What effect does high current density have on the ion membrane?
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The Asahi Kasei NCZ battery cell and F6801 ion membrane used in our factory are currently being replaced. However, the production task of the company is very high. If one cell is replaced every month, the current of other cells must be increased. I would like to ask what impact does the density of large appliances exceeding 5.5 have on the new ion membrane?
The designed current density of NCZ is about 5.5, which means that the counter electrode and membrane are large at this current density. However, attention should be paid to the quality of the secondary brine. It is best for calcium and magnesium not to exceed 10ppm, otherwise the service life of the membrane will be reduced.
The new membrane needs to be operated below 80 degrees for 48 hours.: Gasket creep, further solidification of glue, adaptation between cells ； The ion membrane dissolves the sacrificial core material and opens ion channels. The plasma channel is fully opened to increase the current again. Otherwise, the local current density will be too large, the conduction will be insufficient, and the film will be damaged.
The current density designed by NCZ is about 5.5, which means that the counter electrode and membrane are large at this current density. ------Can you express the red words in detail?
At 5.5, it has little impact on the use of electrodes and membranes. Because the electrolyte circulation of the original tank has been improved.
In fact, the allowed high and low current density operation is mainly reflected in the design of the electrolyzer, because during operation, there is a high concentration and a low concentration on both sides of the ion membrane, the catholyte is high concentration and the anolyte is low concentration! As the current density increases, the speed of ion diffusion in the solution does not change, so the concentration difference will become more and more obvious. Whether the circulation of the electrolytic cell can overcome the polarization phenomenon of this solution is a key, especially the current natural circulation. Of course, this also includes temperature control.
5.5 is fine, within the design range, but the power consumption is a bit high.
You can contact the supplier of the ion membrane and they will give professional and detailed answers.