The Porous Titanium Plate In PEMFC

In a proton exchange membrane fuel cell, the main function of the gas diffusion layer is to support the catalyst and provide a channel for the gas participating in the reaction and the water generated. It is one of the key components of the membrane electrode. The porous titanium plate has a good and uniform large number of pores, the porosity can be controlled by adjusting the diameter of the powder, and it is made of sintering, high-temperature resistance, and corrosion resistance.   Product Parameters Color: Metallic Shape: Square plate, disc, can be customized Process: Powder sintering Fine filter: 1μm~65μm Material: Pure titanium Operating Temperature: 0℃~300℃ Thickness: 0.8mm~2.8mm Performance: Acid resistance, alkali resistance, high-temperature resistance, breathable   Features 1. Corrosion resistance； It exists between the bipolar plate and the catalyst layer. During the electrochemical reaction, the high current density is 2A/cm2, which has high electrical corrosion resistance and must have corrosion resistance; 2. Porous air permeability Serve as a medium for hydrogen/oxygen or methanol/air to diffuse to the catalyst layer, and must be a porous and breathable material; 3. High conductivity To act as a current conductor, it must be a highly conductive material; 4. High thermal conductivity The reaction is an exothermic reaction, and overheating will cause damage to the proton exchange membrane. The gas diffusion layer must be a high thermal conductivity material to conduct heat away to avoid damage to the proton exchange membrane; 5. Good permeability Fuel cell reaction to generate water will cause performance degradation, so the gas diffusion layer must be able to export water and have high hydrophobicity;   Due to its characteristics, porous titanium plates can also be used in the following industries: (1) Manufacture of sweating material. That is, the pores of ordinary powder metallurgy materials are impregnated with low-melting point substances, and they work at high temperatures At this time, the impregnation melts and seeps out, making the material "sweat" to dissipate heat. In this way, ordinary materials can be used to replace expensive heat-resistant alloys, and the service temperature of heat-resistant parts can be further increased. (2) Manufacture filter material. Used to filter gas, filtrate, poison, etc. (3) Impregnated with the anti-friction agent to manufacture oil-containing and oil-free lubricated bearings; impregnated with spices to manufacture fragrance-containing handicrafts, etc. (4) Manufacture materials such as vibration reduction, noise reduction, and heat insulation.