring and dispersing evenly;

[0050] The above prepared graphene material aqueous slurry and Ti 4 o 7 The aqueous slurry is mixed evenly to obtain graphene / Ti 4 o 7 Composite slurry, the intermediate slurry is spray-dried to obtain graphe...

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Abstract

The invention relates to a graphene-titanium black composite conductive agent. The graphene-titanium black composite conductive agent comprises a graphene material and a modified titanium black material, wherein the modified titanium black material is obtained by modifying titanium black material through polymer alcohol or polyhydric alcohols; the surface of the modified titanium black material is provided with hydroxyl groups; and the graphene material is tightly combined with the modified titanium black material through the hydroxyl groups in the surface of the modified titanium black material. The invention also provides a preparation method of the graphene-titanium black composite conductive agent.

Description

technical field [0001] The invention relates to a graphene material, in particular to a graphene-titanium oxide composite conductive agent and a preparation method thereof. Background technique [0002] graphene is sp 2 Two-dimensional crystal materials with hybrid monoatomic layers have unique electrical, mechanical, and thermal properties. The electron mobility of graphene at room temperature exceeds 15000 cm 2 / V·s, which is higher than that of carbon nanotubes and silicon crystals, and its resistivity is only 10 -6 Ω·m, which is the material with the smallest resistivity known so far. Since the discovery of graphene, people have carried out a series of exploration work in view of its excellent characteristics, such as utilizing graphene’s good light transmission and thermal conductivity, using graphene to make touch screens and optical panels; utilizing graphene’s high electron mobility rate, using graphene as a conductive additive for battery energy storage devices,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/04H01B1/08H01B13/00
CPCH01B1/04H01B1/08H01B13/00
Inventor 秦志鸿刘鹏赵永胜周旭峰刘兆平
Owner NINGBO MORSH TECH
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