Composite anode material, preparation method of composite anode material, anode plate and preparation method of anode plate

A composite anode and anode technology, applied in the field of electrochemistry, can solve the problems of short life, reduced cathode product yield, and porous deposition layer.

A composite anode and anode technology, applied in the field of electrochemistry, can solve the problems of short life, reduced cathode product yield, and porous deposition layer.

CN107604388AActive Publication Date: 2018-01-19KUNMING HENDERA SCI & TECH +2
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  • Composite anode material, preparation method of composite anode material, anode plate and preparation method of anode plate
  • Composite anode material, preparation method of composite anode material, anode plate and preparation method of anode plate
  • Composite anode material, preparation method of composite anode material, anode plate and preparation method of anode plate

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preparation example Construction

[0060] The present invention also provides a method for preparing the above-mentioned composite anode material, comprising: forming a metal layer outside the metal rod core; forming a conductive ceramic layer outside the metal layer by anode composite electrodeposition, and the conductive ceramic layer contains β- PbO 2 -A1 2 o 3 Composite oxide; an active ceramic layer is formed outside said conductive ceramic layer by anodic composite electrodeposition, said active ceramic layer comprising γ-MnO 2 -Ti 4 o 7 composite oxides.

[0061] Among them, the present invention has no special limitation on the sources of all raw materials, which can be commercially available.

[0062] According to the invention, said metal rod core is preferably formed by drawing extrusion techniques. The metal rod core is the same as described above, and will not be repeated here. The metal rod core formed by drawing and extrusion technology has a high degree of refinement of the aluminum alloy...

Embodiment 1

[0102] 1.1 Prepare a rectangular aluminum wire with a cross-section (the long axis of the cross-section is 10mm and the wide axis is 7mm) by drawing and extrusion process, and the surface is drawn with a corrugated pattern, and then the surface is sprayed with 300-mesh corundum , then placed in a mass ratio of 10% sodium hydroxide and soaked for 10 minutes, washed with water, and then placed in a mass ratio of 20% HNO 3 After 0.5min of immersion in the medium, wash with water, place the rod core after cleaning in sulfuric acid and carry out anodic oxidation treatment, obtain oxide film layer, wherein, anodic oxidation solution formula and process parameter comprise: 120g / L sulfuric acid (H 2 SO 4 ), 10g / L oxalic acid (H 2 C 2 o 4 ), 1g / L aluminum ion, 0.3g / L gelatin, the current density of the anode is 1A / dm 2 , the tank voltage is 18V, the temperature is 20°C, and the time is 40min; then the rod core after anodizing is placed in HC1 with a mass ratio of 20% and soaked for...

Embodiment 2

[0115] 2.1 The aluminum wire with a circular cross section (section diameter of 10mm) is prepared by drawing and extrusion process, and its surface is drawn with a corrugated pattern, and then its surface is sprayed with corundum with a particle size of 50 mesh, and then placed in a Soak in 10% sodium hydroxide for 10 minutes, wash with water, and place in 20% HNO 3 After 0.5min of immersion in the medium, wash with water, place the rod core after cleaning in sulfuric acid and carry out anodic oxidation treatment, obtain oxide film layer, wherein, anodic oxidation solution formula and process parameter comprise: 140g / L sulfuric acid (H 2 SO 4 ), 5g / L oxalic acid (H 2 C 2 o 4 ), 1g / L aluminum ion, 0.3g / L gelatin, the current density of the anode is 1A / dm 2, the tank voltage is 18V, the temperature is 20°C, and the time is 40min; then the rod core after anodizing is placed in HC1 with a mass ratio of 20% and soaked for 20min, washed with water, and then placed in silver salt...

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Abstract

The invention provides a composite anode material. The composite anode material comprises a metal bar core, a metal layer, a conductive ceramic layer and an activate ceramic layer, wherein the metal bar core is coated with the metal layer, and the metal layer adopts lead or a lead alloy; the metal layer is coated with the conductive ceramic layer, and the conductive ceramic layer comprises beta-PbO2-Al2O3 composite oxide; and the conductive ceramic layer is coated with the activate ceramic layer, and the activate ceramic layer comprises gamma-MnO2-Ti4O7 composite oxide. Compared with the priorart, according to the composite anode material, the outermost layer of the anode composite material comprises the gamma-MnO2-Ti4O7 composite oxide, wherein the gamma-MnO2 has the low oxygen evolutionpotential, the catalytic activity and corrosion resistance of an electrode can be further improved due to doped titanium, and meanwhile the intermediate conductive ceramic layer beta-PbO2-Al2O3 composite oxide has the good corrosion resistance and conductivity, so that the service life of the anode composite is longer, and the lower cell voltage is provided.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a composite anode material and a preparation method thereof, an anode plate and a preparation method thereof. Background technique [0002] In the process of extracting zinc, copper, nickel, cobalt, manganese, chromium and other metals by hydrometallurgy, lead and lead alloys are still used as anode materials. The disadvantages are: high cell voltage (3.4-3.8V) and low current efficiency (75 ~ 88%), high energy consumption in the electrowinning process (3400 ~ 4200 degrees / ton of zinc), short service life of the anode (0.5 ~ 1 year), the anode lead is easily dissolved and enters the cathode product, resulting in a decline in the quality of the cathode product. In order to reduce the energy consumption of zinc, copper, nickel, cobalt, manganese, chromium and other electrolytic deposition and prevent the pollution of cathode products by anode lead. In-depth ...

Claims

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Application Information

Patent Timeline
19 Jan 2018
Publication
CN107604388A
IPC
C25C7/02; B32B15/04; B32B15/20; B32B18/00
CPC
C25C7/02; B21C23/22; C25D9/06; Y02E60/10
Inventors
郭忠诚; 黄惠