What is the development of alkaline electrolyzers in China

Release time:

2022-08-18


  The distance between the cathode and anode of alkaline electrolyzers in China is one of the important factors affecting the cell voltage. As the electrode spacing increases, the ohmic voltage drop in the slot increases, and the slot voltage increases. Especially when working with high current, this voltage loss is more serious. Modern electrolytic cells use various measures to reduce the pole spacing, such as the use of diffusion anodes and modified diaphragms to make zero pole spacing electrolytic cell structures.

alkaline electrolyzer

  The electrodes in China's alkaline electrolytic cells are more compact in vertical installation, the conductive plates are easy to connect, and it is beneficial to reduce the bubble effect. Because gas bubbles are often attached to the surface of the electrode with gas evolution, the working surface area of ​​the electrode will be reduced. In addition, the solution near the electrode will also be filled with bubbles, increasing the resistance of the solution, a phenomenon called "bubble effect".

  Materials for alkaline electrolyzers in China can be steel, cement, ceramics, etc. Steel is alkali resistant and is the most widely used. For highly corrosive electrolytes, the inside of the steel tank is lined with lead, synthetic resin or rubber.

  At present, alkaline electrolyzers in China are developing in the direction of large capacity and low energy consumption. The bipolar electrolyzer is suitable for large-scale production, and has been used in the electrolyzed water and chlor-alkali industries successively.

  Water electrolysis hydrogen production Chinese alkaline electrolytic cells mostly use iron as the cathode side and nickel as the anode side of the series electrolyzer (like a filter press) to electrolyze the aqueous solution of caustic potash or caustic soda.

alkaline electrolyzers in China