Titanium electrode is used to produce hydrogen by electrolysis
Electrolysis hydrogen production industry has a long history, electrolytic cell generally adopts pressure filter type repole structure, or box type monopole structure.
Electrolysis of water involves running a direct current through the water to produce hydrogen and oxygen. Fuel cells use hydrogen as fuel. In order to optimize the environment and reduce pollution, the future car energy will use hydrogen. Electrolysis is the only industrial way to produce hydrogen from water.
Electrolysis, oxygen is precipitated on the cathode and at the same time on the anode. The reaction equation is as follows:
H2O -- H2+(1/2)O2
In the voltage of electrolytic cell, anode overpotential and cathode overpotential account for a large proportion. The overpotential has much to do with the electrode material used.
Electrolysis cell is basically composed of anode, cathode, electrolyte and diaphragm. Through the combination of electrode material and electrolyte, the voltage loss varies greatly.
In general water electrolyzer, the electrolyte uses 20-30%KOH or NaOH solution, operating temperature is 50-70 degrees. Nickel-plated steel for the insoluble anode and carbon steel for the cathode. Various surface treatments were considered to reduce hydrogen overpotential. Sulfur-containing nickel electroplating is widely used in Japan. Adding NaCNS to common aqueous solution can produce sulfur-containing black-gray nickel plating. Compared with carbon steel, its hydrogen overpotential is 250-300mv lower. Compared with nickel plated steel plate, oxygen overpotential is also about 100mv lower.
Japan has developed a solid polymer hydroelectrolysis process, which can be used as a solid electrolyte for proton conductors using fluorinated resin ion exchange membrane. Due to the thin film of solid polymer electrolyte, the electrolyte resistance becomes smaller, which is conducive to electrolytic operation under high current density.
Such as the use of solid oxide electrolyte, it is possible to apply the use of water steam high temperature water electrolysis process, this process theory decomposition voltage is small, electric energy must be small, especially as the electrolytic reaction resistance of the overpotential becomes smaller, so can be expected to become the highest efficiency, with the lowest tank voltage electrolytic operation of the electrolysis method.
For alkaline hydroelectrolysis, nickel-plated steel for the electrode, nickel of the same shape, or nickel-plated mild carbon steel for the cathode. As a new cathode material, porous nickel electrode with large surface area should be used.
Solid polymer hydroelectrolysis, due to the use of strong acid electrolyte, electrode materials are required to resist acid corrosion, so can not use nickel, iron and other cheap materials, to use expensive platinum group metal materials.
Platinum-iridium coated titanium electrode, the water supply of standard models reaches 1000 (L/h), economic and practical, with advanced technology, mature technology, reliable quality, reasonable price to win the majority of customers love. The product can be customized according to the actual needs of customers.
Platinum is a silver-white shiny metal, melting point 1772℃, boiling point 3827 ±100℃, density 21.45 g/cm 3 (20℃), soft, has good ductility, thermal and electrical conductivity. Sponge platinum is a gray spongy substance, has a large specific surface area, has a strong ability to absorb gases (especially hydrogen, oxygen and carbon monoxide). Platinum black in powder form can absorb a lot of hydrogen. The chemical properties of platinum are not active, stable in the air and humid environment, below 450℃ heating, the surface of the formation of platinum dioxide film, can react with sulfur, phosphorus, halogen at high temperature. Platinum is insoluble in hydrochloric acid, sulfuric acid, nitric acid and alkali solutions, but soluble in aqua regia and molten alkali. The oxidation states of platinum are +2, +3, +4, +5, +6. It is easy to form coordination compounds such as [Pt (NH3) 2] Cl2, K [Pt (NH3) Cl5]. Platinum and its alloys are resistant to oxidation and corrosion at high temperature, and are used to make crucible, evaporating dish, electrode, nozzle, reactor, etc. Platinum and platinum rhodium alloys are used as furnace wires and thermocouples for high temperature furnaces in the metallurgical, glass and ceramic industries. Platinum is also used in jewelry.
Baoji JM-TITANIUM—Professional anode design and manufacturer
Over the years, we have been specialized in anode research and development, production and manufacturing, and our products are exported to many countries around the world. Various series of anodes can be designed and produced according to the actual environmental parameters of different users. You are welcome to visit and negotiate.
Nicole
Company: Baoji Jimiyun Dynamic Co., Ltd
Cuntry:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
Cel:+86 13369210920
Website:www.jm-titanium.com
