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Activation method of conductive carbon cloth and supercapacitor application of conductive carbon cloth

A technology of conductive carbon cloth and activation method, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., and can solve the problems of low electrochemical activity, small specific surface area, and low energy storage capacity of conductive carbon cloth

Active Publication Date: 2019-04-26
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with other carbon materials, commercialized original conductive carbon cloths are seldom used directly as energy storage materials, because on the one hand, the electrochemical activity of conductive carbon cloths is low, and on the other hand, its specific surface area is small. Causes its low energy storage capacity

Method used

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  • Activation method of conductive carbon cloth and supercapacitor application of conductive carbon cloth
  • Activation method of conductive carbon cloth and supercapacitor application of conductive carbon cloth
  • Activation method of conductive carbon cloth and supercapacitor application of conductive carbon cloth

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Clean the conductive carbon cloth: place the carbon cloth in 3M hydrochloric acid, deionized water, acetone, and absolute ethanol solution for ultrasonic cleaning for 20 minutes, and then dry it for use;

[0018] (2) Activate conductive carbon cloth: configure 1M KOH solution as electrolyte, use conductive carbon cloth as working electrode, and platinum sheet as counter electrode, adopt the cyclic voltammetry method in the two-electrode system of the electrochemical workstation, and the potential range is -1 Conductive carbon cloth was treated under the conditions of ~-0.9V and scan rate of 10mV / s, and the time was 10s. The unactivated conductive carbon cloth is marked as 1, and the activated carbon cloth is marked as 2.

[0019] (3) This electrode is used as the negative electrode, the platinum electrode is used as the counter electrode, and the saturated calomel electrode is used as the reference electrode to form a three-electrode test system. With 1M KOH as the ...

Embodiment 2

[0022] (1) Clean the conductive carbon cloth: place the carbon cloth in 3M hydrochloric acid, deionized water, acetone, and absolute ethanol solution for ultrasonic cleaning for 20 minutes, and then dry it for use;

[0023] (2) Activate conductive carbon cloth: configure 1M KOH solution as the electrolyte, use conductive carbon cloth as the working electrode, and platinum sheet as the counter electrode, adopt the cyclic voltammetry method in the two-electrode system of the electrochemical workstation, and the potential range is -0.9 The conductive carbon cloth was treated under the conditions of ~-0.8V and a scan rate of 10mV / s, and the time was 10s. The unactivated conductive carbon cloth is marked as 1, and the activated carbon cloth is marked as 3.

[0024] (3) Use this electrode as the negative electrode, use the platinum electrode as the counter electrode, and the saturated calomel electrode as the reference electrode to form a three-electrode test system, use 1MKOH as th...

Embodiment 3

[0027] (1) Clean the conductive carbon cloth: place the carbon cloth in 3M hydrochloric acid, deionized water, acetone, and absolute ethanol solution for ultrasonic cleaning for 20 minutes, and then dry it for use;

[0028] (2) Activate conductive carbon cloth: configure 1M KOH solution as electrolyte, use conductive carbon cloth as working electrode, and platinum sheet as counter electrode, adopt the cyclic voltammetry method in the two-electrode system of the electrochemical workstation, and the potential range is -1 The conductive carbon cloth was treated under the conditions of ~-0.9V and a scan rate of 5mV / s, and the time was 20s. The unactivated conductive carbon cloth is marked as 1, and the activated carbon cloth is marked as 4.

[0029] (3) Use this electrode as the negative electrode, use the platinum electrode as the counter electrode, and the saturated calomel electrode as the reference electrode to form a three-electrode test system, use 1MKOH as the electrolyte, ...

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Abstract

The invention discloses an activation method of conductive carbon cloth and supercapacitor application of the conductive carbon cloth. A 1M KOH solution is used as an electrolyte solution, a two-electrode system is adopted, cyclic voltammetry treatment is carried out under a certain condition, and the activated conductive carbon cloth can be obtained. In the 1M KOH electrolyte solution, electrochemical performance evaluation is carried out on the conductive carbon cloth in a -1 to 0V electric potential window range, performance comparison is carried out on the conductive carbon cloth and original carbon cloth which does not perform activating treatment, the capacity of the original carbon cloth is 1.40 F / cm<2>, the maximum capacity of the carbon cloth after activating treatment can reach 1.84 F / cm<2>, and it is explained that the activation treatment method can obviously improve the specific capacitance of the carbon cloth.

Description

technical field [0001] The invention belongs to the field of supercapacitors, and in particular relates to a method for activating conductive carbon cloth and its application in supercapacitors. Background technique [0002] Due to the fossil fuel crisis and the increasing demand for renewable energy, the development of clean energy and high-performance electrochemical energy storage devices has become a major issue related to human survival and development. At the same time, with the rapid development of the electronics and information industries, people have higher and higher requirements for energy storage devices. Compared with lithium-ion batteries, supercapacitors have strong advantages in power density and high stability, which makes them It has been widely used in portable electronics, hybrid electric vehicles and backup energy systems. However, supercapacitors still have problems such as high price and low energy density. Therefore, under the premise of maintaining...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/34H01G11/26
CPCH01G11/26H01G11/34H01G11/86Y02E60/13
Inventor 肖婷王书琳车鹏程谭新玉向鹏姜礼华
Owner CHINA THREE GORGES UNIV
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