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Theoretical ultimate supercapacitor?

Theoretical ultimate supercapacitor?

Science

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Originally posted by sonhouse
A bit off topic but you mentioned wakefield accelerators, I found this link, 3 GEV in 3 1/3 CM! Had you seen this work? At Berkeley:

http://www.physorg.com/news78323567.html
No, I have not seen it work, I worked as a student intern on some apparatus related to the experimental setup, but it was still under construction. Not sure how things are now. It wasn't at Berkeley, in any case.

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Originally posted by Andrew Hamilton
Is there a theoretical maximum specific energy (which is the energy density in terms of energy per unit mass rather than per unit volume) that a supercapacitor can store and, if so, what is it?

I would love to know this because I just wonder what the storage capacity of the best supercapacitors would be in the far future assuming unlimited advance ...[text shortened]... r!

I tried searching the net for this info but I found nothing relevant for ages so given up.
May I kindly suggest you cut back on sugar, at least for a while?

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Originally posted by sasquatch672
May I kindly suggest you cut back on sugar, at least for a while?
Just a side thought: Sugar has an energy density of very roughly ~16MJ/kg which is not bad.
If only a reasonably cheap and efficient fuel cell could be designed to use it directly, we would have a possible reasonable alternative to gasoline.

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