PEMFC cells operate at relatively lower temp (200'c). Due ts relatively low temp. Cy the use these of precious metal based electrodes, cells must be operated on pune H. CF2 CF2 OF 2 X OF 4 0 CF2 0 CF2 2 FC O CF2 N Process CF3 HO x120 H full in processed at amode where is ane seperated fromportions on surface of Protons pass thru membrane to cathode Pt based catalyst side of cell while is transel in an external circuit, generating electrical On cathode side, another pt electrode output of the all. combines the brotons Cy electrous with 0 to produle H2O.
Anode 12,(g) 2H +20 Cathode 02(g) + 414'44 211011 Net run: 02(g)+213(9) 2th ou E'all 1.23V Advantages High energy conversion (75-82%) Fuel all minimizes expensive transmission lines by transmission losses. High neliability in electricity generation Cy Maintenance cost is low for these fuel all by by products are environmentally acceptable. they same fossil fulls Noisely thermal pollution low Disadvantages High cost by problems of durability ay storage of large amounts of hydr ogen Accurate life time unknown up it can't Dectrodes stone electricity are expensive by short lived storage Cy handling of H2 gas is dangerous because it is inflamurable.