Fuel Cells

Hydrogen gas

I am not able to give you a cost, as there are a number of fuel cell technologies, and it will be difficult to know which ones might ultimately become commercial. So far, fuel cells applications have required large government subsidies.

The "hydrogen car" is still apparently a long ways from becoming a reality- see related links.

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Hydrogen fuel cells have been in use since the 19th century, with the first practical fuel cell developed by Sir William Grove in 1839. However, they gained significant attention and development during the 20th century, particularly in the 1960s for space applications. Since then, hydrogen fuel cells have been increasingly adopted for various uses, including transportation and stationary power generation, as interest in clean energy technologies has grown.

one problem with fuel cell cars is that if they run on solar energy then if theres no sun that day it won't have the power to reverse it into energy and run the car with the sun energy needed!

No not nuclear fission, it is a chemical reaction which reverses the splitting of water by an electric current into hydrogen and oxygen. In Fuel Cell these two gases are brought together in an electrolyte either side of a porous membrane and fuses the gases together to make dc electricity and a by product, pure water.

Robert Groves, a 19th century cleric was first to publish this curiosity. The efficiency was hugely improved by Francis Bacon in the UK in the 1950's. He got 6 Kilowatts from his 'Bacon Cell ' prototypes and Pratt and Whitney took his designs for further development. 'Bacon Cells' were installed in the Apollo missions and provided virtually all the electrical power on the ship since oxygen and hydrogen were routine gases for NASA engineers. The water generated in the cells was drunk by the crew, reducing the weight at lift off.

When Apollo 13 suffered an explosion of an oxygen tank supplying the fuel cells the catastrophic loss of electrical power explains the failure of the Moon mission.

NASA recognised his indispensible contribution to the Moon missions and sent him a certificate of gratitude following the Apollo 11 Moon landing in 1969.

water

because it is less cost when compared to the fuel cell.

the fuel cells convert hydrogen into energy using a converter and that energy is used to power the vehicle

Hydrogen gas

More energy is produced per reaction in a fusion reaction than in a fuel cell. -Apex

There are two problems with hydrogen fuel cells. One is that the cars that run off of hydrogen fuel cells are very expensive to make another thing is that hydrogen storage is not easy. The work and money it would take to put up hydrogen stations around the country for cars is too much to even consider it. Also another problem with hydrogen is te oil companies that don't wanna lose their business.

Oxygen diffuses through the cathode

As i said again u tell me wiki answers and to people who know everything screw u and remember Y.O.L.O including u Sean

Fuel cells come in many varieties. Low-temperature designs such as proton exchange membrane fuel cells [PEMFC's, also known as polymer electrolyte membrane fuel cells] are mostly aimed at portable and transport applications

Hydrogen fuel cells deteriorate over time, and must be repaired or replaced. The speed at which they deteriorate is of some concern, as it may take as little as a few years for them to fail.

Sir William Grove

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Fuel cells and batteries are similar because they use a chemical reaction to provide electricity. A battery stores the chemical reactants, usually metal compounds like lithium, zinc or manganese. Once used up, you must recharge or throw away the battery. A fuel cell actually creates electricity through reactants (hydrogen and oxygen) stored externally. The fuel cell will produce electricity as long as it has a fuel supply. In short, a fuel cell vehicle is refueled instead of recharged.

There are currently no hydrogen powered cars commercially available. These cars would be far from green in any event because of the way we make hydrogen currently. Hydrogen is currently made by stripping hydrogen from natural gas and venting the rest of the material to the air.

Most hybrid cars run on diesel and electric. Typically the diesel engine provides the electricity for the electric motors which turn the wheels.

Alternatively some cars set off using a combustion engine, and then cruise using electric, until the vehicle comes to a steep slope to climb, at which point the combustion engine steps in to provide the necessary horse power to pull the vehicle.

Currently, no production autos use fuel cells.

There are currently no hydrogen powered cars commercially available. These cars would be far from green in any event because of the way we make hydrogen currently. Hydrogen is currently made by stripping hydrogen from natural gas and venting the rest of the material to the air.

The waste products from fuel cells are typically water and heat. In some cases, small amounts of carbon dioxide and other gases may also be produced depending on the type of fuel cell and the fuel used.