Greener Alternative To Lithium-ion Battery

https://sh.itjust.works/post/4402219

Greener Alternative To Lithium-ion Battery - sh.itjust.works

So what is this made of if not lithium?

The battery uses a carbon electrode to store hydrogen that has been split from water, and then works as a hydrogen fuel cell to produce electricity

Carbon. Much cheaper, and basically, infinitely abundant. Big big big deal if they can scale it.

That always seems to be the rub. You can make these breakthroughs in a lab, but if they can't be translated to manufacturing, then it's not a huge achievement.
What’s the round trip energy efficiency?
I didn’t read anything beyond the summary