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nanoporous ag/ruo 2 Composite materials and their preparation methods and applications

A nanoporous and composite material technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., to achieve good conductivity, shorten the required time, and enhance the effect of pseudocapacitance

Active Publication Date: 2020-08-18
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For existing preparations based on RuO 2 The problem of the supercapacitor electrode material, the object of the present invention is to provide a kind of nanoporous Ag / RuO 2 Composite material and its preparation method

Method used

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  • nanoporous ag/ruo <sub>2</sub> Composite materials and their preparation methods and applications
  • nanoporous ag/ruo <sub>2</sub> Composite materials and their preparation methods and applications
  • nanoporous ag/ruo <sub>2</sub> Composite materials and their preparation methods and applications

Examples

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Embodiment 1

[0038] A Nanoporous Ag / RuO 2 composite material, the nanoporous Ag / RuO 2 The composite material has a three-dimensional, bicontinuous nanoporous structure, and its pore size is 20-30nm.

[0039] A Nanoporous Ag / RuO 2 The preparation method of composite material, comprises the following steps:

[0040] (1) according to the atomic percentage 90% aluminum, 2.5% silver, the rest is the proportioning of ruthenium, takes by weighing pure metal material;

[0041] (2) Put the weighed aluminum, silver and ruthenium into the quartz tube, then put the quartz tube with metal raw materials into the vacuum induction furnace coil, and vacuum until the vacuum degree is less than 6×10 -3 Pa, turn on the smelting furnace switch, stop heating for 1 second after the aluminum melts into a molten state; then heat again for 3 seconds, and stop heating for 1 second after the silver and ruthenium melt into the aluminum metal liquid; then cycle the above heating process 3 times, Melt the alloy comp...

Embodiment 2

[0046] A Nanoporous Ag / RuO 2 composite material, the nanoporous Ag / RuO 2 The composite material has a three-dimensional, bicontinuous nanoporous structure, and its pore size is 30-40nm.

[0047] A Nanoporous Ag / RuO 2 The preparation method of composite material, comprises the following steps:

[0048] (1) according to atomic percentage 95% aluminum, 2.5% silver, the rest is the proportioning of ruthenium to take by weighing pure metal material;

[0049] (2) Put the weighed aluminum, silver and ruthenium into the quartz tube, then put the quartz tube with metal raw materials into the vacuum induction furnace coil, and vacuum until the vacuum degree is less than 6×10 -3 Pa, turn on the smelting furnace switch, stop heating for 2 seconds after the aluminum melts into a molten state; then heat again for 3 seconds, and stop heating for 2 seconds after the silver and ruthenium melt into the aluminum metal liquid; then cycle the above heating process 4 times, Melt the alloy compl...

Embodiment 3

[0054] A Nanoporous Ag / RuO 2 composite material, the nanoporous Ag / RuO 2 The composite material has a three-dimensional, bicontinuous nanoporous structure, and its pore size is 10-20nm.

[0055] A Nanoporous Ag / RuO 2 The preparation method of composite material, comprises the following steps:

[0056] (1) according to the example by atomic percentage: 95% aluminum, 3.5% silver, the rest is the proportioning of ruthenium to take by weighing pure metal material;

[0057] (2) Put the weighed aluminum, silver and ruthenium into the quartz tube, then put the quartz tube with metal raw materials into the vacuum induction furnace coil, and vacuum until the vacuum degree is less than 6×10 -3 Pa, turn on the smelting furnace switch, stop heating for 2 seconds after the aluminum melts into a molten state; then heat again for 5 seconds, and stop heating for 2 seconds after the silver and ruthenium melt into the aluminum metal liquid; then cycle the above heating process 5 times, Melt...

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Abstract

The invention discloses a nano-porous Ag / RuO2 composite material, wherein the nano-porous Ag / RuO2 composite material has a three-dimensional, bi-continuous nano-porous structure, and the pore size is10-40nm. The atomic percentage is as follows: 50-95% of aluminium, 2-45% of silver, and the balance of ruthenium. The pure metal material is weighed and a Al-Ag-Ru alloy strip is obtained through a vacuum rotary quenching method, a method of performing dealloying treatment in a sodium hydroxide solution is adopted, further annealing and XRD confirmation are performed, through obtaining the nano-porous Ag / RuO2 composite material, through scanning electron microscope analysis, the pore size of the obtained nano-porous structure is 10-40nm, relatively good microstructure uniformity is achieved, and Ag in the composite material has good conductivity, the pseudocapacitance of RuO2 can be enhanced, and some double-layer capacitance is also provided, and the nano-porous Ag / RuO2 composite materialis a potential supercapacitor electrode material.

Description

technical field [0001] The invention relates to the field of supercapacitor electrode materials, in particular to a nanoporous Ag / RuO 2 Composite material and its preparation method and its application in supercapacitor electrode material. Background technique [0002] With the aggravation of energy crisis and environmental pollution, the development and application of new energy storage and conversion devices is imminent. Currently, energy storage and conversion devices mainly include supercapacitors, fuel cells, and secondary batteries. Among them, supercapacitors have received extensive attention due to their high specific capacity and specific power, long service life and high safety. From the perspective of the working principle of supercapacitors, they are mainly divided into two categories: electric double layer capacitive energy storage and Faraday pseudocapacitive energy storage. The electrode material is the most important part of the supercapacitor, which direc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/46H01G11/26H01G11/86
CPCH01G11/26H01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 张弛张忠华杨为家梁萍何鑫
Owner WUYI UNIV