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A kind of preparation method of wood flexible supercapacitor and wood flexible porous electrode

A technology for supercapacitors and porous electrodes, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., to achieve the effects of simple process, good cycle stability, and increased specific surface area

Inactive Publication Date: 2016-08-17
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are no literature reports or patents on the preparation of wood flexible porous electrodes and their supercapacitors by polymerizing conductive polymers on wood cross-section thin slices.

Method used

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  • A kind of preparation method of wood flexible supercapacitor and wood flexible porous electrode
  • A kind of preparation method of wood flexible supercapacitor and wood flexible porous electrode
  • A kind of preparation method of wood flexible supercapacitor and wood flexible porous electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Slice the wood along the direction perpendicular to the axial direction to obtain a wood slice with a cross-section, and the thickness of the slice is: 50 μm;

[0032] (2) Soak the wood flakes in the pyrrole monomer liquid for 2 minutes, then take it out, and drain the liquid on the surface of the wood flakes;

[0033] (3) In the presence of ferric chloride, put the above-mentioned wood flakes into an aqueous solution of 0.2 mol / L hydrochloric acid, perform oxidative polymerization for 30 minutes, and the polymerization temperature is 15°C;

[0034] (4) Take out the wood slice after the reaction, wash it with deionized water, and dry it naturally to obtain a wood flexible porous electrode.

[0035] (5) Two pieces of wooden flexible porous electrodes were taken, separated by polyvinyl alcohol-phosphate gel electrolyte, and assembled into a wooden flexible supercapacitor.

[0036] The scanning electron microscope of the cross-section of the obtained wood as Figure 1...

Embodiment 2

[0038] (1) Slice the wood along the direction parallel to the axial direction to obtain a wood slice with a chord section, and the thickness of the slice is: 50 μm;

[0039] (2) Soak the wood flakes in the pyrrole monomer liquid for 2 minutes, then take it out, and drain the liquid on the surface of the wood flakes;

[0040] (3) In the presence of ferric chloride, put the above-mentioned wood flakes into an aqueous solution of 0.2 mol / L hydrochloric acid, perform oxidative polymerization for 30 minutes, and the polymerization temperature is 15°C;

[0041] (4) Take out the wood slice after the reaction, wash it with deionized water, and dry it naturally to obtain a wood flexible porous electrode.

[0042](5) Two pieces of wooden flexible porous electrodes were taken, separated by polyvinyl alcohol-phosphate gel electrolyte, and assembled into a wooden flexible supercapacitor.

[0043] The scanning electron microscope of the string section of the resulting wood is shown in Fi...

Embodiment 3

[0045] (1) Slice the wood along the direction perpendicular to the axial direction to obtain a wood slice with a cross-section, and the thickness of the slice is: 80 μm;

[0046] (2) Soak the wood flakes in the pyrrole monomer liquid for 5 minutes, then take it out, and drain the liquid on the surface of the wood flakes;

[0047] (3) In the presence of ammonium persulfate, put the above-mentioned wood flakes into an aqueous solution of 0.4mol / L hydrochloric acid, and carry out oxidative polymerization for 60 minutes at a polymerization temperature of 10°C;

[0048] (4) Take out the wood slice after the reaction, wash it with deionized water, and dry it naturally to obtain a wood flexible porous electrode.

[0049] (5) Two pieces of wooden flexible porous electrodes were taken, separated by polyvinyl alcohol-phosphate gel electrolyte, and assembled into a wooden flexible supercapacitor.

[0050] image 3 The cyclic voltammetry curve of the wood flexible supercapacitor at a sc...

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Abstract

The invention discloses a wooden flexible supercapacitor. The supercapacitor comprises wooden flexible porous electrodes; and the electrodes are separated by a polyvinyl alcohol-phosphoric acid gel electrolyte. Slicing the timber along the direction perpendicularly to the axial direction to obtain timber slices having cross sections; soaking the timber slices in conductive macromolecule monomer liquid and then taking out the timber slices and draining off the liquid on the surface of the timber slices; under the presence of an oxidizing agent, putting the timber slices into an inorganic acid aqueous solution to carry out oxidation polymerization reaction; and finally taking out the timber slices which finish reaction, cleaning the timber slices with deionized water and drying the timber slices naturally to obtain the wooden flexible porous electrodes. The natural timber is directly utilized as base material for preparing the electrodes, and the supercapacitor is assembled. The preparation process of the wooden flexible porous electrodes is simple, and the cost is low; and the assembled supercapacitor has good flexibility and circulation stability.

Description

technical field [0001] The invention belongs to the field of electrochemistry and new energy materials, and in particular relates to a wood flexible supercapacitor and a preparation method of the wood flexible porous electrode. Background technique [0002] With the development of society and the full arrival of the information age, various equipment and devices based on new energy materials have gradually entered the lives of the public. Supercapacitors have become an important research direction in the international new energy field because of their fast charging and discharging speed, environmental friendliness, and long cycle life. Recently, the development of supercapacitors that are ultra-thin, flexible, lightweight, low-cost and environmentally friendly has become a research hotspot. Flexible energy storage devices can store and supply energy for flexible display devices, wearable electronic devices, radio frequency identification (RFID) tags, etc. [0003] One way ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/26H01G11/86
CPCY02E60/13
Inventor 吕少一傅峰彭立民林兰英陈志林梁善庆卢克阳秦理哲
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY