CN113972378A - Preparation method of composite material of carbon nanotube film and IB group element simple substance - Google Patents
Preparation method of composite material of carbon nanotube film and IB group element simple substance Download PDFInfo
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- CN113972378A CN113972378A CN202111149707.5A CN202111149707A CN113972378A CN 113972378 A CN113972378 A CN 113972378A CN 202111149707 A CN202111149707 A CN 202111149707A CN 113972378 A CN113972378 A CN 113972378A
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- film
- carbon nanotube
- composite material
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- nanotube film
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to the technical field of compounding of nano materials and metal materials, in particular to a preparation method of a composite material of a carbon nano tube film and an IB group element simple substance. Firstly, the CNTs film is densified through absolute ethyl alcohol, and then the composite material of the carbon nano tube film and the I B family element simple substance is prepared through pressing through a tablet press. The method is used for solving the technical problem of compounding the carbon nanotube film and the metal material. The technical scheme has the advantages of simple operation, rapid preparation, capability of manufacturing the lithium ion battery cathode material, capability of reducing the electrode quality and higher energy density.
Description
Technical Field
The invention relates to a composite material of a nanometer material and a metal material, in particular to a preparation method of a composite material of a carbon nanotube film and an IB group element simple substance.
Background
At present, a copper foil is generally used as a current collector negative electrode of a lithium ion battery, but the mass of the battery is increased due to the large mass of the copper foil, and the energy density of the battery cannot be greatly improved. Materials with excellent conductivity and light weight are required to replace the specific gravity of copper foil in the electrode, so that the quality of the electrode is reduced, the quality of the battery is reduced, the cost of the copper foil materials is reduced, and the battery can obtain higher energy density.
The carbon nanotube film is an ideal nanometer material, the operation process of directly compounding the carbon nanotube film and the copper foil by using the prior art is complicated, and the compounding effect and the conductivity are not ideal, because the carbon nanotube film is formed by randomly stacking the carbon nanotube bundles, the combination mode is loose, the orientation is disordered and has poor compactness, and the mechanical property and the electrical property can not achieve the ideal effect. Carry out densification processing through specific solvent, usable solvent surface tension contracts carbon nanotube bundle, improves the inside stack density of carbon nanotube, and at the same time exerts certain pressure, and the clearance between the carbon nanotube bundle can obviously reduce, and when pressure reached a definite value, the carbon nanotube bundle can take place to collapse and no longer reply under less pressure, and mechanical properties and electrical properties after the densification all promoted by a wide margin.
Disclosure of Invention
The invention aims to solve the defects and provides a preparation method of a composite material of a carbon nanotube film and an IB group element simple substance.
In order to overcome the defects in the background art, the technical scheme adopted by the invention for solving the technical problems is as follows: the preparation method of the composite material of the carbon nano tube film and the IB group element simple substance enables the CNTs film to be tightly combined with the metal material under the pressure effect through the densification of the CNTs film by the absolute ethyl alcohol, and the size of the CNTs film is modified according to the requirement, and the preparation method comprises the following steps:
firstly, cutting an uncompacted CNTs film by using a scalpel according to the required size, wrapping a copper foil sample strip by using the CNTs film, extruding redundant bubbles, slightly flattening the surface, uniformly spraying absolute ethyl alcohol on the surface of a sample, and standing;
and secondly, clamping the prepared sample between two PTFE films, pressing by using a tablet press, and separating the sample strip from the PTFE films after pressing to finish the preparation of the sample strip.
According to another embodiment of the present invention, further comprising a standing time after spraying the absolute ethyl alcohol in the first step is ensured to be 5 to 7 min.
According to another embodiment of the present invention, it further comprises that the pressing pressure of the second step of the medium tablet press is 12 MPa.
According to another embodiment of the present invention, further comprising the second step of maintaining the pressure of the medium-pressure wafer press for 1 min.
The invention has the beneficial effects that: the preparation method of the composite material of the carbon nanotube film and the IB group element simple substance has the advantages of simple integral operation and rapid preparation, adopts absolute ethyl alcohol to densify and simultaneously applies pressure to the material, and has good composite effect of the carbon nanotube film and the metal material.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The preparation method of the composite material of the carbon nano tube film and the IB group element simple substance enables the CNTs film to be tightly combined with the metal material under the pressure effect through the densification of the CNTs film by the absolute ethyl alcohol, and the size of the CNTs film is modified according to the requirement, and the preparation method comprises the following steps:
firstly, cutting an uncompacted CNTs film by using a scalpel according to the required size, wrapping a copper foil sample strip by using the CNTs film, extruding redundant bubbles, slightly flattening the surface, uniformly spraying absolute ethyl alcohol on the surface of a sample, and standing;
and secondly, clamping the prepared sample between two PTFE films, pressing by using a tablet press, and separating the sample strip from the PTFE films after pressing to finish the preparation of the sample strip.
Wherein, the standing time after the absolute ethyl alcohol is sprayed in the first step is ensured to be 5-7 min.
Wherein, the pressure of the second step of pressing by the medium-pressure sheet machine is 12 MPa.
