Alkaline Fuel Cell (AFC) Phosphoric Acid Fuel Cell (PAFC) Molten Carbonate Fuel Cell (MCFC) Solid Oxide Fuel Cell (SOFC) These fuel cells operate at different temperatures and each is best suited to particular applications. The main features of the five types of fuel cells are summarized in Table 1 below.
Alkaline fuel cells (AFCs) operate well at room temperature, yield the highest voltage at comparable current densities, but the use of potassium hydroxide requires the elimination of carbon dioxide...
Although alkaline fuel cells are the most temper mental of all fuel cells, it can produce the maximum amount of energy (80% efficiency) when used as a water-heating device. AFCs use an KOH electrolyte because it is the most conductive of all alkaline hydroxides; however, this requires extremely pure hydrogen and oxygen input to avoid poisoning. Aug 29, 2014 · The advantages of liquid fuel cells (LFCs) over conventional hydrogen–oxygen fuel cells include a higher theoretical energy density and efficiency, a more convenient handling of the streams, and enhanced safety. This review focuses on the use of different types of organic fuels as an anode material for LFCs. Fuel cells have several advantages over other more common forms of onsite power. They are significantly cleaner, quiet, less expensive to operate, and require little real-estate.
Direct methanol fuel cell technology is relatively new compared to hydrogen fuel cells. Alkaline Fuel Cells. Alkaline fuel cells can employ a number of non-precious metals as a catalyst at the cathode and anode and a solution of potassium hydroxide in water as the electrolyte. MnO2 over the appropriate potential ranges in alkaline solution. Hence, MH anodes and MnO2 cathodes in alkaline solution may be used as a rechargeable alkaline cell.5,6 Recent results show that such cells has several advantages, particularly long cycle life under the correct conditions, no memory effect, high capacity, nontoxicity, The ALKALINE FUEL CELL (AFC) is a very efficient fuel cell that requires pure hydrogen fuel and pure oxygen. It uses an aqueous (water-based) electrolyte solution of potassium hydroxide (KOH) in a porous stabilized matrix. AFCs have been used in the US space program since the 1960s to produce electricity and fresh water for spacecraft. The ALKALINE FUEL CELL (AFC) is a very efficient fuel cell that requires pure hydrogen fuel and pure oxygen. It uses an aqueous (water-based) electrolyte solution of potassium hydroxide (KOH) in a porous stabilized matrix. AFCs have been used in the US space program since the 1960s to produce electricity and fresh water for spacecraft.