Polyaniline/phytic acid conductive hydrogel, preparation method thereof and flexible supercapacitor

A technology of conductive hydrogel and polyaniline, which is applied in the field of materials, can solve the problems of complex structure of flexible supercapacitors and large device thickness, and achieve in-situ growth, avoid the use of initiators, and achieve good uniformity

Inactive Publication Date: 2018-08-07
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the electrodes of existing flexible supercapacitors usually contain additives, such as conductive agent carbon black, binder PTFE or PVDF, etc., which make the structure of flexible supercapacitors complex, and the device is usually thick, and it is difficult to make the device very thin.

Method used

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  • Polyaniline/phytic acid conductive hydrogel, preparation method thereof and flexible supercapacitor
  • Polyaniline/phytic acid conductive hydrogel, preparation method thereof and flexible supercapacitor
  • Polyaniline/phytic acid conductive hydrogel, preparation method thereof and flexible supercapacitor

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preparation example Construction

[0032] The preparation method of a kind of polyaniline / phytic acid conductive hydrogel provided by the embodiment of the present invention comprises:

[0033] S1. Prepare a metal current collector electrode on a flexible substrate.

[0034] Further, the flexible substrate is selected from any one of polyethylene terephthalate, polyethylene, polypropylene, polyvinyl chloride, polystyrene, acrylic resin, epoxy resin or polyurethane.

[0035] Further, the metal current collector electrode is selected from at least one of gold, platinum, silver, copper, nickel, cobalt, manganese or iron.

[0036] Further optionally, gold is selected as the above-mentioned metal current collector electrode. The flexible substrate is polyethylene terephthalate.

[0037] Further, the metal current collector electrode is prepared on the flexible substrate by depositing the metal material on the flexible substrate by magnetron sputtering, vacuum evaporation, chemical vapor deposition or solution meth...

Embodiment 1

[0056] A kind of polyaniline / phytic acid conductive hydrogel provided in this embodiment, the preparation method is as follows:

[0057] A polyethylene terephthalate (PET) film with a thickness of 50 μm was selected, cut into a rectangle of 2 × 3 cm, ultrasonically cleaned several times with deionized water and acetone, and dried for later use. The mask plate of interdigitated structure is processed by ultraviolet laser cold processing technology. A mask plate was pasted on the cleaned PET film, and gold interdigitated electrodes were plated on the PET film by magnetron sputtering technology. The finger width of the interdigitated electrodes was 1 mm, and the finger spacing was 0.8 mm. Measure 2.21mL (2.4mmol) of 50wt% phytic acid solution, and add 1.10mL (12mmol) of aniline monomer into 60mL of 1mol / L sulfuric acid to obtain a reaction solution. Assemble the PET film coated with gold electrodes in the three-electrode structure, and immerse the interdigital electrode part in ...

Embodiment 2

[0059] A kind of polyaniline / phytic acid conductive hydrogel provided in this embodiment, the preparation method is as follows:

[0060] A polyethylene film with a thickness of 30 μm was selected, cut into a rectangle of 2×3 cm, ultrasonically cleaned several times with deionized water and acetone, and dried for later use. The mask plate of interdigitated structure is processed by ultraviolet laser cold processing technology. A mask plate was pasted on the cleaned polyethylene film, and platinum interdigitated electrodes were plated on the polyethylene film by vacuum evaporation. The finger width of the interdigitated electrodes was 1mm, and the interdigital spacing was 0.5mm. Measure 2.21mL (2.4mmol) of 50wt% phytic acid solution, add 1.10mL (12mmol) of aniline monomer into 60mL of 1mol / L H 3 PO 4 , to obtain a reaction solution. Assemble the polyethylene film coated with platinum electrodes in the three-electrode structure, and immerse the interdigital electrode part in t...

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Abstract

The invention relates to the field of materials, and particularly to a polyaniline / phytic acid conductive hydrogel, a preparation method thereof and a flexible supercapacitor. An electrochemical polymerization method is utilized for preparing the polyaniline / phytic acid conductive hydrogel, and use of an initiator can be effectively prevented. Furthermore a subsequent tedious cleaning process is saved, thereby greatly saving material preparation cost and time. The method can realize original-position growth of the material, and furthermore high homogeneity of the prepared material is realized.Therefore the device has high repeatability and high stability. According to the method, the load amount of an electrochemical active substance can be regulated through controlling polymerization time or concentration of each component in reaction solution, and furthermore an effect of controlling capacity of the flexible supercapacitor is realized.

Description

technical field [0001] The invention relates to the field of materials, in particular to a polyaniline / phytic acid conductive hydrogel, a preparation method thereof, and a flexible supercapacitor. Background technique [0002] In some existing technologies, the preparation method of polyaniline conductive hydrogel is mainly prepared by mixing components such as aniline monomer, skeleton material (polyvinyl alcohol), crosslinking agent (phytic acid, triaminophenylboronic acid) according to a certain ratio Obtain an aqueous solution, and then add an initiator (ammonium persulfate, etc.) to initiate a polymerization reaction, thereby obtaining a conductive hydrogel. In some other existing technologies, the synthesis of polyaniline-based hydrogels usually adopts a solution polymerization method: that is, aniline monomers, cross-linking agents and skeleton materials are dissolved in water to form a mixed solution, and then ammonium persulfate and other initiators are added to ini...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/48H01G11/86
CPCY02E60/13H01G11/48H01G11/86
Inventor 张海涛储翔周怡琳杨维清邓稳黄海超张鹤鹏韩宇
Owner SOUTHWEST JIAOTONG UNIV
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