Fuel Cells

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.

Hydrogen fuel cells produce electricity through a clean process, emitting only water vapor as a byproduct, which significantly reduces greenhouse gas emissions. However, the production of hydrogen often relies on fossil fuels, which can negate some environmental benefits. Additionally, hydrogen is highly flammable and requires extensive infrastructure for storage and distribution, posing safety and logistical challenges. Despite these drawbacks, hydrogen fuel cells offer high efficiency and potential for use in various applications, including transportation and stationary power generation.

water vapor

No, it is not a renewable source of energy.

Fuel cell is a means of storage energy, for example hydrogen can be produced from any primary energy source; renewable (as solar energy) or exhaustible (as coal or oil) and then stored as energy in the fuel cell. When energy is needed later on as electricity then we can get from the fuel cell. Fuel cells is very efficient as in intermediate energy storage system in a proposed global energy system that is completely clean energy system. In this system, hydrogen is produced (parallel with electricity) from renewable (like solar) or non-conventional (like nuclear) primary energy source.

Fuel cells have typically used hydrogen and oxygen as a power source. You can get these gases by splitting water (H2O) either by electrolysis or by what we call water thermochemical decomposition. In this thermochemical decomposition method water can be split into hydrogen and oxygen in some consecutive intermediate steps where special chemicals are used as catalysts to get this decomposition possible at practical temperature ranges.

As an aside: For the same amount of energy, coal produces more greenhouse gases (CO2) than gasoline. So, if your electricity is generated form coal (which is common), a fuel cell powered or electric car will probably produce more greenhouse gases than a gasoline powered car (of the same size, power, etc).

Electric powered cars are considered environmentally friendly so far as the electricity is produced from a renewable or non-conventional primary energy source.