A new kind of super capacitor

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Future electric cars, laptops may benefit from a new kind of capacitor
March 16th, 2009 - 12:05 pm ICT by ANI

London, March 16 (ANI):

Electric cars and laptops may soon benefit from a prototype capacitor that can store power as densely as a supercapacitor, and release it rapidly.

The novel capacitor has been developed by a team of scientists from the University of Maryland and the Korea Advanced Institute of Science and Technology.
Gary Rubloff, a chemist at the University of Maryland, says that the secret to the prototype’’s performance is that it has 10 billion tiny capacitors crammed into every square centimetre.

Electrodes connect up the mini devices so they can function as a single unit, the researcher adds.

Rubloff has revealed that the prototype capacitor can deliver energy at a speed typical of electrostatic capacitors, at a rate that would allow a single kilogram to deliver one megawatt of power, which is enough to power 10,000 100-watt light bulbs.
The researcher further says that the capacitor can also store energy as densely as a supercapacitor, with 1 kg holding 2500 joules.

“Our primary target (for this technology) is as part of a hybrid battery-capacitor system for electric cars. But there are many (potential) small scale applications, (including) better electrical storage systems for cellphones or laptops,” New Scientist magazine quoted Rubloff as saying.

A research article on the creation of the new prototype capacitor has been published in the journal Nature Nanotechnology. (ANI)
 
http://www.teslamotors.com/models/index.php

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Power (Watts) = Energy (Joules) /Time (Seconds)

So if the capacitor can release 1 MW of energy, that will take place within a space of:

1000000W = 2500 / t

t = 0.0025 seconds or 2.5 milliseconds.

Impressive by capacitor standards, and may be used to improve electric car acceleration by giving a boost when need, too bad it won't be replacing the battery anytime soon.

Bravo....you know your electricity well.
Just don't release all that 1MW in 2.5ms. It simply means short circuiting the cap and getting your goose over cooked. No offence meant.
 
He was referring to Instantaneous discharge rate.

However, there are ways to bleed the power stored in the capacitor on a 'demand' basis.
 
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