Porous titanium-based carbon nanotube reinforced amorphous metal oxide coating electrode and preparation method thereof

Abstract

The invention relates to a porous titanium-based carbon nanotube reinforced amorphous metal oxide coating electrode and a preparation method thereof, and belongs to the technical field of anode plates. The porous titanium-based carbon nanotube reinforced amorphous metal oxide coating electrode comprises a porous titanium substrate, a conductive metal oxidation middle layer and an amorphous metal active layer which are sequentially arranged from inside to outside, and the conductive metal oxidation middle layer is a Sn-Ru-Ti-TaOx layer prepared through thermal decomposition, the amorphous metal active layer is a carbon nano tube reinforced Mn-Mo-Ni-ZrOx oxide layer which is obtained through pulse electrodeposition and thermal oxidation treatment. The electrode provided by the invention has the characteristics of low precious metal consumption, high electrocatalytic activity, good conductivity, strong anodic oxidation resistance, long service life, low production cost and the like.

Description

technical field [0001] The invention relates to a porous titanium-based carbon nanotube reinforced amorphous metal oxide coating electrode and a preparation method thereof, belonging to the technical field of electrodes. Background technique [0002] In the process of producing high-purity metal products by hydrometallurgy, more than 95% of the power consumption is concentrated on the electrolytic cell. The unit power consumption depends on the current efficiency and the cell voltage. To save electricity, the cell voltage needs to be reduced while the current efficiency is increased. However, the current efficiency is affected by factors such as process conditions and mineral sources, making it difficult to further improve; therefore, reducing the cell voltage is the main direction of reducing power consumption. The cell voltage is related to the oxygen evolution overpotential of the anode material. Lead-silver alloy is used as the anode in the traditional industry. The ano...

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Problems solved by technology

[0005] Aiming at the problems of existing titanium-based oxide coating anodes, the present invention proposes a porous titanium-based carbon nanotube-reinforced amorphous metal oxide coating electrode and a preparation method thereof. The electrode has electrocatalytic activity and is resistant to electrochemical corrosion The oxide is a binder that is resistant to electrochemical corrosion and can form a solid solution with the oxide with electrocatalytic activity. The solid solution of the oxide and the titanium matrix have a strong bonding force; the use of composite carbon nanotubes to enhance the electrode conductivity, Large specific surface area and good strength, elasticity and fatigue resistance, amorphous metal oxide coated carbon nanotubes strengthen the Mn-Mo-Ni-ZrOx oxide layer, in the random arrangement of atoms, its long-range disorder, but Entities with irregular intervals and short-range order, its internal structural characteristics of long-range disorder and short-range order make the carbon nanotube-reinforced Mn-Mo-Ni-ZrOx oxide layer have both macroscopic conductivity and surface active sites, greatly improving the Improve the electrocatalytic performance of the electrode and achieve high-efficiency catalysis. Compared with the crystalline structure, the carbon nanotube-enhanced amorphous Mn-Mo-Ni-ZrOx oxide layer has lower internal energy and viscosity coefficient, and has a larger interatomic Strong force and specific surface area, strong corrosion resistance and stable chemical properties

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