...could result in a battery that produces 75 Wh/kg
75 Wh, at 100% efficiency will run a 0.1 hp motor for an hour.
A 100 kg battery using this technology would be able to run a 10 hp motor for an hour.
How is this supposed to be good?
Just making the battery weigh less AND be a part of the structural integrity is a huge bonus for transportation vehicles, land, sea, or air.