CN114512348A - Preparation method and application of carbon paper derived flexible current collector - Google Patents
Preparation method and application of carbon paper derived flexible current collector Download PDFInfo
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- CN114512348A CN114512348A CN202210237102.XA CN202210237102A CN114512348A CN 114512348 A CN114512348 A CN 114512348A CN 202210237102 A CN202210237102 A CN 202210237102A CN 114512348 A CN114512348 A CN 114512348A
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- carbon paper
- current collector
- flexible current
- adhesive tape
- derived
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 98
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000002390 adhesive tape Substances 0.000 claims abstract description 29
- 239000004642 Polyimide Substances 0.000 claims abstract description 25
- 229920001721 polyimide Polymers 0.000 claims abstract description 25
- 238000004146 energy storage Methods 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 239000007772 electrode material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 11
- 239000011149 active material Substances 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 description 12
- -1 polypropylene Polymers 0.000 description 12
- 229920001155 polypropylene Polymers 0.000 description 12
- 230000007547 defect Effects 0.000 description 4
- 238000001000 micrograph Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/66—Current collectors
- H01G11/68—Current collectors characterised by their material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/66—Current collectors
- H01G11/70—Current collectors characterised by their structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- 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
- Y02E60/13—Energy storage using capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention relates to a preparation method and application of a carbon paper derived flexible current collector, and belongs to the technical field of materials. A preparation method of a carbon paper derived flexible current collector comprises the following steps: attaching the polyimide adhesive tape to the three-dimensional woven carbon paper, and applying pressure to enable the polyimide adhesive tape and the three-dimensional woven carbon paper to be tightly attached; and stripping the polyimide adhesive tape to obtain the carbon paper, namely the carbon paper derived flexible current collector. The flexible current collector derived from the synthesized carbon paper has good flexibility and mechanical strength, and the surface of the flexible current collector has a three-dimensional porous structure with vertical and horizontal gullies, so that compared with the original carbon paper with a relatively smooth surface, the flexible current collector has a rougher surface, the specific surface area is obviously increased, more active materials can be loaded, the flexible current collector can be used for preparing some flexible energy storage devices, the flexibility of the capacitor is improved, and the application of the capacitor is greatly expanded.
Description
Technical Field
The invention belongs to the technical field of materials, and particularly relates to a preparation method and application of a carbon paper derived flexible current collector.
Background
With the rapid development of society, traditional fuels such as coal, stone and oil are used and consumed in large quantities, non-renewable energy sources are gradually exhausted, and energy storage devices with higher efficiency gradually become research hotspots. As an electrochemical energy storage device, the capacitor has the advantages of high power density, long cycle life, quick charge and discharge, environmental protection and excellent performance, is widely concerned, and the research and development of different types of capacitors are gradually the focus of research in the field of energy storage. However, despite numerous advantages, capacitor development is still limited by several factors. How to improve the energy storage performance of the capacitor and change the strength characteristic of the capacitor, so that the application of the capacitor is more extensive and becomes a hot point problem.
In order to effectively solve the problems, an assumed scheme is provided, and the defect that the original application material carbon paper is extremely easy to bend is effectively overcome by means of the flexible supporting effect of the conductive adhesive tape. The scheme greatly expands the application scene of the capacitor, so that the capacitor can be reasonably applied when a flexible energy storage device is prepared, and the flexibility of the capacitor is improved; meanwhile, the carbon layer on the surface of the original electrode material carbon paper can be torn and peeled by virtue of the adhesive effect of the adhesive tape, so that the ultrathin carbon layer material is obtained, the surface of the ultrathin carbon layer material has a vertical and horizontal three-dimensional porous structure with gullies, and compared with the original smooth carbon paper, the ultrathin carbon layer material is rougher, the surface area is obviously increased, and more active substance materials can be loaded on the ultrathin carbon layer material. The electrochemical performance of the capacitor can be greatly improved by processing the carbon paper with the aid of the flexible adhesive tape, defects existing at the present stage of the capacitor can be repaired, and the method has important significance for research of novel super capacitors.
Disclosure of Invention
The invention provides a positive electrode material of a water system zinc ion battery, which can still have excellent cycle characteristics under high current density to overcome the defects of the prior art.
The technical scheme adopted by the invention is as follows:
a preparation method of a carbon paper derived flexible current collector comprises the following steps:
1) attaching the polyimide adhesive tape to the three-dimensional woven carbon paper, and applying pressure to enable the polyimide adhesive tape and the three-dimensional woven carbon paper to be tightly attached;
2) and stripping the polyimide adhesive tape to obtain the carbon paper, namely the carbon paper derived flexible current collector.
Further, in the preparation method of the carbon paper derived flexible current collector, in the step 1), the polyimide tape can resist the temperature of 300 ℃.
