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Polypyrrole / graphite felt composite electrode and preparation method thereof

A composite electrode and polypyrrole technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of low cycle life and affecting practical applications, and achieve the effect of simple preparation method

Inactive Publication Date: 2014-02-05
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its low cycle life greatly affects its practical application, and further research is still needed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Preparation of pyrrole and p-toluenesulfonic acid aqueous solution: Weigh 0.01 mol p-toluenesulfonic acid and dissolve it in 100 mL deionized water to prepare 0.1 mol / L p-toluenesulfonic acid aqueous solution; weigh and p-toluenesulfonic acid group Pyrrole with an ion molar ratio of 1.5:1 was added to the above aqueous solution, and ultrasonicated for 30 min to obtain an aqueous solution of pyrrole and p-toluenesulfonic acid.

[0018] (2) Preparation of polypyrrole / graphite felt composite electrode: a three-electrode system was adopted, with oxidized pretreated graphite felt as the working electrode, platinum wire as the counter electrode, and a saturated calomel electrode as the reference electrode, prepared in step (1). The aqueous solution is used as the electrolyte, and the electrochemical cyclic voltammetric oxidation polymerization reaction is used. The voltage scanning range is 0.0V~1.5V, the scanning rate is 50mV / s, and the scanning cycle is 40 cycles. The wo...

Embodiment 2

[0021] (1) Preparation of pyrrole and sodium p-toluenesulfonate aqueous solution: Weigh 0.01 mol sodium p-toluenesulfonate and dissolve it in 100 mL deionized water to prepare 0.1 mol / L sodium p-toluenesulfonate aqueous solution; weigh and p-toluenesulfonate Pyrrole with a tosylate ion molar ratio of 1.5:1 was added to the above aqueous solution, and ultrasonicated for 30 min to obtain an aqueous solution of pyrrole and sodium p-toluenesulfonate.

[0022] (2) Preparation of polypyrrole / graphite felt composite electrode: a three-electrode system was adopted, with oxidized pretreated graphite felt as the working electrode, platinum wire as the counter electrode, and a saturated calomel electrode as the reference electrode, prepared in step (1). The aqueous solution is used as the electrolyte, and the electrochemical cyclic voltammetric oxidation polymerization reaction is used. The voltage scanning range is 0.0V~1.5V, the scanning rate is 50mV / s, and the scanning cycle is 40 cycl...

Embodiment 3

[0025] (1) Preparation of an aqueous solution of a mixture of pyrrole, p-toluenesulfonic acid and sodium p-toluenesulfonate: Weigh 0.005 mol p-toluenesulfonic acid and 0.005 mol p-toluenesulfonate and dissolve them in 100 mL of deionized water to prepare p-toluenesulfonate An aqueous solution with an acid ion concentration of 0.1 mol / L; weigh pyrrole with a molar ratio of 1.5:1 to the p-toluenesulfonate ion, put it in the above aqueous solution, and ultrasonicate for 30 min to obtain a mixture of pyrrole, p-toluenesulfonic acid and sodium p-toluenesulfonate of aqueous solution.

[0026](2) Preparation of polypyrrole / graphite felt composite electrode: a three-electrode system was adopted, with oxidized pretreated graphite felt as the working electrode, platinum wire as the counter electrode, and a saturated calomel electrode as the reference electrode, prepared in step (1). The aqueous solution is used as the electrolyte, and the electrochemical cyclic voltammetric oxidation po...

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PUM

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Abstract

The invention discloses a polypyrrole / graphite felt composite electrode and a preparation method thereof, oxidation pretreatment is conducted on a graphite felt, and the graphite felt is used as a working electrode, a platinum filament is used as a counter electrode, a saturated calomel electrode is used as a reference electrode, a mixing solution of one or more of pyrrole and benzenesulfonic acid, benzene sulfonate or derivatives of the benzene sulfonate is used as an electrolyte, and the polypyrrole / graphite felt composite electrode is prepared through an electrochemistry cyclic voltammetry oxidative polymerization reaction. The polypyrrole / graphite felt composite electrode not only has high energy storage density, but also has good cyclic stability, is simple in preparation technology, and has significant economical and social benefits.

Description

technical field [0001] The invention belongs to the field of preparation of electrodes for supercapacitors, and in particular relates to a polypyrrole / graphite felt composite electrode and a preparation method thereof. Background technique [0002] Polypyrrole, as an important conductive polymer, has great practical value in electrochemical energy storage devices due to its excellent electrochemical reversibility and high environmental stability in the current era when renewable resources are increasingly valued. . In 1973, Gardini G P (Gardini G P. Advances in Heterocyclic Chemistry, 1973, 15: 67-69) synthesized conductive polypyrrole in the form of black powder. Subsequently, Diaz A F (Diaz A F, Juan I, Castillo J A. Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1981, 129: 115-132), Yuying G (Yuying G, Lu Z, Hua B, Qi C, Gaoquan S. Journal of Electroanalytical Chemistry, 2006, 597: 13-18) and Hyuck L (Hyuck L, Hyeongkeun K, Mi S C, Jaeboong C, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/32H01G11/30C08G73/06
Inventor 李宝铭叶蕾蕾饶臻然郑玉婴
Owner FUZHOU UNIV