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Nanoporous copper-silver supported manganese dioxide electrode sheet and preparation method thereof

A manganese dioxide electrode and nanoporous copper technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, can solve the problems of easy harm to the human body, complicated preparation process, and unfriendly environment, and achieve specific capacitance The effect of increasing the value, avoiding poor dispersion, and high conductivity

Active Publication Date: 2017-05-03
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-concentration strong acid is unfriendly to the environment as a reactant, and it is easy to cause harm to the human body during operation
The reaction also needs to be carried out at a temperature of 60-80°C, resulting in waste of energy and complicated preparation process

Method used

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  • Nanoporous copper-silver supported manganese dioxide electrode sheet and preparation method thereof
  • Nanoporous copper-silver supported manganese dioxide electrode sheet and preparation method thereof
  • Nanoporous copper-silver supported manganese dioxide electrode sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]According to the mass percent of each element in the target alloy: Cu is 45%, Zr is 45%, Ag is 10%, and the broken copper sheet (7.110g) that purity is 99.9wt%, zirconium particle (10.207g) and silver particle (2.682g) mixed to obtain the master alloy raw material; then the master alloy raw material is placed in a vacuum arc melting furnace, and 20g of pure titanium with a purity of 99.9wt% is added for melting as an oxygen-scavenging material, and then under the protection of argon, repeated melting for 5 Sub-master alloy (the master alloy needs to be turned every time), about 60 seconds each time, to ensure the uniformity of the alloy structure. Cu can be obtained with furnace cooling 45 Zr 45 Ag 10 alloy ingot.

[0038] Remove the surface oxide skin from the obtained alloy ingot, divide it into suitable sizes and put it into a quartz test tube, and put it into a quartz test tube at 8.0×10 -4 Under the vacuum degree of Pa, the alloy ingot is heated to melt, and the...

Embodiment 2

[0049] According to the mass percent of each element in the target alloy: Cu is 45%, Zr is 45%, Ag is 10%, the copper sheet (7.110g) that purity is 99.9wt%, zirconium grain (10.207g) and silver grain ( 2.682g) were mixed to obtain the master alloy raw material; then the master alloy raw material was placed in a vacuum arc melting furnace, and 20g of pure titanium with a purity of 99.9wt% was used as the oxygen-scavenging material, and under the protection of argon, the melting was repeated 5 times (each It is necessary to turn over the master alloy), about 60 seconds each time, to ensure the uniformity of the alloy structure. Cu can be obtained with furnace cooling 45 Zr 45 Ag 10 alloy ingot.

[0050] Remove the surface oxide skin from the obtained alloy ingot, divide it into suitable sizes and put it into a quartz test tube, and put it into a quartz test tube at 8.0×10 -4 Under the vacuum degree of Pa, the alloy ingot is heated to melt, and then the molten alloy is quickl...

Embodiment 3

[0056] According to the mass percent of each element in the target alloy: Cu is 45%, Zr is 45%, Ag is 10%, the copper sheet (7.110g) that purity is 99.9wt%, zirconium grain (10.207g) and silver grain ( 2.682g) were mixed to obtain the master alloy raw material; then the master alloy raw material was placed in a vacuum arc melting furnace, and 20g of pure titanium with a purity of 99.9wt% was used as the oxygen-scavenging material, and under the protection of argon, the melting was repeated 5 times (each It is necessary to turn over the master alloy), about 60 seconds each time, to ensure the uniformity of the alloy structure. Cu can be obtained with furnace cooling 45 Zr 45 Ag 10 alloy ingot.

[0057] Remove the surface oxide skin from the obtained alloy ingot, divide it into suitable sizes and put it into a quartz test tube, and put it into a quartz test tube at 8.0×10 -4 Under the vacuum degree of Pa, the alloy ingot is heated to melt, and then the molten alloy is quickl...

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Abstract

The invention relates to a nano-porous copper silver supported manganese dioxide electrode slice and a preparation method therefor. The cross section of the electrode slice comprises three layers. A middle core layer is an amorphous matrix. The other two sides are nano-porous copper silver. A hole wall and a surface of the nano-porous copper silver grow a layer of uniform thin manganese dioxide. The thickness of the electrode slice is about 25-35 mum. The thickness of an inside amorphous matrix layer is about 12-28 mum. The thickness of a single side of nano-porous copper silver or manganese dioxide composite electrode material layer is about 3-11 mum. The amorphous matrix comprises CuxZryAgz alloy components, wherein x is greater than or equal to 40 and less than or equal to 45, y is greater than or equal to 45 and less than or equal to 50, z is greater than or equal to 5 and less than or equal to 15, and x plus y plus z equals 100. The preparation method can realize independent support of the electrode slice. Compared with a conventional complicated process of flaking the electrode slice, the preparation method saves the step of adding substances such as a conductive agent, a binder and so on, thereby overcoming the defects in the prior art that active substances have poor dispersibility, are easy to fall off and have small effective specific surface area.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of supercapacitors, and in particular relates to a preparation method of a nanoporous copper-silver-supported manganese dioxide electrode sheet. [0003] Background technique: [0004] Supercapacitors have the characteristics of fast charging and discharging with high instantaneous current, wide operating temperature range, no memory effect, maintenance-free, safe, pollution-free, high power density, and long cycle life. At the same time, manganese dioxide is one of the metal oxides , because of its high theoretical specific capacitance value, low price, abundant reserves and non-toxicity, it can be used as a supercapacitor material. However, manganese dioxide particles are prone to clusters and have poor electrical conductivity, which greatly limits the capacitance performance. The current collector is a structure or part that collects current. Its main function is to gather the current generated by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/26H01G11/28H01G11/46H01G11/24H01G11/86
CPCY02E60/13
Inventor 秦春玲刘江云王志峰赵维民张磊
Owner HEBEI UNIV OF TECH
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