Pem Fuel Cell Advantages And Disadvantages
ABSTRACT PEM fuel cell is an electrochemical energy conversion device which converts the chemical energy into electrical energy, with waste heat and liquid water as by-products. PEM cell is portable, and thus is considered to be an alternative to fossil fuels in automobiles. The difficulties have to be prevented is by commercializing of PEM fuel cell are its cost and hydrogen infrastructure. One of the means of reducing the cost of PEM fuel cell is by improving its performance. The energyefficiency of the fuel cell is defined based on the first law of thermodynamics. On the other hand, the second law efficiency or exergy efficiency of a PEM fuel cell is defined as the ratio of electrical output to the maximum possible work output (or, availability), could give a true measure of the PEM fuel cell’s performance. The effects of the cell temperature and membrane thickness on the power output, and on …show more content…
The rest of the types of fuel cells use liquid electrolytes. Further the PEM fuel cell operates at low or moderate temperatures (50-90OC) while the operating temperature of the solid oxide fuel cell is very high (700-1000 OC). Since PEM fuel cells are portablethey have become popular for application in transportvehicles, space vehicles and electronicdevices. PEM fuel cells have also certain other advantages over the conventional IC engines because of their higher efficiency and the emissions are ver less. In spitghe of these advantages the use of PEM fuel cells has became restricted due to their high cost, which is due to the usage of platinum-based catalyst and Nafion polymer membrane in the fuel cell.The United States hasbeenspendingmillions of dollars on research and development of PEM fuel cells. The main areas of research are the search for alternative and cheaper catalyst, increasing the operating temperature and increased the working
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