"The test results from the new polymers suggest that extremely high energy density supercapacitors could be constructed in the very new future." Not "We have a demo model working". More on the actual chemistry, from 2017.[1] Seems they announced this before, in June 2017.
Even if this doesn't turn into a big energy storage thing, maybe they can replace ordinary electrolytic capacitors. Least reliable component in electronics.
(Link first posted here by BugsJustFindMe. Also says "if these values of capacitance can be achieved in production, it could potentially see supercapacitors achieving energy densities of up to 180whr/kg - greater than lithium ion batteries.")
They claim 4F / cm² between smooth surfaces, which seems impossibly high. Even if the dielectric is only 5 Å thick, that corresponds to a dielectric constant of 2.2e6. The highest dielectric constants materials I know of are around 2e4.
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[ 3.0 ms ] story [ 32.7 ms ] threadEven if this doesn't turn into a big energy storage thing, maybe they can replace ordinary electrolytic capacitors. Least reliable component in electronics.
[1] https://chemical-materials.elsevier.com/new-materials-applic...
> By using small single layer cells charged to 1.5 volts for two to five minutes and then run demonstration devices, including a small fan.
> By using a three-cell series stack that is able to be rapidly charged to five volts and operate an LED.
https://www.surrey.ac.uk/mediacentre/press/2018/alternative-...
(Link first posted here by BugsJustFindMe. Also says "if these values of capacitance can be achieved in production, it could potentially see supercapacitors achieving energy densities of up to 180whr/kg - greater than lithium ion batteries.")
Wikipedia shows 100-250whr/kg for lithium ion. Not familiar enough to know which is right.
I'm not sure why the 2016 release was posted instead.