Further, in the preparation method of the carbon paper derived flexible current collector, in the step 1), the applied pressure cannot cause the carbon paper and the adhesive tape to break.
Further, in the preparation method of the carbon paper derived flexible current collector, in the step 2), the peeling speed is 0.3-0.5 cm/s.
The carbon paper derived flexible current collector prepared by the preparation method is used as an electrode material in an energy storage device.
The beneficial effects of the invention are:
1. the flexible support effect of the polyimide adhesive tape is utilized, the defect that carbon paper is easy to bend is overcome, the carbon paper has good flexibility and mechanical strength, and can be used for preparing flexible energy storage devices, the flexibility of the capacitor is improved, and the application of the capacitor is greatly expanded.
2. Through tearing and peeling of the polyimide adhesive tape, an ultrathin carbon layer can be obtained, and the surface of the ultrathin carbon layer is provided with a vertical and horizontal three-dimensional porous structure with gullies.
3. The carbon paper with a certain thickness can be repeatedly peeled for 10 times, and the utilization rate of the carbon paper is greatly increased.
Drawings
Fig. 1 is a scanning electron micrograph of a carbon paper-derived flexible current collector at 10.0KV x 5.0K magnification.
Fig. 2 is a scanning electron micrograph of the carbon paper-derived flexible current collector at 10.0KV x 10.0K magnification.
Fig. 3 is a scanning electron micrograph of the carbon paper-derived flexible current collector at 10.0KV x 25.0K magnification.
Fig. 4 is a photograph of a carbon paper and a carbon paper-derived flexible current collector in which a is carbon paper and b is a carbon paper-derived flexible current collector.
Fig. 5 is a photograph of a polyimide tape peeling step during the preparation of a carbon paper-derived flexible current collector.
Fig. 6 is a graph comparing thermal stability at 300 ℃ of the carbon paper current collector after polypropylene tape stripping prepared in example 2 and the carbon paper derived flexible current collector prepared in example 1, wherein the carbon paper current collector after polypropylene tape stripping is on the left side of the tray, and the carbon paper derived flexible current collector is on the right side.
Fig. 7 is a test experimental diagram of the conductivity performance of the carbon paper derived flexible current collector as an electrode material.
Detailed Description
Example 1
A preparation method of a carbon paper derived flexible current collector comprises the following steps:
1) selecting a polyimide adhesive tape which can resist the temperature of 300 ℃, wherein the size of the polyimide adhesive tape is suitable for the carbon paper to be jointed, jointing the polyimide adhesive tape and the three-dimensional woven carbon paper, and applying pressure to tightly joint the polyimide adhesive tape and the three-dimensional woven carbon paper, but the applied pressure can not cause the carbon paper and the adhesive tape to break;
2) carefully peeling off the polyimide adhesive tape at a peeling speed of 0.3-0.5cm/s to obtain the ultrathin carbon paper, namely the carbon paper derived flexible current collector with good flexibility and mechanical strength.
Fig. 1 is a scanning electron microscope image of the obtained carbon paper-derived flexible current collector at 10.0KV × 5.0K, fig. 2(a) and fig. 2(b) are scanning electron microscope images of the obtained carbon paper-derived flexible current collector at 10.0KV × 10.0K, and fig. 3 is a scanning electron microscope image of the obtained carbon paper-derived flexible current collector at 10.0KV × 25.0K, and it can be seen from fig. 1 to fig. 3 that the material surface has a three-dimensional porous structure with vertical and horizontal ravines, compared with the original carbon paper with a relatively smooth surface, the specific surface area is significantly increased, which is beneficial to loading more active materials, and the material has superior performance in the aspect of energy storage technology as a novel electrode material.
Fig. 4 is a physical photograph of carbon paper and a flexible current collector derived from the carbon paper, where a is the carbon paper, and b is the flexible current collector derived from the carbon paper, and it can be seen from fig. 4 that the original carbon paper has a smooth and flat surface, and the carbon paper peeled by the polyimide tape has an uneven porous structure on the surface after being torn by a mechanical force, and the scanning electron microscope images in fig. 1 to fig. 3 further prove that a large amount of ultrathin carbon layers and pores exist on the surface of the carbon paper, and the specific surface area is increased compared with the original carbon paper, which is beneficial to loading more active substances.
Fig. 5 is a photograph of a polyimide tape peeling step during the preparation of a carbon paper-derived flexible current collector. The stripping of the polyimide tape should be done slowly and carefully, at a speed of 0.3-0.5cm/s, without damaging the carbon layer of the carbon paper.
Example 2 comparative example
1) Selecting a polypropylene adhesive tape, wherein the size of the polypropylene adhesive tape is suitable for the carbon paper to be attached, attaching the polypropylene adhesive tape to the three-dimensional woven carbon paper, and applying pressure to enable the polypropylene adhesive tape and the three-dimensional woven carbon paper to be closely attached, wherein the applied pressure cannot cause the carbon paper and the adhesive tape to be broken;
2) carefully peeling off the polypropylene adhesive tape at a peeling speed of 0.3-0.5cm/s to obtain the carbon paper current collector after peeling off the polypropylene adhesive tape.
