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Preparation method of highly flexible composite electrode

A composite material, highly flexible technology, applied in the field of materials, can solve the problems of inhibiting active components and electrolyte, low specific surface area and porosity

Active Publication Date: 2019-08-16
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Significant progress has been made in the research and development of electrode materials for supercapacitors, but the low specific surface area and porosity of the materials inhibit the direct contact of the active components with the electrolyte

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Prepare solution A, successively weigh 0.526g of dimethylimidazole, measure 0.278mL of pyrrole monomer dissolved in 5mL of water and 15mL of methanol, stir magnetically, and fully dissolve;

[0022] 2) weigh and soak the pre-treated filter paper in solution A for 1 hour to ensure that the filter paper is fully soaked;

[0023] 3) Prepare solution B, successively weigh 0.516g of zinc nitrate hexahydrate and 1.94g of anhydrous ferric chloride dissolved in 5mL of water and 15mL of methanol, stir magnetically, and fully dissolve;

[0024] 4) Take out the filter paper of the soaking solution A, suck off the surface filtrate, put it in the solution B for 20 seconds, take it out, and then put it in the solution A prepared separately for 20 seconds, and repeat it alternately for 10 times;

[0025] 5) Soak and rinse the filter paper with deionized water to remove the residual monomer or initiator on the surface, place the sample in a vacuum desiccator to constant weight, and ...

Embodiment 2

[0028] 1) Prepare solution A, successively weigh 0.789g of dimethylimidazole, measure 0.278mL of pyrrole monomer dissolved in 10mL of water and 10mL of methanol, stir magnetically, and fully dissolve;

[0029] 2) weigh and soak the pre-treated filter paper in solution A for 2 hours to ensure that the filter paper is fully soaked;

[0030] 3) Prepare solution B, successively weigh 0.516g of zinc nitrate hexahydrate and 1.94g of anhydrous ferric chloride dissolved in 10mL of water and 10mL of methanol, stir magnetically, and fully dissolve;

[0031] 4) Take out the filter paper of the soaking solution A, suck off the surface filtrate, put it in the solution B for 20 seconds, take it out, and then put it in the solution A prepared separately for 20 seconds, and repeat it alternately for 10 times;

[0032] 5) Soak and rinse the filter paper with deionized water to remove the residual monomer or initiator on the surface, place the sample in a vacuum desiccator to constant weight, a...

Embodiment 3

[0035] 1) Prepare solution A, successively weigh 1.052g of dimethylimidazole, measure 0.278mL of pyrrole monomer dissolved in 10mL of water and 10mL of methanol, stir magnetically, and fully dissolve;

[0036] 2) weigh and soak the pre-treated filter paper in solution A for 3 hours to ensure that the filter paper is fully soaked;

[0037] 3) Prepare solution B, successively weigh 0.516g of zinc nitrate hexahydrate and 1.94g of anhydrous ferric chloride dissolved in 10mL of water and 10mL of methanol, stir magnetically, and fully dissolve;

[0038] 4) Take out the filter paper of the soaking solution A, suck off the surface filtrate, put it in the solution B for 20 seconds, take it out, and then put it in the solution A prepared separately for 20 seconds, and repeat it alternately for 10 times;

[0039] 5) Soak and rinse the filter paper with deionized water to remove the residual monomer or initiator on the surface, place the sample in a vacuum desiccator to constant weight, a...

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Abstract

The invention discloses a preparation method of a highly flexible composite electrode, comprising the following steps: weighing and taking dimethylimidazole and pyrrole monomer in turn and dissolvingdimethylimidazole and pyrrole monomer in the water / methanol mixed solution to obtain a solution A; weighing and taking zinc nitrate hexahydrate and anhydrous ferric trichloride in turn, dissolving zinc nitrate hexahydrate and anhydrous ferric trichloride in the water / methanol mixed solution, and stirring the substances evenly to obtain a solution B; soaking filter paper in the solution A for 1-4h;taking the filter paper out and sucking the surface filtrate; putting the filter paper in the solution B for 20s and taking the filter paper out, and putting the filter paper in the solution A for 20s; repeating the previous step 10 times; soaking and washing the filter paper in de-ionized water to remove the surface residual; and drying the filter paper to a constant weight to obtain a highly flexible filter paper / ZIF-8 / polypyrrole functional composite material. The composite material obtained has excellent flexibility and high mass specific capacitance, and can be directly used as a workingelectrode without any binder. The size and thickness of the electrode material are controllable. The preparation process is simple, feasible, green and economical.

Description

technical field [0001] The invention belongs to the field of material technology, and in particular relates to a preparation method of a highly flexible composite material electrode. Background technique [0002] As the name suggests, flexible conductive materials have excellent flexibility compared to traditional conductive materials. When the material is deformed by external force or used under certain harsh conditions, the electrochemical performance will not be affected at all, thus improving the safety of electrode materials. In addition, the controllability of the size and thickness of the electrode material simplifies the assembly process of the capacitor, making the whole device lighter, saving costs, making its application more economical and environmentally friendly, and further broadening its application in supercapacitors, sensors, electronic skin and Applications of artificial intelligence. [0003] ZIF-8 is a kind of zeolite imidazolate framework material (ZIF...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/30H01G11/48
CPCH01G11/30H01G11/48H01G11/86Y02E60/13
Inventor 刘玉兰周红李亮喻湘华黄华波
Owner WUHAN INSTITUTE OF TECHNOLOGY
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