Traditional methods of proton exchange membrane

This is equivalent to the reverse reaction of electrolytic water. As the name implies, the proton exchange membrane can only conduct protons, so protons can directly pass through the proton exchange membrane to reach the cathode, while electrons can only reach the cathode through the external circuit. ?

When electrons flow to the cathode through an external circuit, direct current is generated. But according to the chemical formula, this process did not cause energy loss. First of all, it is necessary to understand that the function of ion exchange membrane is to prevent some ions from passing through and the other ions can pass through. If it is not used, the obtained product is impure and contains sodium chloride. Its function is to prevent chloride ions from passing through, so that sodium ions can reach the cathode and form sodium hydroxide with hydroxyl groups.

Proton exchange membrane is mainly fluorosulfonic acid proton exchange membrane; Nafion recast membrane; Fluorine-free polymer proton exchange membrane; New composite proton exchange membrane, etc.

Extended data:

Proton exchange membrane fuel cell (PEMFC) has the advantages of low working temperature, fast start-up, high specific power, simple structure and convenient operation, and is recognized as the preferred energy source for electric vehicles and fixed power stations.

Inside the fuel cell, the proton exchange membrane provides a channel for the migration and transportation of protons, so that protons can reach the cathode from the anode through the membrane, and form a loop with the electron transfer of the external circuit to provide current to the outside world. Therefore, the performance of proton exchange membrane plays a very important role in the performance of fuel cells, and its quality directly affects the service life of the cells.

Organic/inorganic nano-composite proton exchange membrane can improve the water retention capacity of the composite membrane by relying on the characteristics of small size and large specific surface area of nanoparticles, thus expanding the working temperature range of proton exchange membrane fuel cells.

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