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Nano-porous copper-loaded shape-controlled copper-based oxide composite as well as preparation method and application thereof

A technology of nanoporous copper and composite materials, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of complex preparation process and energy waste, and achieve the effects of simplifying the preparation process, avoiding energy waste and low cost

Inactive Publication Date: 2018-09-28
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process is relatively complicated, resulting in waste of energy

Method used

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  • Nano-porous copper-loaded shape-controlled copper-based oxide composite as well as preparation method and application thereof
  • Nano-porous copper-loaded shape-controlled copper-based oxide composite as well as preparation method and application thereof
  • Nano-porous copper-loaded shape-controlled copper-based oxide composite as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Select alloy composition Ti 50 Cu 45 Zr 5 According to the atomic percentage of each alloy element in the target alloy: Cu is 50at.%, Ti is 45at.%, and Zr is 5at.%. Weigh high-purity copper sheets, titanium rods, and zirconium rods with a mass fraction of 99.99% as the mother Alloy raw materials for standby (8g); put the weighed raw materials into a vacuum melting furnace, and repeatedly smelt them 5 times under the protection atmosphere of high-purity argon (purity is 99.99%) to ensure the uniformity of the master alloy composition, and obtain Ti 50 Cu 45 Zr 5 master alloy ingot.

[0039] Crush the master alloy ingot, take 2~3g and place it in a quartz tube with a hole in the lower end (0.7mm~1mm in diameter), and heat it to a molten state through an induction coil under a high-purity argon protective atmosphere, using a pressure difference (0.02MPa ~0.05MPa) spray-cast the molten alloy onto a high-speed rotating copper roller, and rapidly solidify to obtain an am...

Embodiment 2

[0051] The preparation of the amorphous ribbon is the same as in Example 1, except that the constant voltage parameter is set to 0.6V, and the time is 300 minutes to prepare the nanoporous copper-loaded nanosheet copper oxide composite material. All the other steps are the same as in Example 1.

[0052] The specific capacitance of the supercapacitor electrode sheet prepared in this example is 277.82F / g.

Embodiment 3

[0054] The preparation of the amorphous strip is the same as in Example 1, the constant voltage parameter is set to 0.3V, and the time is 40 minutes to prepare a nanowire copper oxide composite material (diameter 5-10nm, length 3-7μm) loaded with nanoporous copper and a large aspect ratio. . All the other steps are the same as in Example 1.

[0055] The specific capacitance of the supercapacitor electrode sheet prepared in this example is 622.51 F / g.

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Abstract

The invention relates to a nano-porous copper-loaded shape-controlled copper-based oxide composite as well as a preparation method and application thereof. The composite comprises an amorphous matrixat a core layer, nano-porous copper layers clamped at the two sides of the amorphous matrix and a copper-based oxide layer prepared through in situ oxidation, wherein the amorphous matrix is a TixCuyZrz alloy ingredient, x, y and z are atomic percents, x is more than or equal to 45 and less than or equal to 60, y is more than or equal to 40 and less than or equal to 50, z is more than or equal to1 and less than or equal to 5, and the sum of x, y and z is equal to 100; and the thickness of each nano-porous copper layer is 1.5-4[mu]m, ligament width is 32-55nm, and aperture size is 18-42nm. Theinvention simplifies preparation technology and avoids unnecessary energy waste, and copper-based oxides are generated through in situ oxidation on the surface of nano-porous copper and are firmly combined with a substrate, so that the composite can be taken as electrode slices of a supercapacitor independently.

Description

technical field [0001] The invention relates to the technical field of nano-copper oxide and cuprous oxide, in particular to a preparation method of a nano-porous copper-loaded morphology-controllable copper-based oxide composite material and its application in the field of supercapacitors. Background technique [0002] With the development of science and technology, energy and the environment have gradually become the focus of human attention. As a new type of energy storage element, supercapacitors have attracted much attention in the fields of electric vehicles and aerospace due to their high power, high specific capacity, fast charge and discharge, and good cycle stability. Electrode materials are an important research direction for supercapacitors, and copper oxide is considered to be a promising electrode material due to its low price, environmental protection, high theoretical capacity, and good catalytic performance. However, the CuO particles prepared by the tradit...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/46
CPCH01G11/24H01G11/30H01G11/46Y02E60/13
Inventor 李强杜晓静朱德民杨志道王兴华夏超群
Owner HEBEI UNIV OF TECH
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