Anode structure of electrolysis type ozone generator and its preparation method

Abstract

The invention provides an anode structure of a solid polymer electrolyte membrane composite electrode used in an electrolytic ozone generator and a preparation method of the anode structure. The anode structure adopts a dense, impermeable, and air-tight anode plate. In the space formed between the anode plate and the anode frame, there is a catalyst particle layer formed by laying freely. The periphery of the anode plate and the adjacent The gap between the inner surfaces of the anode frame can allow raw water and product gas to pass through, but is smaller than the minimum particle diameter of the catalyst particles. In the anode structure of the present invention, the gap between the anode plate and the anode frame and the gap between the catalyst particles are used as raw material water and product gas channels, so that the porous anode plate can be replaced by a dense anode plate, and the catalyst particles can be placed in a freely laid manner. As a result, the anode structure and preparation process are simplified, so that the working life of the anode structure and the efficiency of ozone production are improved.

Description

Technical field: [0001] The invention relates to an anode structure of a solid polymer electrolyte membrane composite electrode used in an electrolytic ozone generator, and to a preparation method of the anode structure. technical background: [0002] In order to use ozone, people have developed various forms of ozone generators. The electrolytic ozone generator using solid polymer electrolyte membrane composite electrodes is currently a more advanced one. The core part of this type of ozone generator is an electrolytic cell, and the electrolytic cell mainly includes an anode, a cathode, an electrolyte, and raw water. The said electrolyte is currently a solid polymer electrolyte, and this electrolyte membrane not only functions as an electrolyte, but also functions as a diaphragm separating the anode and the cathode. The anode and cathode located on both sides of the solid electrolyte membrane form a composite electrode with them, and the anode in this composite electrode is comp...

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Problems solved by technology

[0003] 1. Because the catalyst β-lead dioxide particles are bonded together by polytetrafluoroethylene when the membrane is made, the surface of the lead dioxide particles is attached to polytetrafluoroethylene, and polytetrafluoroethylene has no catalytic reaction function, which reduces the effective contact area of ​​β-lead dioxide particles, thereby reducing the reaction efficiency and ultimately leading to a decrease in the production rate of ozone

[0004] 2. Due to the high price of porous titanium itself, the cost of the anode plate made of it is also very high. In order to improve its corrosion resistance, complex surface treatment is required, which further increases the manufacture of ozone generators. cost

This structure increases the diameter of the gas and water channels on the anode side, which is conducive to improving the efficiency of ozone generation, but the production of small-pore corrosion-resistant metal mesh as a means of fixing the catalyst and its surface corrosion-resistant treatment are still complicated and expensive.

[0007] As far as the preparation method of the anode structure of the ozone generator is concerned, the prior art may not get rid of the complex process of making porous titanium plate (net) and its anti-corrosion treatment, and does not get rid of bonding, plating, and pressing the anode catalyst particles. and other processes, and the existing preparation methods cannot guarantee the high working life of the ozone generator anode structure

[0008] By the above citations to the prior art, it can be seen that the anode structure and preparation method of the ideal electrolytic ozone generator have not yet been found.

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