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Manufacturing method of silver nanowire and manganous-manganic oxide one-dimensional core-shell composite nanomaterial

A technology of manganese tetroxide and silver nanowires is applied in the manufacture of hybrid/electric double-layer capacitors, electrodes of hybrid capacitors, etc., which can solve the problems of poor conductivity, difficult adjustment of morphology, pore size and pore distribution, and unsatisfactory capacitance performance. Achieve the effect of good rate performance, suitable for large-scale production, and good cycle performance

Inactive Publication Date: 2017-05-24
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor conductivity of the material itself, and the difficulty in adjusting the shape, pore size, and pore distribution, the actual capacitance performance is not ideal.

Method used

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  • Manufacturing method of silver nanowire and manganous-manganic oxide one-dimensional core-shell composite nanomaterial
  • Manufacturing method of silver nanowire and manganous-manganic oxide one-dimensional core-shell composite nanomaterial
  • Manufacturing method of silver nanowire and manganous-manganic oxide one-dimensional core-shell composite nanomaterial

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Experimental program
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Effect test

Embodiment 1

[0020] A preparation method of a silver nanowire and manganese manganese tetraoxide one-dimensional core-shell nanocomposite, the steps are as follows:

[0021] 1) Add 1mL of silver nanowire-ethanol dispersion with a concentration of 5mg / mL into 50mL of absolute ethanol, stir magnetically to disperse evenly, and obtain a mixed solution;

[0022] 2) Add 1.670ml L concentration of 30mg / mL potassium permanganate solution dropwise to the above mixture, keep magnetic stirring at room temperature for 12 hours, wash with deionized water and absolute ethanol for 3 times, and vacuum dry at 60°C 12 hours, obtain brown powder;

[0023] 3) Put the above-mentioned brown powder in a tube furnace, calcinate at 400°C for 2 hours at a heating rate of 10°C per minute under an argon atmosphere, and cool naturally to room temperature to obtain silver nanowires and trioxide tetroxide Manganese one-dimensional core-shell composite nanomaterials.

[0024] figure 1 It is the SEM picture of silver ...

Embodiment 2

[0031] A preparation method of a silver nanowire and manganese manganese tetraoxide one-dimensional core-shell nanocomposite, the steps are as follows:

[0032] 1) Add 1mL of silver nanowire-ethanol dispersion with a concentration of 5mg / mL into 50mL of absolute ethanol, stir magnetically to disperse evenly, and obtain a mixed solution;

[0033] 2) Add 1.670 mL of potassium permanganate solution with a concentration of 30 mg / mL dropwise to the above mixture, keep magnetic stirring at room temperature for 12 hours, wash with deionized water and absolute ethanol for 3 times, and vacuum dry at 60 °C 12 hours, obtain brown powder;

[0034] 3) Put the above-mentioned brown powder in a tube furnace, calcinate at 300°C for 2 hours at a heating rate of 10°C per minute under an argon atmosphere, and cool naturally to room temperature to obtain silver nanowires and trioxide tetroxide Manganese one-dimensional core-shell composite nanomaterials.

[0035] The prepared silver nanowire an...

Embodiment 3

[0037] A preparation method of a silver nanowire and manganese manganese tetraoxide one-dimensional core-shell nanocomposite, the steps are as follows:

[0038] 1) Add 1mL of silver nanowire-ethanol dispersion with a concentration of 5mg / mL into 50mL of absolute ethanol, stir magnetically to disperse evenly, and obtain a mixed solution;

[0039] 2) Add 1.670mL potassium permanganate solution with a concentration of 30mg / mlL dropwise to the above mixture, keep magnetic stirring at room temperature for 12 hours, wash with deionized water and absolute ethanol for 3 times, and vacuum dry at 60°C 12 hours, obtain brown powder;

[0040] 3) Put the above-mentioned brown powder in a tube furnace, calcinate at 200°C for 2 hours at a heating rate of 10°C per minute under an argon atmosphere, and cool naturally to room temperature to obtain silver nanowires and trioxide tetroxide Manganese one-dimensional core-shell composite nanomaterials.

[0041] The prepared silver nanowire and tri...

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Abstract

A manufacturing method of a silver nanowire and manganous-manganic oxide one-dimensional core-shell composite nanomaterial is disclosed. The method comprises the following steps of 1) adding thick-silver nanowire-ethanol dispersion solution into absolute ethyl alcohol, carrying out magnetic stirring till that uniform dispersion is reached, and acquiring a mixed liquor; 2) adding a potassium permanganate solution dropwise into the above mixed liquor, under a room temperature, maintaining magnetic stirring for 12 hours, using deionized water and the absolute ethyl alcohol to carry out centrifugal washing for 3 times, at a 60 DEG C, drying for 12 hours in a vacuum state, and acquiring brown powder; and 3) putting the above brown powder into a tube furnace, calcining under an argon atmosphere, naturally cooling to the room temperature, and acquiring a target object. The method has advantages that the manufacturing method of the composite nanomaterial is simple and is easy to operate, and energy consumption is reduced; product components and contents can be adjusted; the composite material has a high specific capacity, a good rate capability and a good cycle performance; during a manufacturing process, an environment pollution is not made, green and environmental protection are achieved, and the method is suitable for large scale production.

Description

technical field [0001] The invention relates to the preparation of supercapacitor electrode materials, in particular to a preparation method of a one-dimensional core-shell composite nanomaterial of silver nanowires and trimanganese tetraoxide. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, are a new type of energy storage device between traditional capacitors and batteries. Supercapacitors are considered ideal energy storage devices due to their high power density, long cycle life, and wide operating temperature range. According to the different reaction mechanisms, supercapacitors can be divided into electric double layer capacitors and Faraday pseudocapacitors. Electric double layer capacitors store charge through the reversible electrostatic adsorption of electrolyte ions on the surface of active materials. Faraday pseudocapacitors store energy in the form of rapid redox reactions on the surface and bulk of active materials. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30H01G11/46
CPCY02E60/13H01G11/86H01G11/24H01G11/30H01G11/46
Inventor 高振赵云峰丁轶
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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