On: Could hemp nanosheets topple graphene for making the ideal supercapacitor?

[Geee]

The energy density is still nowhere near Li-ion batteries. 12 Wh/kg vs. 150 Wh/kg.

[jessaustin → Geee]

Is it useful to compare capacitors to batteries in this fashion? It's not as though you could swap out one for the other, in pretty much any realistic application.

[matthiasl → jessaustin]

The hardware I work with uses a supercap to keep the real-time clock going during power failures. Previously, button cells were used for that.