Hydrogen (H on the periodic table) is a colourless, odourless, tasteless, flammable gaseous substance which burns with oxygen to form water, hence the derivative meaning of its name from Greek words “maker of water”.
Hydrogen is the most abundant chemical substance in the universe. It is used as a gas and liquid by many industries and applications such as petroleum refining, fertilizer production, hydrogenation of fats and oils, welding and the production of hydrochloric acid. Hydrogen is what’s used to fuel the NASA space shuttle. It can be used in fuel cells to generate electricity, or power and heat. With the global push for cleaner energy, hydrogen is being explored and implemented as a renewed fuel source for transportation and utilities.
The Colours of Hydrogen
Hydrogen is often referenced as being either green, blue, grey or brown and ranges on the carbon-friendly spectrum from high to low.
Green hydrogen is the fuel of the future and with Next Hydrogen water electrolyzers that fuel can be produced faster, cleaner and cheaper than traditional methods. It almost eliminates emissions by using renewable energy – while capturing the entire output range, even when intermittent – to power the electrolysis of water.
Blue hydrogen is produced from fossil fuels (natural gas) with carbon capture and storage. While much cleaner than grey and brown hydrogen, it is far from emission-free.
The majority of the gas currently used as an industrial chemical is either brown hydrogen if it’s produced through the gasification of coal or lignite, or grey hydrogen if it is made through steam methane reformation which uses natural gas as the feedstock. Neither of these processes are carbon-friendly.
Electrolysis of Water
The electrolysis of water is a simple method of producing hydrogen and Next Hydrogen’s specialty. A low voltage current is run through the water, and gaseous oxygen forms at the anode while gaseous hydrogen forms at the cathode. Typically the cathode is made from platinum or another inert metal when producing hydrogen for storage. If, however, the gas is to be burnt on site, oxygen is desirable to assist the combustion, and so both electrodes would be made from inert metals. *from wikipedia