This is an interesting concept, but looks more suited for supplemental power -- extending operating time beyond what the normal lithium ion battery delivers -- rather than the primary energy storage device.
You are right now, since its only 1/10th the density of Li-ion today, but the researchers claim that they could rival NiMH very soon and current Li-ion in just a few years. Of course, Li-ion will have moved on by then to even higher densities, and others like Li-air will be on the scene too. Nevertheless for devices that have significantly more volume in their cases than their existing Li-ion battery takes up, building the battery into the case could become the primary power source.
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. ;-)
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.
I mentioned: "...there should have been a technology such that the display of the mobile device (or a transparent screen on it...the screen protector itself) to be able to harvest electrical energy from the solar energy to charge the battery of the device, so that my mobile will get charged on the way to my office..."
Hope to see a product around this idea sooner than I expected!!! But, did they stole my idea?.... LOL
Btw...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?
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.
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.
I did not read anything about the wear-tear and crack related issues in phone cases or in other structures. I assume that super-capacitor will need to be protected in the similar way that of the current Li-ion batteries.
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.
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.
Mogulman, you're right on with the turbo app. There is development work already going on in this area. Several companies are working on just that idea, one brief discussion is at the following link: http://jalopnik.com/5855317/will-bmws-electric-turbocharger-end-turbo-lag
Note the use of motor/generator, acting as generator driven by the exhaust turbine, charging supercap and batteries, instead of using wastegate, when full potential boost is not necessary.
I see two very different roles for Supercaps. First, they can hold the short term power buffer and spare the batteries the frequent charge / discharge cycles they normally experience. Secondly, Supercaps can be charged very quickly and then transfer the charge to the battery at whatever rate the battery can tolerate. This would allow for quick partial recharges when power is available and then the charge could be gradually transferred to the device battery as you move on so the discharged Supercap is ready for another quick jolt of power at the next available recharging spot.
I see two very different roles for Supercaps-DrQuine
Yes, you are right on both counts. These Vanderbilt researchers, however, also claim that their architecture can hold its charge as long as many batteries, plus they are seeking to improve them, thus giving them at least a fighting chance at taking over the battery function for some applications someday.