A kind of preparation method of isotropic conductive paper

An isotropic, conductive paper technology, applied in the field of composite materials, can solve problems such as complex preparation process and poor mechanical strength of electrodes, and achieve the effects of wide sources, enhanced mechanical properties, and guaranteed stability

Active Publication Date: 2022-07-22
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process of the above preparation method is complicated and the mechanical strength of the electrode is poor

Method used

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  • A kind of preparation method of isotropic conductive paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) The balsa wood is sliced ​​along the growth direction to obtain a wood substrate with a thickness of 0.4 mm and a length and width of 15×10 mm.

[0044] (2) The wood substrate obtained in step (1) is repeatedly rinsed with deionized water, and then placed at room temperature for 24 hours for later use.

[0045] (3) put the sample in step (2) into 2.5mol / L NaOH and 0.4mol / L Na 2 SO 3 The mixed aqueous solution was heated at 85 °C in a water bath for 2 h.

[0046] (4) Wash the part of the delignified wood substrate in step (3) with ethanol and deionized water in turn, and put the sample into FeCl 3 The solution was placed in a beaker, and then transferred to a vacuum drying oven for vacuum immersion for 2 h.

[0047] (5) Wash the sample obtained in step (4) with deionized water to remove excess solution, and freeze-dry it at -45° C. for 24 hours.

[0048] (6) The sample obtained in step (5) was cold-pressed with a cold press for 7 min, and the pressure was 1 Mpa. ...

Embodiment 2

[0052] (1) The poplar is sliced ​​along the growth direction to obtain a wood substrate with a thickness of 0.4 mm and a length and width of 15×10 mm.

[0053] (2) The wood substrate obtained in step (1) is repeatedly rinsed with deionized water, and then placed at room temperature for 24 hours for later use.

[0054] (3) put the sample in step (2) into 2.5mol / L NaOH and 0.4mol / L Na 2 SO 3 The mixed aqueous solution was heated at 85 °C in a water bath for 2 h.

[0055] (4) Wash the part of the delignified wood substrate in step (3) with ethanol and deionized water in turn, and put the sample into FeCl 3 The solution was placed in a beaker, and then transferred to a vacuum drying oven for vacuum immersion for 2 h.

[0056] (5) Wash the sample obtained in step (4) with deionized water to remove excess solution, and freeze-dry it at -45° C. for 24 hours.

[0057] (6) The sample obtained in step (5) was cold-pressed with a cold press for 7 min, and the pressure was 1 Mpa.

[...

Embodiment 3

[0061] (1) The paulownia wood is sliced ​​along the growth direction to obtain a wood substrate with a thickness of 0.4 mm and a length and width of 15×10 mm.

[0062] (2) The wood substrate obtained in step (1) is repeatedly rinsed with deionized water, and then placed at room temperature for 24 hours for later use.

[0063] (3) put the sample in step (2) into 2.5mol / L NaOH and 0.4mol / L Na 2 SO 3 The mixed aqueous solution was heated at 85 °C in a water bath for 2 h.

[0064] (4) Wash the part of the delignified wood substrate in step (3) with ethanol and deionized water in turn, and put the sample into FeCl 3 The solution was placed in a beaker, and then transferred to a vacuum drying oven for vacuum immersion for 2 h.

[0065] (5) Wash the sample obtained in step (4) with deionized water to remove excess solution, and freeze-dry it at -45° C. for 24 hours.

[0066] (6) The sample obtained in step (5) was cold-pressed with a cold press for 7 min, and the pressure was 1 M...

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Abstract

The invention discloses a preparation method of isotropic conductive paper, which comprises the following steps: slicing wood perpendicular to the growth direction to obtain a cross-section wood substrate; immersing the substrate in a delignification buffer solution, heating for delignification treatment; the obtained delignified wood substrate is immersed in ferric chloride solution and freeze-dried after immersion; the obtained sample is pressed by a cold press to obtain a conductive substrate, and then the sample and the pyrrole solution are sealed together, using in-situ The chemical vapor deposition method is used to synthesize polypyrrole on the surface of the conductive substrate in situ to obtain the isotropic conductive paper. The method of the invention has simple preparation process and mild reaction conditions, and has wide application prospects in the fields of electrochemistry and electromagnetic shielding.

Description

technical field [0001] The invention relates to a preparation method of a composite material, in particular to a preparation method of an isotropic conductive paper, and belongs to the field of composite materials. Background technique [0002] In recent years, flexible wearable electronic devices are expected to have high application value in portable electronic devices, implantable medical devices, and flexible displays, thus attracting great research interest. Among various devices, flexible supercapacitors have attracted much attention due to their high power density, fast charge-discharge characteristics, long cycle life, and good safety. Designing flexible electrodes with good electrochemical performance, high stability, and excellent mechanical properties is one of the keys to fabricating high-performance flexible supercapacitors. Flexible substrate materials (fibers, papers, films, and fabrics) have been used to fabricate flexible electrodes. Among them, paper-base...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/02B27K3/32B27K3/20B27K3/08B27K5/00B27K5/04B27K3/34B27D3/00H01G11/32H01G11/36H01G11/86
CPCB27K3/02B27K3/0207B27K3/32B27K3/20B27K3/08B27K5/0005B27K5/04B27K3/343B27D3/00H01G11/32H01G11/36H01G11/86
Inventor 郭洪武张伟业刘毅王蓓蓓孙璟萌
Owner BEIJING FORESTRY UNIVERSITY
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