Sounds like a good match for sensor nodes where energy harvesting may be slow and consumption is intermittent. You don't need massive energy capacity, but you need good power density to support transmit bursts, and you need very high cycle durability.
scld 2 hours ago [-]
Yeah, as long as self-discharge/leakage rates are acceptable, there are a lot of use cases for this middle ground tech.
From "Eco-friendly artificial muscle fibers can produce and store energy" https://news.ycombinator.com/item?id=42942421 :
> "Giant nanomechanical energy storage capacity in twisted single-walled carbon nanotube ropes" (2024) https://www.nature.com/articles/s41565-024-01645-x :
>> 583 Wh/kg
That's with mechanical twisting though; graphene supercapacitors in general have lower energy density than (micro-) capacitors?
It also seema these devices are more 2D than 3D so surface area matters more than volume[2].
[1]: https://blog.knowlescapacitors.com/blog/capacitor-fundamenta...
[2]: https://pubs.acs.org/doi/10.1021/acsomega.2c07549
If you try to make an integrator out of this thing, you'll have a very bad time.