Preparation method of nano graphene copper foil

A nano-graphene, graphene technology, applied in nanotechnology, electrode carrier/current collector, electrical components, etc., to achieve the effect of improving strength and refining grain structure

Inactive Publication Date: 2016-08-10
SHANDONG JIANZHU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Invention Patent Application Publication No. CN103370275A proposes a copper foil for graphene manufacture and a graphene manufacturing method using the copper foil, but this invention mainly provides a low-cost production of graphene with a large area of ​​graphene. The manufacture method of the graphene of this copper foil does not relate to the preparation method of the nano-graphene copper foil of the present invention

Method used

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  • Preparation method of nano graphene copper foil
  • Preparation method of nano graphene copper foil

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Embodiment

[0020] In the first step, graphene, acetylene black, and PVB are weighed according to the weight ratio of (85):(10):(5), and dispersed in NMP at 30°C for 1 hour before use;

[0021] In the second step, the uniformly dispersed slurry in the first step is evenly coated on a copper strip with a width of 1000 mm and a thickness of 0.3 mm to form a graphene coating, and then dried at 90 ° C to obtain a graphene-coated surface. Copper strip;

[0022] In the third step, the side of the copper strip attached with graphene is folded in half from the middle, and folded into the same size so as to be re-stacked for the next cycle. The copper strip is annealed at 330°C for 1 hour;

[0023] In the fourth step, the rolled graphene copper strip is processed according to the second and third steps. This process is repeated 7 times to accumulate enough strain, and the grains are refined. At the same time, the graphene is evenly distributed on the copper strip. For the inner nano-graphene cop...

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Abstract

The invention relates to a preparation method of a composite and particularly relates to a preparation method of a nano graphene copper foil. The nano graphene copper foil can be applied to the field of lithium battery negative current collectors. The preparation method of the nano graphene copper foil comprises the following steps: uniformly coating graphene on the surface of a copper belt, folding a copper foil with surface coated by the graphene, accumulating rolling severe plastic deformation to obtain a graphene copper belt with a nano microstructure, cold rolling a nano graphene copper belt in which the graphene is uniformly distributed for four times, rolling the nano graphene copper belt in a manner of continuously reducing thickness to form the required specification of nano graphene copper foil.

Description

technical field [0001] The invention relates to a preparation method of a composite material, in particular to a preparation method of nano-graphene copper foil, which can be applied to the field of negative electrode current collectors of lithium batteries. Background technique [0002] Copper foil has low surface oxygen characteristics, can be attached to various substrates, such as metals, insulating materials, etc., and has a wide temperature range. Mainly used in electromagnetic shielding and antistatic, the conductive copper foil is placed on the substrate surface, combined with the metal substrate, it has excellent conductivity and provides the effect of electromagnetic shielding. It can be divided into: self-adhesive copper foil, double-lead copper foil, single-lead copper foil, etc. Among them, electronic grade copper foil (purity above 99.7%, thickness 5um-105um) is one of the basic materials of the electronics industry. With the rapid development of the electroni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66B82Y40/00
CPCB82Y40/00H01M4/665Y02E60/10
Inventor 徐淑波景财年林晓娟任国成范小红黄丽丽
Owner SHANDONG JIANZHU UNIV
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