IrO2 nano-coating anode with TiN nanotube intermediate layer

Abstract

The invention belongs to the technical field of electrochemical anode manufacturing, relates to preparation of a titanium-based insoluble anode, and particularly relates to an IrO2 nano-coating anodewith a TiN nanotube intermediate layer. The anode material takes Ti as a matrix, an IrO2 nano coating is prepared on the surface, and meanwhile, a TiN nanotube intermediate layer is prepared between the IrO2 nano coating and the Ti matrix. The anode product provided by the invention has the characteristics of large specific surface area, excellent electrical conductivity, thermal conductivity, corrosion resistance and the like, and the TiN nanotube intermediate layer is firmly combined with the IrO2 coating and the titanium matrix. The IrO2 coating of the prepared anode has obvious IrO2 grains, the grain size is 10-100nm, the reaction surface area is larger, and more electrochemical reaction places can be provided. The determination result of the electrocatalytic activity and the service life shows that the IrO2 nano-coating anode is superior to a common titanium-based IrO2 coating anode.

Description

technical field [0001] This application belongs to the technical field of electrochemical anode manufacturing, and relates to the preparation of a titanium-based insoluble anode, and further specifically relates to an IrO2 with a TiN nanotube intermediate layer. 2 Nano-coated anode. Background technique [0002] As a solid heterogeneous catalyst, anode materials are widely used in electrochemical applications such as new energy batteries, supercapacitors, electroplating, chlor-alkali industry, corrosion protection, and electrolytic oxidation wastewater treatment. However, with the rapid development of industry, as well as many factors such as the improvement of material performance requirements and environmental protection requirements, the anode materials in traditional electrochemical applications such as lead alloy anodes and graphite anodes have been difficult to meet the high overpotential and high Performance requirements such as electrocatalytic activity, high stabil...

AI Technical Summary

Problems solved by technology

However, if the potential is too high, the electrolyte will contact the substrate through the microcracks in the coating, and the surface of the Ti substrate will be easily oxidized to form poorly conductive and loose TiO. 2 layer, further causing the cell voltage to rise sharply within a few hours and causing the coating to peel off

This also leads to more stringent requirements for anode materials in an oxygen evolution environment with a higher overpotential

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