Fuel cell is a new type of energy conversion device that directly converts chemical energy into electrical energy. It has the advantages of high energy density, low environmental pollution and high efficiency. In fuel cells, the proton exchange membrane (Proton Exchange Membrane, PEM) is an important component. It is located between the electrode catalysts and is responsible for regulating the speed of ions passing through the membrane, thus affecting the electrochemical performance of the battery. Among many proton exchange membranes, polytetrafluoroethylene (PTFE) proton membranes are widely used in fuel cells because of their excellent chemical stability, good thermal stability and high mechanical strength.
In a fuel cell, the two electrodes are usually made of porous materials, such as activated carbon, metals or alloys. During actual operation, these electrodes will gradually corrode and oxidize, resulting in reduced battery performance. To solve this problem, scientists added a layer of ptfe proton membrane to these electrodes.
ptfe proton membraneThe main function is to realize the separation and transmission of charges. When fuel and oxygen react through the electrodes to produce electrons and ions, protons can move freely through the gaps between the semipermeable polymer substrate and the electrodes. However, the electrons will be fixed on the substrate and cannot pass through. In this way, a potential difference is formed between the electrodes, which is the so-called electric field. This electric field pushes the protons toward the cathode, creating an electric current. At the same time, it also pushes electrons toward the anode, driving the load in the circuit.
In fuel cells, catalysts are one of the key factors that determine battery performance. However, many catalysts work at high temperatures, which requires them to have good thermal and chemical stability. ptfe proton membrane can provide a protective layer to prevent the catalyst from direct contact with the electrolyte solution, thereby avoiding dissolution and contamination of the catalyst.
In addition, the ptfe proton membrane can also provide a stable interface so that the catalyst can evenly diffuse into the electrolyte solution. This not only improves catalyst utilization, but also improves battery stability and lifespan. Interested parties can enter the store and contact us.
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