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Proton-exchange membrane fuel cells (PEMFC), also known as polymer electrolyte membrane (PEM) fuel cells, are a type of fuel cell being developed mainly for transport applications, as well as for stationary fuel-cell applications and portable fuel-cell applications. Their distinguishing features include lower temperature/pressure ranges (50 to ...
Whereas the common PEM fuel cell, also called Low Temperature Proton Exchange Membrane fuel cell (LT-PEM), must usually be operated with hydrogen with high purity of more than 99.9 % the HT-PEM fuel cell is less sensitive to impurities and thus is typically operated with reformate gas with hydrogen concentration of about 50 to 75 %.
Download QR code; In other projects ... Image:Solid oxide fuel cell.svg and [[w:Image:Fc diagram pem ... The following page uses this file: Membraneless Fuel Cells;
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The primary application of proton-exchange membranes is in PEM fuel cells. These fuel cells have a wide variety of commercial and military applications including in the aerospace, automotive, and energy industries. [9] [16] Early PEM fuel cell applications were focused within the aerospace industry.
Intended to replace [[:Image:Fuel_cell_still.gif|raster version]]. File size is almost two times the original GIF file. It probably needs a lot of touching up as well as optimization. 2007-07-22 12:28 Jafet 550×450× (42142 bytes) Image description of [[Proton exchange membrane fuel cell]]. Intended to replace [[Image:Fuel_cell_still.gif ...
Fuel cells are classified by the type of electrolyte they use and by the difference in start-up time ranging from 1 second for proton-exchange membrane fuel cells (PEM fuel cells, or PEMFC) to 10 minutes for solid oxide fuel cells (SOFC). A related technology is flow batteries, in which the fuel can be regenerated by recharging.
Ruthenium and platinum are often used together, if carbon monoxide (CO) is a product of the electro-chemical reaction as CO poisons the PEM and impacts the efficiency of the fuel cell. Due to the high cost of these and other similar materials, research is being undertaken to develop catalysts that use lower cost materials as the high costs are ...