Wednesday, May 2, 2012

The decription of GEFC-MEA Membrane Electrode Assembly

Membrane electrode assemblies, namely, MEA
MEA is a combination of fuel cell proton exchange membranes (PEMs), catalysts and electrodes. The proton exchange membrane is sandwiched between two electrodes, the catalyst is embedded between them. Electrode relative proton exchange membrane is insulated. These two electrodes into the anode and cathode.
The proton exchange membrane is a proton-permeable membrane, it is insulated. This insulating film transport protons from the anode to the cathode, electronics from the conductive path of transport to the cathode.
The electrode is hot pressing in on the PEM. Commonly used electrode materials, including carbon fiber, Toray (Toray) carbon fiber paper. E-TEK carbon fiber production called ELAT, it can to maximize gas transport in PEM, out of the water in PEM. elat in embedded noble metal catalysts, can be used as electrodes. Platinum is one of the most commonly used catalyst, but the other platinum group metals are also often used. Ruthenium and platinum are often used together, if the CO as a product of the electrochemical reaction, it would disrupt the proton exchange membrane fuel cell efficiency. Because of the high cost of rare earth metals, ongoing research to develop low-cost of the catalyst material. It is because of these high-cost factors become obstacles to the promotion of fuel cell.
GEFC-MEA Membrane Electrode Assembly is the affection of ammunition cell, electrolytic cell, electrochemical sensor etc.
A Seris of GEFC-MEA Products:
GEFC-MEA1 0.5 W/cm2 ( 30 ℃, 0.0 MPa H2/Air )
GEFC-MEA2 0.8 W/cm2 ( 30 ℃, 0.0 MPa H2/O2, Reversible )
GEFC-MEA3 0.03 W/cm2 ( 30 ℃, 0.0 MPa CH3OH/Air )
GEFC-MEA4 0.01 W/cm2 ( 30 ℃, 0.0 MPa C2H5OH/Air )
GEFC-MEA5 1-30 nA/ppm ( 0 – 1000 ppm CO )
Read more:GEFC-MEA Membrane Electrode Assembly for sale

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