A fuel cells uses hydrogen and oxygen to make electricity, and produces water as a byproduct.
it uses electricity to turn water into pure oxygen and hydrogen then uses those gasses to produce electricityand it does this using a reversible Proton Exchange Membrane
Electricity separates hydrogen and oxygen atoms during a process called electrolysis, where an electric current is passed through water (H₂O). This current causes the water molecules to dissociate into their constituent elements, hydrogen and oxygen, by breaking the chemical bonds between them. At the electrodes, hydrogen ions (H⁺) gain electrons to form hydrogen gas (H₂), while oxygen ions (O²⁻) lose electrons to form oxygen gas (O₂). This process effectively uses electrical energy to facilitate the separation of these atoms.
you can use electricity to split the atoms apart into their respective units, ie hydrogen and oxygen, I think it's called electolosys or something like that. there is a portable gas welder that uses batteries and water. it splits the water with electricity and burns the gasses to weld. very cool.
The process of separating hydrogen (and oxygen) from water is not a matter of getting to a particular temperature. A different process called hydrolysis uses electricity to accomplish the separation.
Carbon,Hydrogen and Oxygen
I found this article at Space.com (see link in related links) I hope is helps. "Built by Russian engineers, the Elektron device aboard the space station uses electrolysis to separate water into hydrogen, which is dumped overboard, and oxygen. The 1,500-pound (680-kilogram) OGS rack works in much the same way, and will be able to provide 12 pounds of breathable oxygen daily under normal operations, NASA officials said."
Oxygen on a space station is primarily produced through electrolysis, a process that uses electricity to split water molecules (H2O) into oxygen (O2) and hydrogen (H2). This allows astronauts to breathe in the oxygen generated onboard the space station. Additionally, oxygen can also be supplied to the space station through resupply missions from Earth.
In the process of metabolism, the hydrogen and oxygen atoms from food molecules are used to create water (H2O) as a byproduct. The hydrogen atoms combine with oxygen to form water, which is then used by the body for various cellular functions and to help regulate body temperature.
When water is broken into hydrogen and oxygen, the water is undergoing a chemical reaction called electrolysis. This process uses electrical energy to break the bonds between the hydrogen and oxygen atoms in water molecules.
It's just called a modified engine. But the device used to convert hydrogen and oxygen into water is called a fuel cell, so that's probably what cars that run on hydrogen gas use to operate.
Hydrogen can be obtained from water through a process called electrolysis, which involves passing an electric current through water to separate it into hydrogen and oxygen gas. This process requires a source of electricity and typically uses electrodes to facilitate the reaction.
The Space Shuttle uses fuel cells to produce electricity. The hydrogen (H2) is burned with the oxygen (O2) to produce clean water (H2O). The heat is used to produce the electricity. The fresh water is then used by the crew or transfered to the International Space Station for drinking and showering. The Apollo Service Modules used a similar system for power and water.