Extrapolating from this supposed breakthrough (ie no reasonable basis) I'd guess there's a ton of breakthroughs left to be discovered. Material science is relatively slow but it doesn't seem like we're approaching a global asymptote afaict. I'd guess either nanoscale manufacturing continues improving and battery tech improves proportionally, or we experience some kind of targeted breakthroughs on a regular basis.
Extrapolating from this supposed breakthrough (ie no reasonable basis) I'd guess there's a ton of breakthroughs left to be discovered. Material science is relatively slow but it doesn't seem like we're approaching a global asymptote afaict. I'd guess either nanoscale manufacturing continues improving and battery tech improves proportionally, or we experience some kind of targeted breakthroughs on a regular basis.