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Preparation method and application of flexible current collector derived from carbon paper

A flexible current collector and carbon paper technology, applied in the field of materials, can solve the problems of easy bending of carbon paper, achieve the effect of improving flexibility, good flexibility and mechanical strength, and increasing utilization rate

Pending Publication Date: 2022-05-17
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to effectively solve the above problems, we propose a plan to effectively improve the defect that the original application material carbon paper is extremely easy to bend by using the flexible support of the conductive tape.

Method used

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  • Preparation method and application of flexible current collector derived from carbon paper
  • Preparation method and application of flexible current collector derived from carbon paper
  • Preparation method and application of flexible current collector derived from carbon paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation method of carbon paper derived flexible collector, comprising the following steps:

[0026] 1) Choose a temperature-resistant 300 °C polyimide tape, the size is suitable for the carbon paper to be fitted, the polyimide tape is fitted with the three-dimensional woven carbon paper, and the pressure is applied to make the two closely fitted, but the pressure applied cannot cause the carbon paper and tape to break;

[0027] 2) Carefully peel off the polyimide tape at a peeling speed of 0.3-0.5cm / s, and the ultra-thin carbon paper obtained is a flexible collector derived from carbon paper with good flexibility and mechanical strength.

[0028] Figure 1 Scanning electron microscopy diagram of flexible fluid collector derived from the resulting carbon paper at magnification of 10.0KV*5.0K, Figure 2 (a)、 Figure 2 (b) A scanning electron microscopy diagram of the flexible collector derived from the resulting carbon paper at magnification of 10.0KV*10.0K times, Figure 3...

Embodiment 2

[0031] Example 2 to proportional

[0032] 1) Select polypropylene tape, the size is suitable for the carbon paper to be fitted, the polypropylene tape is fitted with the three-dimensional woven carbon paper, and the pressure is applied to make the two closely fitted, but the pressure applied cannot cause the carbon paper and tape to break;

[0033] 2) Carefully peel off the polypropylene tape at a peeling speed of 0.3-0.5cm / s to obtain the carbon paper collection fluid after the polypropylene tape is peeled off.

[0034] Figure 6 Carbon paper collector after stripping polypropylene tape prepared for Example 2 and carbon paper collecting fluid derived from Example 1 at 300 ° C thermal stability comparison diagram, the left side of the tray is the carbon paper collection fluid after polypropylene tape peeling, and the right side is the carbon paper derived from the polyimide tape peeling obtained by flexible collector fluid. Pass Figure 6 The results of the thermal stability experi...

Embodiment 3

[0036] A carbon paper derived flexible collector as a test of the conductivity of electrode materials.

[0037] Figure 7 For the test plot of the conductivity of the carbon paper-derived flexible collector as the electrode material, two pieces of carbon paper-derived flexible collector are connected into the circuit, and the power supply battery and the small fan of the electrical appliance are connected in series, and the rotation of the small fan can be observed. It can be seen that the flexible collector material derived from the carbon paper has good electrical conductivity.

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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. The preparation method of the carbon-paper-derived flexible current collector comprises the following steps: attaching a polyimide adhesive tape to three-dimensionally woven carbon paper, and applying pressure to enable the polyimide adhesive tape to be tightly attached to the three-dimensionally woven carbon paper; and stripping off the polyimide adhesive tape to obtain carbon paper, namely the carbon paper-derived flexible current collector. The synthesized carbon paper derived flexible current collector has good flexibility and mechanical strength, the surface of the current collector has a three-dimensional porous structure with longitudinal and transverse gullies, compared with original carbon paper with a relatively smooth surface, the surface of the current collector is rougher, the specific surface area is remarkably increased, loading of more active materials is facilitated, the current collector can be used for preparing some flexible energy storage devices, and the application prospect is wide. The flexibility of the capacitor is improved, and the application of the capacitor is greatly expanded.

Description

Technical field [0001] The present invention belongs to the field of materials technology, specifically relates to a carbon paper derived flexible fluid collection method and application. Background [0002] With the rapid development of society, traditional fuels such as coal and oil are used and consumed in large quantities, and non-renewable energy sources are gradually depleted, and energy storage devices with higher efficiency have gradually become research hotspots. As an electrochemical energy storage device, capacitors have the advantages of high power density, long cycle life, rapid charging and discharging, green environmental protection, and excellent performance, which have received widespread attention, and the research and development of different types of capacitors has gradually become the focus of research in the field of energy storage. However, although there are many advantages of capacitors, their development is still limited by some factors. How to improve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/32H01G11/22H01G11/68H01G11/70H01G11/86
CPCH01G11/32H01G11/22H01G11/68H01G11/70H01G11/86Y02E60/13
Inventor 孟凡瑾马天翼黄子航李慧孙放放
Owner LIAONING UNIVERSITY
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