A kind of preparation method of copper foil/carbon nanotube/copper foil composite foil
A carbon nanotube and composite foil technology, applied in the field of materials, can solve the problems of increased surface roughness of copper foil, poor wettability of copper matrix, inability to achieve composite foil performance, etc., to reduce surface roughness and resistivity, improve The effect of tensile strength
Active Publication Date: 2021-05-14
JIANGXI UNIV OF SCI & TECH
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Problems solved by technology
However, in the preparation of carbon nanotube copper-based composite foil, the carbon nanotubes are prone to agglomeration in the electrolyte, so that they cannot be uniformly dispersed in the composite foil, and the effect of enhancing the performance of the composite foil cannot be achieved; at the same time, the surface of the carbon nanotubes is Inert, lack of active groups, poor wettability with copper substrate, low interface bonding strength; in addition, the addition of carbon nanotubes will cause the surface roughness of copper foil to increase, which is not conducive to the requirement of double-sided light for lithium battery copper foil
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Embodiment 1
[0030] The preparation method of the copper foil / carbon nanotube / copper foil composite foil provided by the present invention is further described, and the structural diagram is as follows figure 1 .
[0031] Example 1
[0032] (1) Pretreatment of carbon nanotubes: Take 1 g of original carbon nanotubes and add them to 100 mL of concentrated sulfuric acid:concentrated nitric acid=3:1 mixed acid solution, stir magnetically in a water bath at 70°C for 5 hours, and centrifuge and wash with absolute ethanol until The pH was close to 7, and vacuum drying was performed at 60°C for 6 hours to obtain surface-modified carbon nanotubes.
[0033] (2) Preparation of electroplating solution 1: Dissolve 212.5 g of copper sulfate pentahydrate in 970 mL of pure water, stir with a glass rod, and slowly add 30 mL of concentrated sulfuric acid to completely dissolve the copper sulfate.
[0034] (3) Preparation of electroplating solution 2: Weigh 0.1 g of surface-modified carbon nanotubes and a...
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Abstract
The invention discloses a preparation method of a copper foil / carbon nanotube / copper foil composite foil, which comprises additives PDDA, Cl ‑ Under the synergistic effect of MPS and the three, carbon nanotubes form a carbon nanotube / copper intermediate foil layer with a skeleton structure in the form of a bridge chain, which supports the mechanical properties of the thin copper foil, thereby improving the tensile strength and reducing surface roughness. degree and resistivity.
Description
technical field [0001] The invention relates to a method for preparing a copper foil / carbon nanotube / copper foil composite foil, in particular to a method for preparing a copper foil / carbon nanotube / copper foil composite foil by an electrodeposition method, and belongs to the field of material technology. Background technique [0002] Electrolytic copper foil, as the negative electrode collector, is the key raw material for the preparation of lithium-ion batteries. In recent years, with the rapid development of the new energy automobile industry, lithium-ion batteries, as the power source of automobiles, are developing in the direction of smaller volume and larger capacity, and higher requirements are placed on the performance and thickness of copper foil. As the thickness of the required copper foil decreases, the tensile strength also decreases, which easily causes the copper foil to break and affects the performance. Carbon nanotubes play an important role in the field o...
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IPC IPC(8): C25D7/06C25D3/58C25D15/00
CPCC25D3/58C25D7/0614C25D15/00
Inventor 唐云志张钰松樊小伟谭育慧刘耀杜鹏康师慧娟
Owner JIANGXI UNIV OF SCI & TECH