RE: Ryanair14 Apr 2021 13:38
From Wiki
There are three main types of cells, solid oxide electrolyser cells (SOECs), polymer electrolyte membrane cells (PEM) and alkaline electrolysis cells (AECs).[33] Traditionally, alkaline electrolysers are cheaper in terms of investment (they generally use nickel catalysts), but less efficient; PEM electrolysers, conversely, are more expensive (they generally use expensive platinum group metal catalysts) but are more efficient and can operate at higher current densities, and can therefore be possibly cheaper if the hydrogen production is large enough.
Methods to produce hydrogen without the use of fossil fuels involve the process of water splitting, or splitting the water molecule H2O into its components oxygen and hydrogen. When the source of energy for water splitting is renewable or low-carbon, the hydrogen produced is sometimes referred to as green hydrogen. The conversion can be accomplished in several ways, but all methods are generally more expensive than fossil-fuel based production methods. In Australia, green hydrogen has cost twice as much as conventional hydrogen and blue hydrogen, but a 2020 Australian National University report estimated that Australia could be producing it for much cheaper, even currently, and it could equal the price of conventional and blue hydrogen (at about A$2 per kilogram) by 2030, which would be cost-competitive with fossil fuels. An energy market analyst suggested in early 2021 that the price of green hydrogen would drop 70% over the coming 10 years in countries which have cheap renewable energy.
PEM efficiency is expected to increase to approximately 86%[44]Â before 2030. Theoretical efficiency for PEM electrolysers is predicted up to 94%.
Fuel from water, entirely "green", increasing efficiency, increased demand for PGM's, what's not to like?
The new "oil rush"?