The role of polytetrafluoroethylene proton membrane
Did you know that the polytetrafluoroethylene proton membrane is the core component of the proton exchange membrane fuel cell? Let’s take a closer look at this material.
Proton exchange membrane (PEM) is the core component of proton exchange membrane fuel cells. It is a thin film with a thickness of only 50 to 180um, and its microstructure is very complex.
It provides a channel for proton transfer and serves as a separator to separate the fuel in the anode from the oxidant in the cathode. Its performance directly affects the performance and life of the battery.
It is very different from the diaphragm used in general chemical power supplies. It is not only a diaphragm material that isolates the cathode and anode reaction gases, but also the base of the electrolyte and electrode active material (electrocatalyst), that is, it has both a diaphragm and an electrolyte. role.
The polytetrafluoroethylene proton membrane is located in the center of the membrane electrode and is the core component of the proton exchange membrane fuel cell. It plays the role of separating fuel and oxidant, conducting protons and insulating electrons. The performance and life of the proton exchange membrane directly determine the battery performance and lifespan.
Because increasing the battery operating temperature can not only speed up the electrocatalytic oxidation of methanol, reduce the penetration of methanol, reduce poisoning of precious metal catalysts, and simplify water management.
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