Stainless non-woven fabric based super-capacitor electrode material as well as preparation method and application

A supercapacitor, non-woven-based technology, used in the manufacture of hybrid capacitor electrodes, hybrid capacitor current collectors, and hybrid/electric double-layer capacitors, can solve the problems of lack of flexibility, poor mechanical strength, incompatibility, etc. Good specific surface area and flexibility

Active Publication Date: 2015-05-27
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although nickel foam has good conductivity and high specific surface area, it is not corrosion-resistant, has no flexibility, and is easy to break after repeated twisting
Although carbon cloth / paper has the advantages of acid and alkali resistance, good electrical conductivity, and good flexibility, it needs to be treated with a strong oxidant to be hydrophilic before growing active substances on carbon cloth / paper. high temperature, making it incompatible with many synthetic methods

Method used

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  • Stainless non-woven fabric based super-capacitor electrode material as well as preparation method and application
  • Stainless non-woven fabric based super-capacitor electrode material as well as preparation method and application
  • Stainless non-woven fabric based super-capacitor electrode material as well as preparation method and application

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Experimental program
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Effect test

specific Embodiment approach 1

[0026] Embodiment 1: In this embodiment, the preparation method of the stainless steel non-woven fabric-based electrode material with nanostructure grown by hydrothermal method is implemented according to the following steps:

[0027] 1. Cut the stainless steel non-woven fabric into 1×3cm 2 Put it into a 100mL beaker, then add acetone until the non-woven fabric is covered, ultrasonically treat for about 7min, and then ultrasonically treat with dilute hydrochloric acid for 7min. Rinse with deionized water repeatedly, and then sonicate with absolute ethanol for 7 minutes. Put into 80 ℃ forced air drying oven to dry.

[0028] 2. Preparation of hydrothermal growth nanostructure solution: 0.65gNi(NO 3 ) 2 , 1.3gCo(NO 3 ) 2 , 1.62g urea, 45mL deionized water, 45mL absolute ethanol.

[0029] 3. Put the reaction solution into a polytetrafluoroethylene-lined reaction kettle, and immerse the dried stainless steel non-woven fabric in the solution.

[0030] 4. Tighten the reaction ...

specific Embodiment approach 2

[0032] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the solution (5mmol Co(NO 3 ) 2 , 10 mmol NH 4 F, 25mmol Co(NH 2 )2 , 70mL H 2 O). Other steps and parameters are the same as those in Embodiment 1. That is, the growth of Co 3 o 4 Nanostructured stainless steel nonwoven-based electrode materials.

specific Embodiment approach 3

[0033] Embodiment 3: This embodiment is different from Embodiment 2 in that argon protection is added during heat treatment. Other steps and parameters are the same as in the second embodiment. A stainless steel non-woven fabric-based electrode material grown with CoO nanostructures was obtained. The effect of adding argon protection in this embodiment is to keep the Co 2+ Not oxidized by oxygen at high temperature.

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Abstract

The invention discloses a stainless non-woven fabric based super-capacitor electrode material as well as a preparation method and application. A stainless non-woven fabric is adopted as a substrate material, and a nano structure made of one of a metal oxide, a double-metal oxide, a double-metal sulfide, a metal hydroxide and a conductive polymer is grown on the substrate material in situ, so that the stainless non-woven fabric based super-capacitor electrode material of an in-situ grown nano structure can be obtained. When the substrate material is selected, compared with a carbon fabric and foamed nickel, the stainless non-woven fabric has the characteristics of light weight, high strength, rich active substances loaded in a unit area, and the like as the substrate material, both the mass ratio capacity and the area ratio capacitor of the electrode material prepared from the substrate material are greater than those of an electrode material prepared from the other two substrate materials. When the stainless non-woven fabric is adopted to prepare the super-capacitor electrode material, the integral area surrounded by a cyclic voltammetry curve is greater than those on the carbon fabric and the foamed nickel, and the capacitance of the electrode material based on the stainless steel non-woven fabric substrate is relatively high.

Description

technical field [0001] The invention relates to the preparation of a supercapacitor electrode material, in particular to a stainless steel non-woven fabric-based supercapacitor electrode material, a preparation method and an application. Background technique [0002] The increasing scarcity of traditional fossil energy resources and the deteriorating environment have strongly promoted the development of renewable energy such as solar energy and wind energy. However, solar energy and wind energy are volatile and intermittent, and effective energy storage devices are needed to ensure that they can work stably in the grid. At the same time, the rapid development of the electric vehicle industry also urgently requires the development of energy storage devices with low cost, environmental friendliness and high energy density. Supercapacitors, also known as electrochemical capacitors, are a new type of energy storage device between traditional capacitors and secondary batteries. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/46H01G11/48H01G11/86
CPCY02E60/13H01G11/68H01G11/28H01G11/30H01G11/46H01G11/86
Inventor 温广武周薇薇丁春艳
Owner HARBIN INST OF TECH AT WEIHAI
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