And in the second step, the pressure maintaining time of the medium-pressure sheet pressing machine is 1 min.
Examples
Firstly, cutting a copper foil (10 mu m) into a sample strip with the length of 4 cm and the width of 1.5 cm by using a knife, cutting a non-densified CNTs film into a sample with the length of about 3 cm and the width of about 2 cm by using a scalpel, and aligning and stacking the non-densified CNTs film and the left side of the copper foil; folding the excessive part on the right side of the copper foil to the left side, wrapping the copper foil, extruding redundant bubbles by using a PTFE film, and slightly flattening the surface; and (3) uniformly spraying absolute ethyl alcohol on the surface of the sample strip, standing for a period of time, standing for 3min, and marking.
And secondly, clamping the prepared sample strip between two PTFE films, placing the two PTFE films together in the center of a workbench of a tabletting machine for pressing, observing that a pressure gauge reaches the required working pressure of 12MPa, maintaining the pressure for 1min, taking down the sample from the workbench, separating the sample strip from the PTFE films, and placing the pressed sample strip into a sealing bag for storage.
And repeating the above steps to respectively manufacture sample strips which are sprayed with absolute ethyl alcohol and then are kept stand for 5min, 7min, 9min and 11min, and marking according to different keeping time.
According to experimental observation, the CNTs film which is not densified is attached to a copper foil, is sprayed with absolute ethyl alcohol, then is kept stand for a short time, and is divided into an inner layer and an outer layer, the inner layer is compounded with the copper foil, and the outer layer can be easily taken off; the standing time is 5-7min, and the best effect is achieved. The standing time is too short, the CNTs film is divided into an inner layer and an outer layer, the inner layer is compounded with the copper foil, and the outer layer can be easily torn off; the standing time is too long, and after the absolute ethyl alcohol is volatilized, the CNTs film is easy to adhere to the PTFE film in the pressing process to cause damage.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. A preparation method of a composite material of a carbon nanotube film and an IB group element simple substance is characterized by comprising the following steps: the CNTs film is densified through absolute ethyl alcohol, is tightly combined with a metal material under the action of pressure, and the size of the CNTs film is modified according to requirements, wherein the method comprises the following steps:
firstly, cutting an uncompacted CNTs film by using a scalpel according to the required size, wrapping a copper foil sample strip by using the CNTs film, extruding redundant bubbles, slightly flattening the surface, uniformly spraying absolute ethyl alcohol on the surface of a sample, and standing;
and secondly, clamping the prepared sample between two PTFE films, pressing by using a tablet press, and separating the sample strip from the PTFE films after pressing to finish the preparation of the sample strip.
2. The method of claim 1, wherein the step of preparing the composite material of the carbon nanotube film and the group IB element comprises: and the standing time after the absolute ethyl alcohol is sprayed in the first step is ensured to be 5-7 min.
3. The method of claim 1, wherein the step of preparing the composite material of the carbon nanotube film and the group IB element comprises: the pressing pressure of the medium-pressure sheet pressing machine in the second step is 12 MPa.
4. The method of claim 1, wherein the step of preparing the composite material of the carbon nanotube film and the group IB element comprises: and the pressure maintaining time of the medium-pressure sheet pressing machine in the second step is 1 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111149707.5A CN113972378A (en) | 2021-09-29 | 2021-09-29 | Preparation method of composite material of carbon nanotube film and IB group element simple substance |
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| CN202111149707.5A CN113972378A (en) | 2021-09-29 | 2021-09-29 | Preparation method of composite material of carbon nanotube film and IB group element simple substance |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943326A (en) * | 2015-05-28 | 2015-09-30 | 苏州捷迪纳米科技有限公司 | Carbon nano-tube film composite material preparation method |
| CN108117725A (en) * | 2017-12-27 | 2018-06-05 | 张万虎 | A kind of preparation method of high-strength high conductivity carbon nanomaterial/fluoropolymer resin composite membrane |
| CN108172319A (en) * | 2017-12-27 | 2018-06-15 | 张万虎 | A kind of preparation method of high-strength high conductivity carbon nanomaterial film |
| CN111462941A (en) * | 2020-04-13 | 2020-07-28 | 安徽宇航派蒙健康科技股份有限公司 | Carbon nano tube composite flexible conductive film and preparation method thereof |
-
2021
- 2021-09-29 CN CN202111149707.5A patent/CN113972378A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943326A (en) * | 2015-05-28 | 2015-09-30 | 苏州捷迪纳米科技有限公司 | Carbon nano-tube film composite material preparation method |
| CN108117725A (en) * | 2017-12-27 | 2018-06-05 | 张万虎 | A kind of preparation method of high-strength high conductivity carbon nanomaterial/fluoropolymer resin composite membrane |
| CN108172319A (en) * | 2017-12-27 | 2018-06-15 | 张万虎 | A kind of preparation method of high-strength high conductivity carbon nanomaterial film |
| CN111462941A (en) * | 2020-04-13 | 2020-07-28 | 安徽宇航派蒙健康科技股份有限公司 | Carbon nano tube composite flexible conductive film and preparation method thereof |
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