• JohnDClay@sh.itjust.works
    link
    fedilink
    arrow-up
    6
    arrow-down
    1
    ·
    8 months ago

    That energy could still be going somewhere else or used to make hydrogen. Plus making the cards is pretty material and energy intensive.

      • JohnDClay@sh.itjust.works
        link
        fedilink
        arrow-up
        6
        ·
        edit-2
        8 months ago

        The atmosphere of earth is 0.000055% hydrogen, so it’s not common here. But it’s useful because it’s an easily transportable energy storage medium.