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A kind of preparation method of layered structure paper-based carbon electrode

A carbon electrode and paper-based technology, which is applied in the field of layered structure paper-based carbon electrode preparation, can solve the problems of complex carbon electrode preparation process and single structure, and achieve the effects of environmental protection, prolonging service life and increasing conductivity

Active Publication Date: 2021-01-26
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 3) Most of them are powder or overall three-dimensional network, and the structure is relatively simple;
[0010] 4) The preparation process of most carbon electrodes doped with simple metals, metal oxides, graphene, and carbon nanotubes is complicated;

Method used

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  • A kind of preparation method of layered structure paper-based carbon electrode
  • A kind of preparation method of layered structure paper-based carbon electrode
  • A kind of preparation method of layered structure paper-based carbon electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Step 1) Take an appropriate amount of Co(NO 3 ) 2 It is formulated into an aqueous solution with a concentration of 2mol / L, and an appropriate amount of potassium tetraborate (K 2 B 4 o 7 ·5H 2 O) it is mixed with the aqueous solution that concentration is 2mol / L. Then take equal volumes of the two solutions and mix them to form a composite catalyst solution.

[0045] Step 2) Cut waste printing paper into squares of 60mm×60mm after drying, soak each sheet in the composite catalyst solution prepared in step 1) until the paper is completely soaked, take it out, and dry to constant weight.

[0046] Step 3) will be K according to the mass ratio 2 CO 3 : graphene oxide: water-soluble furfural resin (solid content 50%) = 5: 1: 10 ratio K 2 CO 3 Ultrasonic dispersion of graphene oxide in water-soluble furfural resin to prepare 200mL K 2 CO 3 - graphene-furfural resin mixed solution.

[0047] Step 4) Soak the paper sheet treated in step 2) in the above mixed resin s...

Embodiment 2

[0052] Step 1) Take an appropriate amount of NiCl 2 It is mixed with the aqueous solution 200ml that concentration is 3mol / L, takes appropriate Potassium Tetraborate (K 2 B 4 o 7 ·5H 2 O) it is mixed with the aqueous solution that concentration is 3mol / L. Then take equal volumes of the two solutions and mix them to form a composite catalyst solution.

[0053] Step 2) Dried the waste newspapers and cut them into squares of 50mm×50mm, soaking them one by one in the composite catalyst solution prepared in step 1) until the papers were completely soaked, taking them out and drying them to constant weight.

[0054] Step 3) will be Na according to mass ratio 2 CO 3 : carbon nanotubes: water-soluble phenolic resin (solid content 50%)=10:8:20 ratio K 2 CO 3 Ultrasonic dispersion of graphene oxide in water-soluble furfural resin to prepare 200mL Na 2 CO 3 - carbon nanotube - water-soluble phenolic resin mixed solution.

[0055] Step 4) Soak the paper sheet treated in step 2)...

Embodiment 3

[0060] Step 1) take an appropriate amount of FeCl 3 It is mixed with the aqueous solution 200ml that concentration is 4mol / L, takes appropriate amount of sodium tetraborate (Na 2 B 4 o 7. 10H 2 O) it is mixed with the aqueous solution that concentration is 4mol / L. Then take equal volumes of the two solutions and mix them to form a composite catalyst solution.

[0061] Step 2) After drying, the waste paper of old books is cut into squares of 40 mm×40 mm, soaked one by one in the composite catalyst solution prepared in step 1) until the paper is completely soaked, taken out, and dried to constant weight.

[0062] Step 3) will be NaHCO according to mass ratio 3 : carbon nanotubes: water-soluble phenolic resin (solid content 50%)=8:3:30 ratio NaHCO 3 Ultrasonic dispersion of graphene in water-soluble phenolic resin to prepare 200mL NaHCO 3 - carbon nanotube - water-soluble phenolic resin mixed solution.

[0063] Step 4) Soak the paper sheet treated in step 2) in the above ...

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Abstract

The invention provides a method for preparing a layered paper-based carbon electrode, comprising the following steps of: 1) immersing waste paper in a composite catalyst solution, saturating the wastepaper and then taking out and drying the waste paper; 2) dispersing an activator and a carbon material in water soluble thermosetting resin to obtain an activator-carbon material-water soluble thermosetting resin mixed solution; 3)immersing the waste paper impregnated with the composite catalyst in the activator-carbon material-water soluble thermosetting resin mixed solution, saturating the waste paper and then taking out and drying the waste paper; 4) stacking the dried waste paper layer by layer, hot-press bonding the dried waste paper to obtain a paper-based resin composite material; and5) placing the paper-based resin composite material in a clamping plate, sintering, cooling, and washing the paper-based resin composite material to obtain the paper-based layered electrode material.The paper-based carbon electrode prepared by the method has a macroscopically obvious layered structure and a microscopic three-dimensional network structure. The layered composite carbon electrode prepared by the method, when used as an electrode material of a supercapacitor, can achieve high specific capacitance.

Description

technical field [0001] The invention relates to the technical field of new energy supercapacitors, in particular to a method for preparing a paper-based carbon electrode with a layered structure. Background technique [0002] Supercapacitors are composed of porous electrode materials with high specific surface area, current collectors, porous battery separators, and electrolytes. They have the advantages of high power density, short charge and discharge time, long cycle life, and wide operating temperature range, and are widely used. Among them, the electrode material is the key factor that determines the performance and production cost of supercapacitors. Research and development of high-performance and low-cost electrode materials is an important part of the research and development of supercapacitors. [0003] The materials currently used as supercapacitor electrodes mainly include carbon materials, metal oxide materials and conductive polymer materials. Among them, carb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/26H01G11/30H01G11/34H01G11/36H01G11/44
CPCH01G11/26H01G11/30H01G11/34H01G11/36H01G11/44H01G11/86Y02E60/13
Inventor 余先纯孙振宇孙德林
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY