What the general public thinks: Car or phone battery.
What the scientists mean: Button cell battery for hearing aids.
Reality: never makes it past the article/news cycle to scalable manufacture.
It’s not, if you charge any capacity with 1C, it will take an hour. Looks like they achieved stable charging at over 4C (charging current in amperes 4x larger than stated capacity in amp-hours).
There are tons of technologies that are inherently unscalable. Or won’t be for another 50 years. Commercial unviability is one thing, but physic limitations are another matter.
A Coulomb is basically a number of electrons, so it still very much depends on capacity. The only way it could avoid capacity dependence is if the amperage varied depending on total available uncharged capacity. That in itself is unlikely because the wires that transmit the electricity can only handle so many amps before getting too hot and melting apart, so any charging system must necessarily be constructed with intended charging capacity and rate in mind from the beginning.
“Fully charged in 12 minutes” is meaningless without a capacity.
Ok it has the ‘capacity’ to charge in 12 minutes - can you smell smoke?
I agree, the title is pretty useless.
Even something like “Fully charged a double A battery in 28 seconds” would’ve been useful/interesting.
What the general public thinks: Car or phone battery.
What the scientists mean: Button cell battery for hearing aids.
Reality: never makes it past the article/news cycle to scalable manufacture.
It’s not, if you charge any capacity with 1C, it will take an hour. Looks like they achieved stable charging at over 4C (charging current in amperes 4x larger than stated capacity in amp-hours).
EDIT: C is not Coulomb in this case
The point being, if it only works in the lab for minimal capacities, it’s never going to see the light of production.
How do you think batteries started out?
There are tons of technologies that are inherently unscalable. Or won’t be for another 50 years. Commercial unviability is one thing, but physic limitations are another matter.
True, but that doesn’t mean this is one of them.
That said, I think salt batteries will eclipse these.
A Coulomb is basically a number of electrons, so it still very much depends on capacity. The only way it could avoid capacity dependence is if the amperage varied depending on total available uncharged capacity. That in itself is unlikely because the wires that transmit the electricity can only handle so many amps before getting too hot and melting apart, so any charging system must necessarily be constructed with intended charging capacity and rate in mind from the beginning.
What solbear said. I edited my post to clarify i did not mean the SI unit.