Quote:
Originally Posted by redpoint5
Only 2 drawbacks are extremely small energy density (by volume), and linear voltage increase/decrease during charge/discharge.
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As it's not meant to be used in a full-hybrid, the supercapacitors are already quite cost-effective. On a sidenote, now that much is said about graphene and how it would revolutionize the batteries, maybe it would be also interesting to take a look at carbon-based capacitors.