I can see lots uses for this technology. One that comes to mind is on turbo chargers. Turbo chargers on a car have a problem that there is a lag between when you accelerate and it kicks in. A short high intensity discharge from a supercap could make the delay minimal.
You are rightly pitched the application of solar panels used in the calculators few years before, but actually the power requirement of the cell phone is far more higher as compared to that calculators, and the researches in the solar panel is not being able to cope up with the demands of the cell phone, but now it will be the right time if two technology can be combined to handle the functionality of Li-ion batteries it will be really a remarkable achievement.
You are right with the technology in its current incarnation, but the researchers claim that they are improving it enough that the volume of the case could contain a supercap large enough to power mobile devices in the future. Their short-term goal is to rival NiMH battery's density with Li-ion in their sights within a few years.
what is the time taken by the super-cap to get completely charged with solar touch scree (patented by Apple)and how long the supercap would hold the charge on typical phone usage?--Sanjib.A
Sorry, but Apple's patent is separate from Vanderbilt's work, so no metrics there. The Vanderbilt author claims to have a supercap in his office which has held its charge for two years, but no metrics yet on how long a smartphone-case sized unit would last since it depends on how much bigger the case is than a standart Li-ion battery. If the case is 10-times bigger than the Li-ion batter it houses now, then I would assume it would last just as long in use.
I would have agreed with you before speaking with the Vanderbilt researchers, and they spoke ab out solutions to all the problems you mention including higher DC and making them very thin. There is more info in a paper at:
But its not free. I'll inquire with the author to see if he's got more/better descriptions of how he plans to achieve his goals and get back to you.
Similar arguments are made for embedded passives. The super caps either have to get higher DConstants or thinner. Making them thinner reduces breakdown voltage. So in the end, you really can't get there from here. They are useful for what Caps are typically useful for. mitigating current transients. Bah humbug. ;-)
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