Manufacturing method for polypyrrole/conductive carbon cloth combined electrode, and application thereof

A composite electrode, conductive carbon cloth technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve problems such as poor cycle stability and performance

Active Publication Date: 2018-08-24
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when PPy is directly used as an active electrode material, its cycling stability in aqueous electrolytes is usually poor due to volume expansion / contraction and ion channel collapse.

Method used

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  • Manufacturing method for polypyrrole/conductive carbon cloth combined electrode, and application thereof
  • Manufacturing method for polypyrrole/conductive carbon cloth combined electrode, and application thereof
  • Manufacturing method for polypyrrole/conductive carbon cloth combined electrode, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 0.56g NaClO 4 Dissolve in 20mL deionized water and stir until fully dissolved.

[0028] (2) Add 1mL of pyrrole monomer to the above solution and stir thoroughly for 60min to prepare a solution containing 0.2M NaClO 4 And 5% (V / V) PPy electrolyte. figure 1 b is the SEM image of the sample.

[0029] (3) In the three-electrode system controlled by the electrochemical workstation, the constant potential method was selected, and the conductive carbon cloth was used as the working electrode, the platinum electrode was used as the counter electrode, and the saturated calomel electrode was used as the reference electrode, and placed in the above electrolyte. Set the initial voltage to 0.8V, and the electrochemical deposition time to 2min. After the deposition, it was rinsed repeatedly with deionized water and left to dry in a natural environment.

[0030] (4) Use this electrode as the negative electrode, use the platinum electrode as the counter electrode, and the...

Embodiment 2

[0033] (1) Weigh 0.56g NaClO 4 Dissolve in 20mL deionized water and stir until fully dissolved.

[0034](2) Add 1mL of pyrrole monomer to the above solution and stir thoroughly for 60min to prepare a solution containing 0.2M NaClO 4 And 5% (V / V) PPy electrolyte. figure 1 b is the SEM image of the sample.

[0035] (3) In the three-electrode system controlled by the electrochemical workstation, the constant potential method was selected, and the conductive carbon cloth was used as the working electrode, the platinum electrode was used as the counter electrode, and the saturated calomel electrode was used as the reference electrode, and placed in the above electrolyte. Set the initial voltage to 0.8V, and the electrochemical deposition time to 6min. After the deposition, it was rinsed repeatedly with deionized water and left to dry in a natural environment.

[0036] (4) Use this electrode as the negative electrode, use the platinum electrode as the counter electrode, and the ...

Embodiment 3

[0039] (1) Weigh 0.56g NaClO 4 Dissolve in 20mL deionized water and stir until fully dissolved.

[0040] (2) Add 1mL of pyrrole monomer to the above solution and stir thoroughly for 60min to prepare a solution containing 0.1M NaClO 4 And 5% (V / V) PPy electrolyte. figure 1 b is the SEM image of the sample.

[0041] (3) In the three-electrode system controlled by the electrochemical workstation, the constant potential method was selected, and the conductive carbon cloth was used as the working electrode, the platinum electrode was used as the counter electrode, and the saturated calomel electrode was used as the reference electrode, and placed in the above electrolyte. Set the initial voltage to 0.8V, and the electrochemical deposition time to 2min. After the deposition, it was rinsed repeatedly with deionized water and left to dry in a natural environment.

[0042] (4) Use this electrode as the negative electrode, use the platinum electrode as the counter electrode, and the...

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Abstract

The invention discloses a manufacturing method for a polypyrrole / conductive carbon cloth combined electrode, and application thereof on a supercapacitor. A potentiostatic method is used, a solution containing pyrrole monomer and sodium perchlorate (NaClO4) is used as an electrolyte, a polypyrrole thin film is deposited on the surface of a carbon cloth, and the thin film shows a sheet structure. In1 M KOH electrolyte, electrochemical performance evaluation is performed on the polypyrrole / carbon cloth in -1-0 V potential window range. Compared with performance of a blank carbon cloth and polypyrrole (polypyrrole / Ni) which is loaded on a base of foamed nickel, maximum area specific capacitance of the blank carbon cloth and the polypyrrole / Ni combined electrode is 2.29 F / cm<2>, after 1000 times of circulation, capacity retention ratio is 69.56%, and maximum capacity of polypyrrole / Ni is just 0.064 F / cm<2>. After the polypyrrole is combined with the carbon cloth, maximum specific capacitance can reach 3.18 F / cm<2>, and after 1000 times of circulation, capacity retention ratio reaches up to 96.35%, obviously superior to that of the blank carbon cloth and the polypyrrole / Ni.

Description

technical field [0001] The invention belongs to the field of supercapacitors, and in particular relates to the preparation of an electrode material utilizing the synergistic effect of polypyrrole and carbon cloth and its application in supercapacitors. Background technique [0002] Supercapacitor is a new type of energy storage device between conventional capacitors and secondary batteries, and has the advantages of high power density of conventional capacitors and high energy density of secondary batteries. In addition, supercapacitors also have the characteristics of no pollution to the environment, high efficiency, long cycle life, wide operating temperature range, and high safety. Supercapacitors have broad application prospects in new energy power generation, electric vehicles, information technology, aerospace, defense technology and other fields. [0003] At present, the commercial production of supercapacitors has been realized at home and abroad, but there are stil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/38H01G11/48H01G11/86
CPCH01G11/24H01G11/30H01G11/38H01G11/48H01G11/86Y02E60/13
Inventor 肖婷王书琳谭新玉向鹏姜礼华
Owner CHINA THREE GORGES UNIV
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