A titanium-based tinx/tio2-ruo2 nano-coated anode

Abstract

The invention belongs to the technical field of insoluble anode preparation in the electrochemical industry, and in particular relates to a titanium-based TiNx / TiO2-RuO2 nano-coated anode. The anode includes a titanium base located inside, a TiNx intermediate layer located in the middle, and a TiO2-RuO2 nano-coating located outside; the TiNx intermediate layer is made by ion nitriding the titanium base; the TiO2-RuO2 nano-coated The layers were prepared by the sol-gel method. The thickness of the TiNx intermediate layer in the anode provided by the present invention can reach 50-200 μm; the TiO2-RuO2 nano-coating includes a multi-layer structure, the crystal grain size is small and evenly arranged, and presents a better nano-array, which can greatly increase the thickness of the anode. The active surface area improves the electrocatalytic activity of the anode. Compared with the prior art, its electrocatalytic activity and service life are significantly improved, and it has a good value for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of insoluble anode preparation in the electrochemical industry, and specifically relates to a titanium-based TiNx / TiO 2 -RuO 2 Nano-coated anode. Background technique [0002] The anode is a key component in the electrochemical industry, generally divided into soluble anodes and insoluble anodes. Among them, the earliest applications of soluble anodes are graphite anodes and lead anodes. The anode can be divided into a chlorine analysis anode and an oxygen analysis anode according to the different gases released. The graphite anode belongs to the chlorine evolution anode, and the lead alloy anode belongs to the oxygen evolution anode. [0003] With the continuous development of industry and science and technology, traditional anode materials are increasingly showing their limitations. For example, the corrosion resistance of graphite anode is not very ideal, and the strength is not high; the electrocata...

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Problems solved by technology

[0005] However, at a high overpotential, the electrolyte contacts the substrate through the microcracks in the coating, so the surface of the Ti substrate is easily oxidized to form poorly conductive and loose TiO 2 layer, causing the cell voltage to rise sharply within a few hours and cause the coating to peel off, especially in an oxygen evolution environment with a high overpotential, the requirements for the anode are more stringent

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