A titanium-based tin x /iro 2 -ta 2 o 5 coated anode

An iro2-ta2o5 coating technology, which is applied in the coating, metal material coating process, electrodes, etc., can solve the problems of easy dissolution or passivation of anode materials, harsh anode requirements, and low service life, and achieve enhanced electrical Effects of chemical reactivity, prolonging anode life, and improving stability

Inactive Publication Date: 2017-08-01
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Abstract
  • Description
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  • Application Information

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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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  • A titanium-based tin <sub>x</sub> /iro <sub>2</sub> -ta <sub>2</sub> o <sub>5</sub> coated anode
  • A titanium-based tin <sub>x</sub> /iro <sub>2</sub> -ta <sub>2</sub> o <sub>5</sub> coated anode
  • A titanium-based tin <sub>x</sub> /iro <sub>2</sub> -ta <sub>2</sub> o <sub>5</sub> coated anode

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Embodiment

[0032] The titanium base TiNx / IrO provided by this embodiment 2 -Ta 2 o 5 Coated 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 coating;

[0033] The TiNx intermediate layer is prepared by subjecting the titanium base to ion nitriding treatment;

[0034] The IrO 2 -Ta 2 o 5 The coating is prepared by thermal decomposition method;

[0035] The base body adopts TA2 titanium.

[0036] The titanium-based TiNx / IrO 2 -Ta 2 o 5 Coated anode, the molar ratio of Ir to Ta is 7:6, IrO 2 -Ta 2 o 5 The coating consists of 10 layers.

[0037] The titanium-based TiNx / IrO 2 -Ta 2 o 5 Coated anode, the thickness of TiNx intermediate layer is 50~200μm.

[0038] The titanium-based TiNx / IrO 2 -Ta 2 o 5 The preparation method of coating anode specifically comprises the following steps:

[0039] (1) Substrate treatment, the titanium substrate is subjected to sandblasting treatment, specifically, 40-100 mesh...

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Abstract

The invention belongs to the technical field of preparation of an insoluble anode in electrochemical industry, and particularly relates to a titanium-based TiNx / IrO2-Ta2O5 coating anode. The titanium-based TiNx / IrO2-Ta2O5 coating anode comprises a titanium base, a TiNx middle layer and an IrO2-Ta2O5 coating, wherein the titanium base is positioned on the inside of the anode, the TiNx middle layer is positioned in the middle of the anode, and the IrO2-Ta2O5 coating is positioned on the outside of the anode; the TiNx middle layer is prepared by carrying out ion nitriding treatment on the titanium base; and the IrO2-Ta2O5 coating is prepared through a thermal decomposition. The titanium-based TiNx / IrO2-Ta2O5 coating anode provided by the invention can achieve the thickness of the TiNx middle layer at 50-200 micrometers and has the advantages of excellent electricity-conducting property and heat-conducting property and corrosion resistance; compared with an anode which is not subjected to nitrizing treatment, the titanium-based TiNx / IrO2-Ta2O5 coating anode provided by the invention achieves more fine surface crack of the IrO2-Ta2O5 coating and no penetrable crack, has larger reaction surface area, can provide more electrochemical reaction places and can be used for effectively enhancing the stability of the anode and prolonging the service life of the anode.

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 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 electrocatal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/10C23C28/00C23C18/12C23C8/36
Inventor 闫镇威张占哲原现杰
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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