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Titanium-based TiNx/IrO2-Ta2O5 nanometer coating anode

A iro2-ta2o5, nano-coating technology, applied in the coating, metal material coating process, electrodes, etc., can solve the problems of low service life, harsh anode requirements, easy dissolution or passivation of anode materials, etc. Effects of prolongation, improvement of electrocatalytic activity and lifetime, and low preparation cost

Inactive Publication Date: 2015-10-07
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology

With the rapid development of industrial applications, the initial Ti / TiO 2 -RuO 2 The anode is no longer competent for the oxygen evolution reaction with a high overpotential, and the anode material itself is prone to dissolution or passivation under high working potential, and the service life is low, so the requirements for the anode are more stringent in the oxygen evolution environment

Method used

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  • Titanium-based TiNx/IrO2-Ta2O5 nanometer coating anode
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  • Titanium-based TiNx/IrO2-Ta2O5 nanometer coating anode

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Embodiment

[0034] The titanium base TiNx / IrO provided by this embodiment 2 -Ta 2 o 5 Nanocoated anode consisting of a Ti base on the inside, a TiNx interlayer in the middle, and IrO on the outside 2 -Ta 2 o 5 nano coating;

[0035] The TiNx intermediate layer is prepared by subjecting the titanium base to ion nitriding treatment;

[0036] The IrO 2 -Ta 2 o 5 The nano-coating is prepared by the sol-gel method;

[0037] The base body adopts TA2 titanium.

[0038] The titanium-based TiNx / IrO 2 -Ta 2 o 5 Nano-coated anode, the molar ratio of Ir to Ta is 7:6, IrO 2 -Ta 2 o 5 Nanocoating consists of 10 layers.

[0039] The titanium-based TiNx / IrO 2 -Ta 2 o 5 Nano-coated anode, the thickness of the TiNx intermediate layer is not less than 200μm.

[0040] The titanium-based TiNx / IrO 2 -Ta 2 o 5 The preparation method of nano-coating anode specifically comprises the following steps:

[0041] (1) Substrate treatment, the titanium substrate is subjected to sandblasting treat...

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Abstract

The present invention belongs to the technical field of insoluble anode preparation in the electrochemical industry, and particularly to a titanium-based TiNx / IrO2-Ta2O5 nanometer coating anode. The anode comprises a titanium base positioned inside, a TiNx middle layer positioned in the middle, and a IrO2-Ta2O5 nanometer coating positioned outside, wherein the titanium base is subjected to ion nitriding treatment to prepare the TiNx middle layer, the IrO2-Ta2O5 nanometer coating is prepared through a sol-gel method, the thickness of the TiNx middle layer in the anode can achieve more than or equal to 200 [mu]m, and the TiNx middle layer has characteristics of excellent electrical conductivity, excellent thermal conductivity and excellent corrosion resistance, and can firmly and reliably bonded with the IrO2-Ta2O5 nanometer coating. According to the present invention, the detection results show that the electro-catalytic activity and the service lift of the anode are significantly improved, especially the electrode service life even can be prolonged by more than or equal to twice, and good promotion application values are provided.

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 / IrO 2 -Ta 2 o 5 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 electro...

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Application Information

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IPC IPC(8): C25B11/06C25C7/02C23C8/36C23C22/02C23C22/82
Inventor 闫镇威冯在强谭兆钧
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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