膜科学与技术学报

抽象的

Membrane in Polymer Fuel Cells

Tahereh Safari

Generally, the membrane is referred to as any thin, permeable or semi-permeable skin or curtain. The membrane has a selective permeability that acts like a dam (barrier). The most important feature of a membrane is its chemical nature. The chemical nature of each membrane contains the presence of molecular groups, its microcrystalline structure, cavity statistics (cavity size, distribute cavity size, density, volume size) and its structural symmetry. The most important properties of each membrane in terms of performance in a separation system are permeability and selectivity. In this paper, we first describe the membrane and its properties, applications, separation mechanism and as well as the membrane in polymer fuel cells. Then, we explain the porous membranes, membrane of polymer nanocomposite, fuel cell of membrane-electrode, layer electrode retaining elements in membrane fuel cells-electrodes, flow collectors, transferring reactants to the membrane electrode fuel cell, the characteristics of the oxidation current/transfer collector plates, characteristics of the collecting plates, the flow/ transfer of the fuel (hydrogen) and the construction of a membrane-electrode fuel cell.