A carbon cloth loaded cote/coo/co nanosheet array electrode material and its application

A nanosheet array and electrode material technology, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of difficult preparation of arrays, and achieve the effect of wide source of raw materials, large contact area and low price

Active Publication Date: 2021-06-11
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current preparation of transition metal tellurides mostly adopts high-temperature sintering methods, and it is not easy to prepare arrays grown directly on current collectors. Therefore, simple and effective methods for preparing transition metal telluride arrays are urgently needed.

Method used

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  • A carbon cloth loaded cote/coo/co nanosheet array electrode material and its application
  • A carbon cloth loaded cote/coo/co nanosheet array electrode material and its application
  • A carbon cloth loaded cote/coo/co nanosheet array electrode material and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Cut the carbon cloth into regular-sized rectangles, then wash the carbon cloth three times with ethanol, then three times with deionized water, and set aside;

[0041] 2. Add Co(NO 3 ) 2 ·6H 2 O was added to deionized water to prepare 0.1M Co(NO 3 ) 2 ·6H 2 O solution;

[0042] 3. Using cyclic voltammetry to convert Co(OH) 2Deposit on carbon cloth, use carbon cloth as electrodeposition substrate and working electrode, Ag / AgCl as working electrode, Pt wire as counter electrode, Co(NO 3 ) 2 The solution is electrolyte, the voltage window is -0.8V~-1.2V, at 20mV s -1 The scanning rate cycle is 30 segments. After the electrodeposition is completed, take out the carbon cloth and wash it with deionized water for three times, then with ethanol for three times, and then dry it for later use;

[0043] 4. Weigh 77mg Te powder and disperse it in 50mL deionized water, add 110mg NaBH quickly under magnetic stirring 4 powder, continue to stir for 2 minutes to obtain a bl...

Embodiment 2

[0057] 1. Cut the carbon cloth into regular-sized rectangles, then wash the carbon cloth three times with ethanol, then three times with deionized water, and set aside;

[0058] 2. Add Co(NO 3 ) 2 ·6H 2 O was added to deionized water to prepare 0.1M Co(NO 3 ) 2 ·6H 2 O solution;

[0059] 3. Using cyclic voltammetry to convert Co(OH) 2 Deposit on carbon cloth, use carbon cloth as electrodeposition substrate and working electrode, Ag / AgCl as working electrode, Pt wire as counter electrode, Co(NO 3 ) 2 The solution is electrolyte, the voltage window is -0.8V~-1.2V, 20mV s -1 The scanning rate cycle is 30 segments. After the electrolysis is completed, take out the carbon cloth and wash it with ethanol three times, then wash it with deionized water three times, and then dry it for later use;

[0060] 4. Weigh 77mg Te powder and disperse it in 50mL deionized water, add 110mg NaBH quickly under magnetic stirring 4 powder, continue to stir for 2 minutes to obtain a black liq...

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Abstract

The invention discloses a carbon cloth-loaded CoTe / CoO / Co nanosheet array electrode material and its application, which is prepared by the following methods: 1. Cleaning the carbon cloth and preparing a cobalt salt solution; 2. Using carbon cloth as an electrode material Deposit substrate and working electrode, Co(OH) 2 Deposit on carbon cloth, after the electrodeposition is completed, take out the carbon cloth, clean it and dry it; 3. Put Te powder, NaBH 4 Mix evenly with deionized water to obtain a black liquid, then transfer it to a hydrothermal kettle, immerse the carbon cloth in the black liquid, and perform a hydrothermal reaction. After the reaction is completed, cool to room temperature, take out the carbon cloth, clean it and dry it. The material is Co(OH) 2 The nanosheet array is a sacrificial template, which is prepared by hydrothermal method. The reaction temperature is low and the energy consumption is low, which ensures the formation of the CoTe / CoO / Co array nanosheet morphology and fully exerts the electrochemical performance of the material. Therefore, the material It can be used to prepare pseudocapacitor electrodes for electrochemical energy storage.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy storage materials, in particular to a carbon cloth-loaded CoTe / CoO / Co nanosheet array electrode material and its application. Background technique [0002] With the increase of people's energy consumption, it is imminent to develop various energy conversion and energy storage equipment. As a typical energy storage device, supercapacitor has high energy density, adapts to modern fast-paced life, and has very high commercial value. From the energy storage mechanism, capacitors can be divided into electric double layer capacitors and pseudocapacitors. Electric double layer capacitors store energy by adsorbing charges on the surface of the electrode material, and have excellent long-term cycle stability. However, the capacity of the electrode depends on the specific surface area of ​​the material, and the capacity is too small to meet the requirements of modern people for energy storag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/32H01G11/36H01G11/46H01G11/86
CPCH01G11/24H01G11/32H01G11/36H01G11/46H01G11/86Y02E60/13
Inventor 唐一文陈明月吕刚
Owner HUAZHONG NORMAL UNIV
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