This is a follow up to a post I wrote a few moths ago about #hydrogen Fuel Cell Electric Vehicles (#FCEV) as an alternative to Battery Electric Vehicles (#BEV).
An article from Cornell states that even so called “Blue Hydrogen” is a more CO₂ intensive than diesel.
“The carbon footprint to create blue hydrogen is more than 20% greater than using either natural gas or coal directly for heat, or about 60% greater than using diesel oil for heat, according to new research published Aug. 12 in Energy Science & Engineering.”
Those metals aren't mined in isolation they're usually mixed with other types of ore as well. So it's not as bad as you might think.
@antares Combusting blue hydrogen for heat makes no climate sense. Using H2 as a heat source can make sense. Particularly if you catalytically combust H2.
https://www.sciencedirect.com/science/article/abs/pii/B9781782423638000104
@antares
The energy density is just so low, more energy is needed to extract it.
It's individual hydrogen atoms, instead of long chains packed into liquid form (gasoline).
But what's the carbon footprint for extracting battery rare metals like?