Do we need any pretreatment of proton exchange membrane before using it. if yes then what is the procedure? and please give information about if the water pass through proton exchange membrane as when we are keeping the water level higher in one side of the membrane after some time the level in both side of the membrane becomes equal.
So my question or doubt is that if some product will be formed on either side, will it not allow to pass through it. and how is it able to exchange only proton ? although it is exchanging the water through it.
Yes, Nafion 117, which is a type of proton exchange membrane (PEM), does allow water to pass through it. Nafion is a widely used perfluorosulfonic acid-based polymer that exhibits unique properties, making it an excellent material for PEM applications.
Nafion is known for its proton-conducting capabilities, which make it suitable for use as a membrane in fuel cells, electrolyzers, and other electrochemical devices. It allows protons (H+ ions) to pass through it while blocking the flow of electrons, which is essential for efficient proton exchange and the functioning of these devices.
Apart from its proton conductivity, Nafion also has high water permeability. This property is crucial in applications where the PEM needs to stay hydrated to maintain its proton conductivity. In PEM fuel cells, for example, it is necessary to keep the membrane hydrated for optimal performance.
The water transport properties of Nafion are essential for the efficient functioning of PEM-based systems. The ability of Nafion to allow water transport while selectively conducting protons has contributed to its widespread use in various electrochemical applications.
but if water can pass through it then it is obvious that product formed can also pass through it if we are doing any redox reaction.
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