A fuel cell is an electrochemical device which converts chemical energy into electrical energy without any intermediate steps. The estimated reserve of oil and gas is will last up to 2042, its advisable to shift to alternative energy sources for energy generation application. Considering the efficiency, economy and environment, hydrogen fuel cells are potential source of energy for both automotive and stationary power generation. From this its clear that the fuel cells have highest energy density compared to other sources, they can be used for numerous applications.