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History
Water splitting
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Water splitting is the chemical reaction in which water is broken down into oxygen and hydrogen:
Electrolyser front with electrical panel in foreground
Electrolyser front with electrical panel in foreground
Water electrolysis ship Hydrogen Challenger
Water electrolysis ship Hydrogen Challenger
Electrolysis of water
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Electrolysis of water is using electricity to split water into oxygen and hydrogen gas by electrolysis. Hydrogen gas released in this way can be used as hydrogen fuel, but must be kept apart from the oxygen as the mixture would be extremely explosive. Separately pressurised into convenient 'tanks' or 'gas bottles', hydrogen can be used for oxyhydrogen welding and other applications, as the hydrogen / oxygen flame can reach approximately 2,800°C.
An AA battery in a glass of tap water with salt showing hydrogen produced at the negative terminal
An AA battery in a glass of tap water with salt showing hydrogen produced at the negative terminal
Hofmann voltameter connected to a direct current power supply
Hofmann voltameter connected to a direct current power supply
Match test used to detect the presence of hydrogen gas
Match test used to detect the presence of hydrogen gas
H2 production cost ($-gge untaxed) at varying natural gas prices
H2 production cost ($-gge untaxed) at varying natural gas prices