Fuel cells work like batteries, but they do not run down or need recharging. They produce electricity and heat as long as fuel is supplied. A fuel cell consists of two electrodes—a negative electrode or anode and a positive electrode or cathode —sandwiched around an electrolyte.
A fuel, such as hydrogen, is fed to the anode, and air is fed to the cathode. In a hydrogen fuel cell, a catalyst at the anode separates hydrogen molecules into protons and electrons, which take different paths to the cathode. The electrons go through an external circuit, creating a flow of electricity. The protons migrate through the electrolyte to the cathode, where they unite with oxygen and the electrons to produce water and heat.
Learn more about:. View the Hydrogen and Fuel Cell Technologies Office's fuel cell animation to see how a fuel cell operates. The U. The vehicles use a different type of fuel cell called a proton exchange membrane fuel cell PEMFC which works on the same principal but has a different construction. Not Helpful 2 Helpful You can;t, unless your toy car runs on 2 volts and a negligible amount of amps. Powering a toy car with this is akin to flying a Boeing with a model rocket engine.
Not Helpful 8 Helpful Because platinum is not reactive, it will not corrode in the water when current passes through it. Not Helpful 0 Helpful 4. No, you cannot. It will work for a bit until the oxides form on the wire and the reaction stops. It will also become part of the electrolyte. Not Helpful 1 Helpful 5. Alexis Aldoney. Yes, it does. The hydrogen H and the oxygen O that were separated during electrolysis combine through an electrochemical reaction, producing both an electric current so long as the two gases are still present and water.
Not Helpful 2 Helpful 4. Not Helpful 1 Helpful 3. I have found a wire 50 cm in length and 0. Prices may vary, of course. Not Helpful 2 Helpful 2. No, because copper will corrode in water during the process of electrolysis. Not Helpful 0 Helpful 1. Anything that runs on 2 volts of electricity, like an LED. You would need a much bigger cell to produce more electricity. Not Helpful 0 Helpful 3. Include your email address to get a message when this question is answered.
By using this service, some information may be shared with YouTube. Individual fuel cells produce only a small amount of electricity, much like the fuel cell described above.
Commercially, many individual fuel cells are assembled into stacks. Helpful 5 Not Helpful 4. Although this fuel cell used water as the electrolyte, commercial fuel cells use potassium hydroxide the type used in the Apollo space program , phosphoric acid, molten sodium or magnesium carbonate at high temperature or special polymers.
Helpful 0 Not Helpful 0. While operating this fuel cell, keep it away from open flames or heat sources. Although the amount of hydrogen produced is small, hydrogen is a highly combustible gas. Helpful 12 Not Helpful 6. You Might Also Like How to. How to. About This Article. Co-authored by:. Co-authors: Updated: September 17, Article Summary X To build a fuel cell, start by cutting 2 6-inch strips of platinum wire, and winding the strips around a nail to shape them into springs.
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