Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing rare-earth aluminum alloy electrode material

An aluminum alloy electrode and rare earth technology, which is applied in the field of preparation of aluminum alloy electrode materials for high-performance batteries, can solve the problems of few researches on rare earth doped aluminum alloy anodes and unsatisfactory results, and achieve large output current and high specific energy , The effect of negative open circuit voltage

Inactive Publication Date: 2011-07-13
CENT SOUTH UNIV
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many alloy systems studied, but the effect is not ideal, and there are few studies on rare earth doped aluminum alloy anodes.
The research on the solidification of aluminum alloys in magnetic fields mainly involves aluminum alloy structural materials, and there are no relevant reports on the research of aluminum alloys as electrode materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing rare-earth aluminum alloy electrode material
  • Method for preparing rare-earth aluminum alloy electrode material
  • Method for preparing rare-earth aluminum alloy electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Using chemically pure Al (99.9%) as the raw material, the composition ratio of the selected aluminum alloy anode is: aluminum: 90%, zinc: 9.40%, Ga: 0.10%; In: 0.05%; Pb: 0.09%; Sn: 0.05%; Mn: 0.10%; Re: 0.20%, put the measured aluminum in a corundum crucible, in an argon protective atmosphere, melt it with a resistance furnace, remove slag and gas, wrap the rest of the alloy elements in aluminum foil and put them in order, completely After melting, remove the slag, stir, keep the temperature for 2 hours, pour it into a graphite mold to cast an ingot, and apply a 0.2T AC magnetic field to solidify. Press the aluminum ingot into thin slices of about 1 mm for use. The rare earth aluminum alloy sheet is made into a working area of ​​1cm 2 square with a copper wire attached to the end. The non-working area is sealed with AB glue. After curing, use 400#, 600#, 800#, 1000# metallographic sandpaper to polish the smooth working surface, then rinse with distilled water, degre...

Embodiment 2

[0022] According to the method and steps of Example 1, aluminum: 90%, zinc: 9.20%, the ratio of rare earth elements used is: Ga: 0.15%; In: 0.09%; Pb: 0.10%; Mn: 0.15%; Re: 0.30% .

[0023] The electrochemical capacity test data of the material prepared in embodiment 2:

[0024] sample

Embodiment 3

[0026] According to the method and steps of Example 1, but the external magnetic field used is a DC magnetic field.

[0027] The electrochemical capacity test data of the material prepared in embodiment 3:

[0028] sample

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for preparing a rare-earth aluminum alloy electrode material. Aluminum (CP level) with purity of more than or equal to 99.9 percent, serving as a raw material, is added with the following elements in percentage by mass: 0.05 to 49 percent of Zn, 0.05 to 0.15 percent of Ga, 0.05 to 0.20 percent of In, 0.01 to 0.10 percent of Pb, 0.05 to 0.30 percent of Mn, 0.05 to 0.30 percent of Sn and 0.20 to 0.50 percent of Re; and the mass content of impurities is less than or equal to 0.01 percent. According to the method, the rare-earth aluminum alloy electrode material is prepared by adopting doping of rare-earth elements, and the rare-earth aluminum alloy electrode material with excellent performance is obtained by solidification treatment of an external magnetic field so as to provide material support for practical application of an aluminum fuel cell. By the solidification treatment of the external magnetic field for the rare-earth aluminum alloy electrode material, the polarization performance of aluminum alloy electrodes can be improved, hydrogen evolution corrosion can be inhibited, the utilization rate of an anode is improved, and the working potential is increased.

Description

technical field [0001] The invention relates to a preparation method of a rare-earth aluminum alloy electrode material, and belongs to the technical field of preparation of aluminum alloy electrode materials for high-performance batteries. Background technique [0002] Aluminum has a high electrochemical equivalent of 2980A·h·kg -1 , the electrode potential is also relatively negative, up to -1.4V (vs.Hg / HgO) in alkaline medium. Therefore, metallic aluminum is an ideal electrode material. Because the corrosion rate of aluminum in the electrolyte is too fast, a large amount of hydrogen is produced, resulting in extremely low Faraday efficiency of the anode; at the same time, the oxide film covered on the surface of the aluminum increases the overpotential of the aluminum anode and reduces the voltage efficiency of the anode, so It is often necessary to add other elements for modification. Metal elements that can reduce the resistance of the oxide film, form a eutectic allo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C21/10
Inventor 唐有根卢周广彭志光刘洪涛鲁火清
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products