Issues with ion membrane cell coatings
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This post was last edited by sunjl1981 on 2013-1-6 at 20:00. The anode and cathode meshes in modern ion-exchange membrane electrolyzers are coated. I would like to ask fellow users: if the coating is damaged and comes off, how much might the voltage of the individual cell increase due solely to damage to the anode coating? How much of a voltage increase will be caused solely by the effect of the active cathode coating? # ， ， &
Failure of the cathode coating causes the cell voltage to rise rapidly by 100–150 mV; the main consequence is an increase in power consumption； If the anode coating fails, it will cause the cell voltage to rise rapidly in a short period of time, until the electrolyzer is ultimately forced to stop operating.
I feel that it is the peeling of the cathode coating that causes a greater increase in voltage; today’s high-electric-density cells rely on improvements to the cathode coating in order to maintain lower voltages
The poster is using an electrolyzer made by Beihua Machinery, right? I’ve only heard that cathode coating peeling off occurs with this type of electrolyzer
Beihua Machinery’s first batch of high-density tanks
When the cathode coating peels off, the cell voltage stops rising at 3.3~3.5V; in the case of the anode, no current can be supplied and the cell voltage becomes extremely high.