Polypyrrole hydrogel with controllable morphology and preparation method thereof and application of polypyrrole hydrogel to supercapacitor

A hydrogel and gel technology, which is applied in the field of novel polypyrrole hydrogels, can solve the problems of reducing the biocompatibility of hydrogels, decreasing electrical conductivity and the like, and achieves obvious redox performance, low cost and simple preparation method. fast effect

Inactive Publication Date: 2019-11-12
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional polymer hydrogel prepared by the above synthetic route has the following disadvantages: such as electronic properties and other physicochemical properties strongly depend on the polymer backbone and doping ion concentration; the introduction of non-conductive hydrogel matrix will lead to the decline of electrical conductivity and excessive The metal ions will reduce the biocompatibility of the hydrogel, etc.

Method used

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  • Polypyrrole hydrogel with controllable morphology and preparation method thereof and application of polypyrrole hydrogel to supercapacitor
  • Polypyrrole hydrogel with controllable morphology and preparation method thereof and application of polypyrrole hydrogel to supercapacitor
  • Polypyrrole hydrogel with controllable morphology and preparation method thereof and application of polypyrrole hydrogel to supercapacitor

Examples

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Effect test

Embodiment 1

[0031] Example 1: 0.6 mmol of pyrrole monomer was ultrasonically dispersed in 1 mL of isopropanol for 10 minutes, labeled as A stock solution; the strong oxidant APS and crosslinking agent TCPP were ultrasonically dispersed in 1 mL of deionized water in succession, where APS The concentration is 0.3 molL -1 , the amount of TCPP cross-linking agent substance is 0.015 mmol, and the B stock solution is obtained; both the A and B stock solutions are placed in the refrigerator at 4 °C for 10 minutes, and then the B solution is quickly poured into the A solution, and the manual quick vibration is passed. A one-step in situ cross-linking polymerization strategy was used to form a conductive polymer hydrogel, which was left to stand for 3 hours, and the prepared gel was alternately soaked in distilled water and ethanol for 48 hours; then freeze-dried, and the obtained product was used for TEM testing. The results showed that when the molar ratio of Py monomer to cross-linking agent TC...

Embodiment 2

[0032] Example 2: 0.6 mmol of pyrrole monomer was ultrasonically dispersed in 1 mL of isopropanol for 10 minutes, labeled as A stock solution; the strong oxidant APS and crosslinking agent TCPP were ultrasonically dispersed in 1 mL of deionized water in succession, where APS The concentration is 0.3 molL -1, the amount of TCPP cross-linking agent substance was 0.0075 mmol, and the B stock solution was obtained; both the A and B stock solutions were placed in the refrigerator at 4 °C for 10 minutes, and then the B solution was quickly poured into the A solution, and the manual quick vibration was passed. A one-step in situ cross-linking polymerization strategy was used to form a conductive polymer hydrogel, which was left to stand for 3 hours, and the prepared gel was alternately soaked in distilled water and ethanol for 48 hours; then freeze-dried, and the obtained product was used for TEM testing. The results show that when the molar ratio of Py monomer to cross-linking agent...

Embodiment 3

[0033] Example 3: 0.6 mmol of pyrrole monomer was ultrasonically dispersed in 1 mL of isopropanol for 10 minutes, labeled as A stock solution; the strong oxidant APS and crosslinking agent TCPP were ultrasonically dispersed in 1 mL of deionized water in succession, where APS The concentration is 0.3 molL -1 , the amount of the TCPP cross-linking agent is 0.001875 mmol, to the B stock solution; put the A and B stock solutions in the refrigerator at 4 ℃ for 10 minutes, quickly pour the B solution into the A solution, and shake it manually , a conductive polymer hydrogel was formed by a one-step in situ cross-linking polymerization strategy. After standing for 3 hours, the prepared gel was alternately soaked in distilled water and ethanol for 48 hours; then freeze-dried, and the obtained product was used for TEM testing. The results showed that when the molar ratio of Py monomer to cross-linking agent TCPP was 320 / 1, the morphology of the obtained hydrogel was irregular nanospher...

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Abstract

The invention belongs to the technical field of preparation of conductive polymer hydrogels, and provides a polypyrrole hydrogel with controllable morphology and a preparation method thereof and application of the polypyrrole hydrogel to a supercapacitor. The deficiencies and defects existing in the preparation of traditional polymer hydrogels are solved. The prepared polypyrrole hydrogel has thecontrollable morphology and excellent electrical conductivity and flexibility. The polypyrrole hydrogel is obtained by pouring dispersion liquid containing a crosslinking agent and a strong oxidant into dispersion liquid containing a polymer pyrrole monomer by one-step in-situ crosslinking polymerization, wherein the crosslinking agent is 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin, namely, TCPP, and the strong oxidant is ammonium persulfate or ferric chloride; and the molar ratio of monomer pyrrole to the crosslinking agent TCPP is (40 to 1) to (320 to 1). The polypyrrole hydrogel with thecontrollable morphology is prepared, the polypyrrole hydrogel is applied to the supercapacitor to avoid the addition of a polymer binder and a conductive active agent, and excellent energy storage performance is exhibited.

Description

technical field [0001] The invention belongs to the technical field of conductive polymer hydrogel preparation, and specifically relates to a polypyrrole hydrogel with controllable morphology and its preparation method and application in supercapacitors. , 10, 15, 20-Tetrakis(4-carboxyphenyl) porphyrin TCPP ratios yielded novel polypyrrole hydrogels with controllable morphology. Background technique [0002] Conductive polymer hydrogels (CPHs) are formed by highly cross-linked polymer chains, and have attracted great attention due to their large surface area, excellent biocompatibility, good hydrophilicity, and tunable physicochemical properties. interest. CPHs represent a promising class of polymeric materials for energy storage and energy conversion applications, which can provide a conductive monolithic framework for accelerated electron transport and provide micro- and mesopores within the polymer matrix to facilitate ion and molecular Diffusion increases the effective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08J3/075H01G11/24H01G11/48H01G11/86C08L79/04
CPCC08G73/0611C08J3/075C08J2379/04H01G11/24H01G11/48H01G11/86Y02E60/13
Inventor 王美玲刘旭光崔明珠刘伟峰
Owner TAIYUAN UNIV OF TECH
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