Getting on With Volumetric Energy Density

Volumetric energy density isn't just to do with the crystal structure. It's how you design the cathode at the particle level. For instance, some powders pack better than other powders and create different porosity structures. That's completely independent of whether sodium or lithium is used in the cathode. With the sodium ion battery, it improves the like sodium ion batteries are less apt to go into thermal runaway.