[mikro2nd]

I've been advocating Hydrogen for energy storage/transport for decades, but I don't think it works for planes. Specific energy (energy per kg) is against it, I'm afraid. It's not the H2 that weighs much, but it's such a sneaky/leaky gas that containment vessels end up weighing quite a lot. (Maybe there have been improvements in the past decade or so - it's been about that long since I looked.) Hydride storage can't deliver the H2 fast enough for aircraft (again, unless there've been some advances) and we'll not even speak of the flammability issue ;)

[benhurmarcel]

Many large companies in the aviation industry are investing hard on it though. For example: https://www.airbus.com/innovation/zero-emission/hydrogen/zer...