If a battery such as this were productized, what materials would it likely be made of?
https://mastodon.social/@ieeespectrum/114971915076185383
(The article is so lightweight it communicates little, but it links a proper paper, which is so heavyweight it communicates little. I'm not even completely sure in what form the energy is stored in this battery. Trapped photons??! Could that possibly be right?)
@mcc
'The improvement might seem minor—the new prototype can store energy for microseconds instead of nanoseconds. Still, “that’s not bad comparatively,” Campaioli says. “It’s the equivalent of having a phone that charges in 30 minutes and runs out of battery after about 20 days if left idle."'
The word "equivalent" seems to be doing a lot more work than the battery itself can.
@petealexharris @mcc it's not even that impressive, given that by "idle" he would have to mean "completely turned off". They are not drawing any power from the battery AFAICT. If I take a new smartphone, charge it for 30 minutes (on a fast charger) and leave it off for 30 days, it might still have a bit of charge.
