Preparation method for foam metal-based lead alloy composite anode material

A foam metal and composite anode technology, applied in metal material coating process, electrode, superimposed layer plating and other directions, can solve problems such as poor compactness of lead dioxide or pure lead, generation of metal ion sewage, unusability, etc. Excellent oxygen evolution activity and stability, energy saving, light weight effect

Active Publication Date: 2018-11-09
KUNMING HENDERA SCI & TECH +1
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  • Description
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Problems solved by technology

This preparation method also adopts the traditional electroplating composite method, which will produce metal ion sewage, and the lead dioxide or pure lead composite electroplated on the surface of the titanium substrate has poor compactness and cannot be used in the hydrometallurgical industry.

Method used

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  • Preparation method for foam metal-based lead alloy composite anode material

Examples

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Embodiment 1

[0020] A method for preparing a foamed metal-based lead alloy composite anode material, the method steps are as follows:

[0021] (1) First put the aluminum foam with a porosity of 95%, an average main pore diameter of 0.5 mm, and a thickness of 1 mm on a ZXA045 full-automatic high-speed brush polishing machine, and polish it for 3 minutes to remove the oxide film on the surface of the aluminum foam. Rinse the surface of the foamed aluminum with a 10MPa high-pressure airflow in the dust box. After the substrate is cleaned, place it in a ZCK-1400 vacuum magnetron sputtering coating equipment, and sputter and coat tin-bismuth with a thickness of 0.2 μm on the surface of the foamed aluminum. Alloy layer;

[0022] (2) Under the protection of an argon atmosphere, put the Pb-0.2%Ag alloy into a vacuum microgravity melting furnace, and the furnace temperature is controlled at 350°C. After the Pb-0.2%Ag alloy is completely melted, weigh the SnO 2 Added to Pb-0.2%Ag alloy melt, in wh...

Embodiment 2

[0025] A method for preparing a foamed metal-based lead alloy composite anode material, the method steps are as follows:

[0026] (1) Put the foamed copper or foamed titanium with a porosity of 75%, an average main pore diameter of 1.0 mm, and a thickness of 5 mm on a ZXA045 automatic high-speed brush polishing machine, and polish it for 5 minutes to remove the oxide film on the surface of the foamed copper. Rinse the foamed copper surface with 10MPa high-pressure airflow in the dust collection box. After the substrate is cleaned, place it in the ZCK-1400 vacuum magnetron sputtering coating equipment. 1 μm tin-bismuth alloy layer;

[0027] (2) Under the protection of an argon atmosphere, put the Pb-0.2%Ag alloy into a vacuum microgravity melting furnace, and the furnace temperature is controlled at 400°C. After the Pb-0.2%Ag alloy is completely melted, weigh the RuO 2 Added to the lead alloy melt, where RuO 2 Occupying 0.05% of the mass of Pb-0.2%Ag alloy, control the furna...

Embodiment 3

[0030] A method for preparing a foamed metal-based lead alloy composite anode material, the method steps are as follows:

[0031](1) First put the foamed nickel with a porosity of 85%, an average main pore diameter of 0.8mm, and a thickness of 3mm on a ZXA045 full-automatic high-speed brush polishing machine, and polish it for 5 minutes to remove the oxide film on the surface of the foamed nickel. Rinse the foamed copper surface with a 10MPa high-pressure airflow in the box, and after the substrate is cleaned, place it in a ZCK-1400 vacuum magnetron sputtering coating equipment, and sputter and plate a tin-bismuth alloy layer with a thickness of 3 μm on the foamed nickel surface ;

[0032] (2) Under the protection of an argon atmosphere, put the Pb-0.2%Ag alloy into a vacuum microgravity melting furnace, and the furnace temperature is controlled at 450°C. After the Pb-0.2%Ag alloy is completely melted, weigh the γ-MnO 2 or β-MnO 2 Added to lead alloy melt, in which γ-MnO 2...

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Abstract

The invention provides a preparation method of a foam metal-based lead alloy composite anode material. The preparation method comprises the following steps: treating the surface of a foam metal substrate and forming a tin-bismuth alloy layer on the surface of the foam metal substrate; then preparing a nano-oxide composite lead alloy; and then cladding the nano-oxide composite lead alloy onto the foam metal substrate with the tin-bismuth alloy layer on the surface by using a bimetal continuous extrusion cladding machine so as to prepare the foam metal-based lead alloy composite anode material for high-efficiency electrocatalytic oxygen evolution. The foam metal-based lead alloy composite anode material prepared by the invention gives full play to the high-efficiency electrocatalytic oxygenevolution activity of the nano-oxide composite lead alloy and the advantages of the foam metal substrate, and has the characteristics of light weight, good conductivity, high-efficiency electrocatalytic oxygen evolution performance, high corrosion resistance and the like, and can reduce resource consumption and save energy.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy electrode materials. Background technique [0002] The anode materials in the hydrometallurgy industry are mainly lead and lead alloys. The lead-based anode materials produced by the existing technology have problems such as low mechanical strength, heavy weight, low electrical conductivity, and poor electrocatalytic activity. Then, In the process of hydrometallurgy, problems such as high tank voltage, low current efficiency, and high energy consumption of electrowinning are caused. [0003] At present, there are many patents published on the preparation method of foamed metal matrix composites, but the electroplating composite method is used in the production process. This method is easy to generate a large amount of metal ion sewage, and it needs to continue to invest in higher treatment costs in the later stage. Such as the Chinese patent CN1062084C "the manufacture method of lead-acid...

Claims

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Application Information

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IPC IPC(8): C25B11/03C25B11/04C25C7/02C23C28/02
CPCC23C28/021C25C7/02C25B11/031C25B11/051C25B11/091
Inventor 郭忠诚黄惠潘明熙符德正陈步明董劲冷和
Owner KUNMING HENDERA SCI & TECH
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