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The Charge of the Ultra - Capacitors (Sexy capacitor pics!)
Spectrum / IEEE ^
| Nov 2007
| Joel Schindall
Posted on 11/05/2007 12:14:01 PM PST by Uncledave
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Plain Old Plates: In a typical capacitor, electrons are removed from one plate and deposited on the other. Polarized molecules in the dielectric concentrate the electric field. One major factor determining capacitance is the surface area of the plates.
Plated Packed with Ions: An ultracapacitor can store more charge than a capacitor can, because the activated carbon has a pocked interior, much like a sponge. This means that ions in the electrolyte can cling to more surface area.
Enter the Nano-World: With finer dimensions and more uniform distribution, carbon nanotubes enable greater energy storage in ultracapacitors than activated carbon does.
How to Ultracap a Car: Ultracapacitors can power a number of a cars functions locally. The orange arrows show how an ultracapacitor discharges to power acceleration,while the blue arrows show energy flowingback during braking. The red squaresindicate places where ultracapacitors can be used.
1
posted on
11/05/2007 12:14:02 PM PST
by
Uncledave
To: RedStateRocker; Dementon; eraser2005; Calpernia; DTogo; Maelstrom; Yehuda; babble-on; ...
RE Ping
Renewable Energy Ping Please Freep Mail me if you'd like on/off
2
posted on
11/05/2007 12:14:38 PM PST
by
Uncledave
To: Uncledave
Sexy capacitor pics! I'll be in my bunk
3
posted on
11/05/2007 12:15:48 PM PST
by
Domandred
(Eagles soar, but unfortunately weasels never get sucked into jet engines)
To: Uncledave
The innovation that my colleagues John Kassakian and Riccardo Signorelli and I have pursued at MIT is to replace the activated carbon with a dense, microscopic forest of carbon nanotubes that is grown directly on the surface of the current collector. We thinkand our work so far supports our theorythat by doing so, we can create a device that can hold up to 50 percent as much electrical energy as a comparably sized battery. This feat would allow ultracapacitors to supplant batteries in a number of mainstream applications. Good luck to you, gents!
4
posted on
11/05/2007 12:17:26 PM PST
by
Uncledave
To: Uncledave
You just need a bank of these:
5
posted on
11/05/2007 12:17:39 PM PST
by
Yo-Yo
(USAF, TAC, 12th AF, 366 TFW, 366 MG, 366 CRS, Mtn Home AFB, 1978-81)
To: Uncledave
Sexy capacitors? Is that part of Kirchoff’s Law?.........
6
posted on
11/05/2007 12:20:46 PM PST
by
Red Badger
( We don't have science, but we do have consensus.......)
To: Yo-Yo
One of life’s simple pleasures as a Test Technician at Digital in the late 1970’s was placing a big screwdriver across the poles of a large capacitor. Safety Glasses please.
7
posted on
11/05/2007 12:22:17 PM PST
by
massgopguy
(I owe everything to George Bailey)
To: Uncledave
Just had a thought. I wonder if it is posible to capture static electricity while driving down the road. I know there is a charge built up in airplanes and when landing they need to be grounded.
To: Uncledave
9
posted on
11/05/2007 12:25:11 PM PST
by
Sender
(You are the weapon. What you hold in your hand is just a tool.)
To: massgopguy
One of lifes simple pleasures
Charged capacitor wars!. Burn cream please.
10
posted on
11/05/2007 12:27:05 PM PST
by
PA Engineer
(Liberate America from the occupation media.)
To: Domandred
Sexy capacitor pics! I'll be in my bunk
I suggest you forego the oral...
11
posted on
11/05/2007 12:27:39 PM PST
by
LexBaird
(Behold, thou hast drinken of the Aide of Kool, and are lost unto Men.)
To: massgopguy
One of life’s other simple pleasures as an Airman in tech school was charging up a 100 VDC 470mF cap, then tossing it at an unsuspecting buddy for him to catch barehanded...
12
posted on
11/05/2007 12:28:18 PM PST
by
Yo-Yo
(USAF, TAC, 12th AF, 366 TFW, 366 MG, 366 CRS, Mtn Home AFB, 1978-81)
To: Uncledave
What’s the energy density per pound?
13
posted on
11/05/2007 12:28:34 PM PST
by
Tarpon
To: massgopguy
Ha! How many capacitors met their end of life prematurely on the work benches of Electrical Engineering schools?
14
posted on
11/05/2007 12:28:41 PM PST
by
Incorrigible
(If I lead, follow me; If I pause, push me; If I retreat, kill me.)
To: Domandred
Now THAT’s funny, I don’t care who you are.
To: Yo-Yo
That's one entire FARAD? Geeezzzzzzz. That thing looks pretty small.
I've seen a few 1.0 F caps in these custom car stereo shops, where they add these huge caps so that the bass notes don't dim the headlights (seriously). But those are about the size of a quart of milk. At only 12 Volts DC, of course...
That thing looks MUCH smaller than that. Intersting times..........
To: willgolfforfood
17
posted on
11/05/2007 12:37:28 PM PST
by
Yo-Yo
(USAF, TAC, 12th AF, 366 TFW, 366 MG, 366 CRS, Mtn Home AFB, 1978-81)
To: Uncledave
So long as the Chinese don't steal then screw up this recipe, and we get even more bad caps (with vent goo) in our stuff.
18
posted on
11/05/2007 12:40:10 PM PST
by
polymuser
(There is one war and one enemy.)
To: Yo-Yo
A Farad eh.....what about the flux capacitor?
19
posted on
11/05/2007 12:41:03 PM PST
by
spokeshave
(Hey GOP...NO money till border closed and criminal illegals deported)
To: Uncledave
When the “flux capacitor” is developed, tada—warp drive!
20
posted on
11/05/2007 12:44:16 PM PST
by
lilylangtree
(Veni, Vidi, Vici)
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