Flexible integrated supercapacitor based on conductive polymer and organic hydrogel, and preparation method thereof

A conductive polymer, supercapacitor technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc. The effect of reducing internal resistance, good capacitance performance and flexibility

Inactive Publication Date: 2019-05-14
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although still flexible at low temperature, the low ionic conductivity and ion mobility limit its capacitive performance at low temperature
What is more serious is that during the use of multi-layer stacked sheets, the external force will easily cause mechanical peeling damage between the layers, which will increase the internal resistance of the device and greatly reduce the capacitance performance of the device.

Method used

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  • Flexible integrated supercapacitor based on conductive polymer and organic hydrogel, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation of a flexible integrated supercapacitor based on polyaniline and organic hydrogel, the specific method is as follows:

[0023] 1) In parts by weight, add 2 parts of polyvinyl alcohol, 0.3 parts of 3-aminophenylboronic acid and 1 part of potassium chloride into a mixed solution of 13 parts of water and 6 parts of ethylene glycol, stir and dissolve at 90°C to obtain homogeneous viscous solution;

[0024] 2) Pour the viscous solution prepared in step 1) into a mold of 15mm*15mm*2mm and freeze at -20°C to obtain a polyvinyl alcohol electrolyte organic hydrogel;

[0025] 3) Immerse the polyvinyl alcohol electrolyte organic hydrogel prepared in step 2) in an aqueous solution containing aniline and ammonium persulfate (the molar ratio of aniline and ammonium persulfate is 1:1.2), and react at -4°C for 3 hours, Obtain polyvinyl alcohol electrolyte organic hydrogel coated with polyaniline on the surface;

[0026] 4) Wash the polyvinyl alcohol electrolyte organic ...

Embodiment 2

[0031] A preparation of a flexible integrated supercapacitor based on polypyrrole and organic hydrogel, the specific method is as follows:

[0032] 1) In parts by weight, add 6 parts of polyvinyl alcohol, 0.5 parts of 3-aminophenylboronic acid, and 3 parts of potassium chloride into a mixed solution of 40 parts of water and 18 parts of propylene glycol, stir and dissolve at 90°C to obtain a uniform viscosity solution;

[0033] 2) Pour the viscous solution prepared in step 1) into a mold of 20mm*20mm*2mm and freeze at -15°C to obtain a polyvinyl alcohol electrolyte organic hydrogel;

[0034] 3) Immerse the polyvinyl alcohol electrolyte organic hydrogel prepared in step 2) in an aqueous solution containing pyrrole and ammonium persulfate (the molar ratio of pyrrole and ammonium persulfate is 1:1.5), and react at -4°C for 6 hours, Obtain polyvinyl alcohol electrolyte organic hydrogel coated with polypyrrole on the surface;

[0035] 4) Wash the polyvinyl alcohol electrolyte orga...

Embodiment 3

[0040] A preparation of a flexible integrated supercapacitor based on polyaniline and organic hydrogel, the specific method is as follows:

[0041] 1) In parts by weight, add 4 parts of polyvinyl alcohol, 0.2 parts of 3-aminophenylboronic acid, and 2 parts of potassium chloride into a mixed solution of 30 parts of water and 15 parts of ethylene glycol, stir and dissolve at 90°C, and obtain a uniform viscous solution;

[0042] 2) Pour the viscous solution prepared in step 1) into a mold of 20mm*20mm*2mm and freeze at -20°C to obtain a polyvinyl alcohol electrolyte organic hydrogel;

[0043] 3) Immerse the polyvinyl alcohol electrolyte organic hydrogel prepared in step 2) in an aqueous solution containing aniline and ferric chloride (the molar ratio of aniline and ferric chloride is 1:1), and react at -4°C for 4 hours, Obtain polyvinyl alcohol electrolyte organic hydrogel coated with polyaniline on the surface;

[0044] 4) Clean the polyvinyl alcohol electrolyte organic hydrog...

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Abstract

The invention discloses a flexible integrated supercapacitor based on a conductive polymer and an organic hydrogel, and a preparation method thereof. The flexible integrated supercapacitor is composedof the conductive polymer and the organic hydrogel. The preparation method thereof comprises the steps of: preparing a polyvinyl alcohol electrolyte organic hydrogel from polyvinyl alcohol, 3-aminophenylboronic acid, potassium chloride and an antifreezing agent at first, then, effectively compositing the conductive polymer, 3-aminophenylboronic acid and polyvinyl alcohol together by utilization of the interaction of the hydroxyl of 3-aminophenylboronic acid and hydrogen bonds between hydroxyl groups of polyvinyl alcohol, and obtaining a flexible integrated gel state supercapacitor based on the conductive polymer and the organic hydrogel in the molecular level. The flexible integrated supercapacitor still can keep better flexibility and capacitive performance in a bending condition or at low temperature of minus 15-0 DEG C; and the preparation method is simple and easy to do, environment-friendly, and suitable for industrial production.

Description

technical field [0001] The invention relates to a flexible integrated supercapacitor based on conductive polymer and organic hydrogel and a preparation method thereof, belonging to the field of flexible supercapacitor and polymer chemistry. Background technique [0002] Supercapacitors and batteries are an integral part of building electronic products such as tablets and smartphones. With the development of wearable and weavable electronic devices, flexible solid-state supercapacitors have attracted more and more attention. Traditional supercapacitors contain liquid electrolytes, which are bulky and cannot be bent and folded. Liquid electrolytes may leak during experiments, causing safety hazards. Currently, hydrogel electrolytes are widely used in the construction of flexible supercapacitors. However, the hydrogel contains a large amount of water, which makes the constructed supercapacitor lose its flexibility at low temperature, and its electrochemical performance also d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/48H01G11/56H01G11/84
CPCY02E60/13
Inventor 喻湘华周红李亮熊丽君张桥
Owner WUHAN INSTITUTE OF TECHNOLOGY
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