Fig. 6 is a graph comparing thermal stability at 300 ℃ of the carbon paper current collector after polypropylene tape stripping prepared in example 2 and the carbon paper derived flexible current collector prepared in example 1, wherein the carbon paper current collector after polypropylene tape stripping is on the left side of the tray, and the carbon paper derived flexible current collector obtained after polyimide tape stripping is on the right side of the tray. As can be seen from the thermal stability experimental results shown in fig. 6, the thermal stability of the carbon paper current collector peeled off from the polypropylene tape is insufficient due to poor heat resistance of the polypropylene tape, and the carbon paper current collector peeled off from the polyimide tape does not change even when being heated at 300 ℃ for 2 hours due to high temperature resistance of the polyimide tape, which proves that the carbon paper derived flexible current collector prepared by the invention has good thermal stability.
Example 3
A carbon paper derived flexible current collector as a test for electrical conductivity properties of electrode materials.
Fig. 7 is an experimental chart for testing the conductivity of the carbon paper derived flexible current collector as an electrode material, wherein two carbon paper derived flexible current collectors are connected into a circuit and are connected in series with a power battery and a small fan of an electrical appliance, and the rotation of the small fan can be observed. Therefore, the carbon paper derived flexible current collector material has good conductivity.
Claims (5)
1. A preparation method of a carbon paper derived flexible current collector is characterized by comprising the following steps:
1) attaching the polyimide adhesive tape to the three-dimensional woven carbon paper, and applying pressure to enable the polyimide adhesive tape and the three-dimensional woven carbon paper to be tightly attached;
2) and stripping the polyimide adhesive tape to obtain the carbon paper, namely the carbon paper derived flexible current collector.
2. The method for preparing the carbon paper-derived flexible current collector as claimed in claim 1, wherein the polyimide tape is resistant to 300 ℃ in step 1).
3. The method for preparing the carbon paper-derived flexible current collector as claimed in claim 1, wherein the applying pressure in step 1) does not cause the carbon paper and the adhesive tape to break.
4. The method for preparing the carbon paper derived flexible current collector as claimed in claim 1, wherein the peeling speed in step 2) is 0.3-0.5 cm/s.
5. Use of a carbon paper-derived flexible current collector prepared according to the preparation method of claim 1 as an electrode material in an energy storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210237102.XA CN114512348A (en) | 2022-03-10 | 2022-03-10 | Preparation method and application of carbon paper derived flexible current collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210237102.XA CN114512348A (en) | 2022-03-10 | 2022-03-10 | Preparation method and application of carbon paper derived flexible current collector |
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| Publication Number | Publication Date |
|---|---|
| CN114512348A true CN114512348A (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210237102.XA Pending CN114512348A (en) | 2022-03-10 | 2022-03-10 | Preparation method and application of carbon paper derived flexible current collector |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140047A (en) * | 2015-08-14 | 2015-12-09 | 中国科学院福建物质结构研究所 | Flexible current collector and preparation method and application thereof |
| CN105836736A (en) * | 2016-03-29 | 2016-08-10 | 江西师范大学 | Preparation method of flexible three-dimensional porous graphene electrode |
| CN108493001A (en) * | 2018-03-17 | 2018-09-04 | 东华理工大学 | A method of simply preparing graphite high flexibility electrode and flexible super capacitor |
| CN113838597A (en) * | 2021-08-19 | 2021-12-24 | 青岛科技大学 | MXene/IL/CP nano composite film, MXene/IL/CP interdigital electrode and micro super capacitor |
| CN114023570A (en) * | 2021-10-29 | 2022-02-08 | 山西大学 | Preparation method of layered graphite flexible current collector |
-
2022
- 2022-03-10 CN CN202210237102.XA patent/CN114512348A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140047A (en) * | 2015-08-14 | 2015-12-09 | 中国科学院福建物质结构研究所 | Flexible current collector and preparation method and application thereof |
| CN105836736A (en) * | 2016-03-29 | 2016-08-10 | 江西师范大学 | Preparation method of flexible three-dimensional porous graphene electrode |
| CN108493001A (en) * | 2018-03-17 | 2018-09-04 | 东华理工大学 | A method of simply preparing graphite high flexibility electrode and flexible super capacitor |
| CN113838597A (en) * | 2021-08-19 | 2021-12-24 | 青岛科技大学 | MXene/IL/CP nano composite film, MXene/IL/CP interdigital electrode and micro super capacitor |
| CN114023570A (en) * | 2021-10-29 | 2022-02-08 | 山西大学 | Preparation method of layered graphite flexible current collector |
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Application publication date: 20220517 |