Factors affecting ion membrane resistance
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This post was last edited by sunjl1981 on 2013-1-6 at 23:36. In my opinion, the resistance of the ion exchange membrane is related to factors such as the membrane’s model, structure, area, and conditions of use (the degree of contamination and aging of the membrane). If all other conditions remain unchanged and only the current density is altered, will it affect the membrane resistance? # hcbbs
It is also related to the condition of the membrane, such as its degree of contamination, and so on
Strictly speaking, changing the current density affects resistance; membranes are different from metal conductors
Because as the current density changes, there is also a change in the flow rate of the saltwater. The concentration of saltwater on the surface of the membrane varies, and the gas-liquid ratio of the saltwater also changes slightly; all of these factors have an impact on the resistance of the membrane. I believe that the resistance inside the membrane changes at different flow rates; in simple terms, it is the change in the ratio of solid to liquid to gas that affects the resistance.
Factors that affect the resistance of the ion exchange membrane itself: 1. Membrane type; 2. Membrane structure; 3. Area; 4. Condition of use (degree of contamination and aging of the membrane). The following factors can indirectly affect the membrane resistance by changing the electric field strength: 1. Fluctuations in tank temperature; 2. Changes in saltwater concentration, which affect the resistance of the exchange layer; 3. Changes in alkali concentration, which also affect the resistance of the exchange layer; 4. Changes in the flow rate of saltwater, which affect the level of the electrolyte; 5. Changes in the flow rate of alkali, which likewise affect the level of the electrolyte; 6. Changes in gas pressure and pressure differences, which affect the gas-liquid ratio and the liquid level
5# sunjinfu, could you explain in detail the impact of anode and cathode concentrations, flow rates, temperature, and pressure differences on membrane resistance? Is it ultimately because of the changes in the above conditions that the gas adhesion rate on the membrane increases, thereby leading to an increase in membrane resistance? Thank you for the advice!