A surprising breakthrough could help sodium-ion batteries rival lithium—and even turn seawater into drinking water. Scientists discovered that keeping water inside a key battery material, instead of removing it as traditionally done, dramatically boosts performance. The “wet” version stores nearly twice as much charge, charges faster, and remains stable for hundreds of cycles, placing it among the top-performing sodium battery materials ever reported.
ok but this specific source is quite sober
well maybe, but that’s exactly what crying wolf does. You hear “twice the enrgy density” so many times that you stop believing it, even if one day it really is true.
If my car battery’s energy density had doubled every time I read a headline saying that a new battery tech will double energy density, it’d now have more energy storage than the sun.
spoiler
edit: assuming 6x10^43j energy capactiy in the sun and 3.6x10^8j (100kwh) in my car, it’d take 116 energy-doubling articles :)