[PapaBear3625]

The hemp-based devices yielded energy densities as high as 12 Watt-hours per kilogram, two to three times higher than commercial counterparts.

Meanwhile, gasoline has an energy density of 12,200 Wh/kg.

[KarlInOhio]

Wikipedia lists a lead acid battery at 33-42 Wh/kg.

[cuban leaf]

I fully get your point. However, you can’t recharge gasoline. Then again, it would take more than a thousand charges for it to equal one gasoline “discharge”.

[Noumenon]

Most people have no idea about the energy density of modern liquid fuels and how that affects their everyday lives. And what it might mean not to have any.

[RightOnTheBorder]

I have read of graphene capacitors in the 35 Wh/Kg range. While the hemp based capacitors may be cheaper, are they 3 times cheaper?