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Porous CoAl bimetal hydroxide@carbon fabric composite electrode material and preparation method thereof

A hydroxide and composite electrode technology, applied in the field of material chemistry, can solve problems such as easy agglomeration and poor conductivity of bimetallic oxides, achieve high specific capacitance, overcome poor cycle performance, and have strong mechanical flexibility

Inactive Publication Date: 2018-10-16
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is simple to operate and environmentally friendly, and the obtained porous CoAl double metal hydroxide@carbon cloth composite electrode material can solve the shortcomings of the double metal oxide in the prior art, such as poor electrical conductivity and easy agglomeration, and at the same time, the composite electrode material has Good cycle stability and mechanical flexibility

Method used

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  • Porous CoAl bimetal hydroxide@carbon fabric composite electrode material and preparation method thereof
  • Porous CoAl bimetal hydroxide@carbon fabric composite electrode material and preparation method thereof
  • Porous CoAl bimetal hydroxide@carbon fabric composite electrode material and preparation method thereof

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Embodiment 1

[0034] A method for preparing a porous CoAl double metal hydroxide@carbon cloth composite electrode material, comprising the following steps:

[0035] (1) Pretreatment of carbon cloth

[0036] a. Cut the carbon cloth into 2*2cm 2 The shape was washed successively with deionized water, acetone, ethanol, and deionized water for 15 minutes, and then washed twice with deionized water (the mass percent concentration of the acetone is 60-98%, and ethanol is absolute ethanol) ;

[0037] b. Then vacuum dry at 60° C. for 12 hours.

[0038] (2) Preparation of CoAl hydroxide

[0039] a. First, at room temperature, according to the mass ratio, add 150mg of cobalt nitrate and 120mg of aluminum nitrate into a 200ml beaker, and add 80ml of deionized water into it, stir magnetically for 20min until completely mixed;

[0040] b. Then add 150 mg of urea and 40 mg of ammonium fluoride to the above solution, and stir magnetically for 20 minutes until the mixture is evenly mixed to obtain a do...

Embodiment 2

[0050] A method for preparing a porous CoAl double metal hydroxide@carbon cloth composite electrode material, comprising the following steps:

[0051] (1) Pretreatment of carbon cloth

[0052] a. Cut the carbon cloth into 2.5*2.5cm 2 The shape was washed successively with deionized water, acetone, ethanol, and deionized water for 15 minutes, and then washed twice with deionized water (the mass percent concentration of the acetone is 60-98%, and ethanol is absolute ethanol) ;

[0053] b. Then vacuum dry at 60° C. for 12 hours.

[0054] (2) Preparation of CoAl hydroxide

[0055] a. First, at room temperature, according to the mass ratio, add 200mg of cobalt nitrate and 150mg of aluminum nitrate into a 200ml beaker, and add 120ml of deionized water into it, stir magnetically for 20min until completely mixed;

[0056] b. Then add 300 mg of urea and 50 mg of ammonium fluoride to the above solution, and stir magnetically for 20 minutes until the mixture is evenly mixed to obtain...

Embodiment 3

[0065] A method for preparing a porous CoAl double metal hydroxide@carbon cloth composite electrode material, comprising the following steps:

[0066] (1) Pretreatment of carbon cloth

[0067] a. Cut the carbon cloth into 2*2cm 2 The shape was washed successively with deionized water, acetone, ethanol, and deionized water for 15 minutes, and then washed twice with deionized water (the mass percent concentration of the acetone is 60-98%, and ethanol is absolute ethanol) ;

[0068] b. Then vacuum dry at 60° C. for 12 hours.

[0069] (2) Preparation of CoAl hydroxide

[0070] a. First, at room temperature, according to the mass ratio, add 260mg of cobalt nitrate and 160mg of aluminum nitrate into a 200ml beaker, and add 120ml of deionized water into it, stir magnetically for 30min until completely mixed;

[0071] b. Then add 400 mg of urea and 60 mg of ammonium fluoride to the above solution, stir magnetically for 30 minutes until the mixture is uniform, and obtain a double m...

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Abstract

The invention discloses a porous CoAl bimetal hydroxide@carbon fabric composite electrode material and a preparation method thereof. The preparation method comprises the steps of firstly, preparing aCo salt and Al salt mixed solution, and adding urea and ammonium fluoride for stirring and mixing; secondly, immersing the processed carbon fabric into the mixed solution, and obtaining a CoAl hydroxide loaded on the carbon fabric by hydrothermal reaction; and finally, immersing the CoAl hydroxide loaded on the carbon fabric into (0.1-0.3)mol / L of sodium hydroxide solution for normal-temperature immersion and etching to obtain the composite electrode material. The porous CoAl bimetal hydroxide@carbon fabric composite electrode material obtained by the method has favorable specific capacitancevalue and is good in cycle stability, the mechanical strength and the flexibility of the electrode are good, certain development guidance is provided for an intelligent, convenient, light and flexibleelectronic product which is constantly searched in modern science and technology, and the electrode material is one of energy materials with great development in future.

Description

technical field [0001] The invention belongs to the technical field of material chemistry and relates to a composite electrode material with a porous structure, in particular to a porous CoAl double metal hydroxide@carbon cloth composite electrode material and a preparation method thereof. Background technique [0002] In the era of rapid technological development in the 21st century, people's living standards are gradually improving, and at the same time, environmental problems cannot be ignored. With the depletion of fossil energy and the aggravation of environmental pollution, people are constantly seeking new energy to replace traditional fossil energy. Electric energy is undoubtedly the best choice, and it is one of the most widely used clean energy among many energy storage devices. In this electronic society, we cannot imagine the reality without electrochemical energy storage systems, a world without electronic portable devices such as smartphones, laptops or iPods,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/26H01G11/30H01G11/86B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01G11/26H01G11/30H01G11/86Y02E60/13
Inventor 韩生赵豆豆常兴黄奇常伟林静静刘玥冉连俊颜松姚璐刘业萍常哲馨解麦莹陈凤飞薛原廖天明钱曾李林飞
Owner SHANGHAI INST OF TECH
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