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[Liveleak] Supercapacitor. - Page 4

post #31 of 47
Quote:
Originally Posted by DesertRat View Post



Kinda odd, I'd been thinking about what possible material(s) would be/need to be discovered to make coil guns/gaussian guns practical. This may well be it.

One of the big issues with Gauss rifles were the rails deforming. Back in the late 70's and 80's SRI, Stanford Research Institute, was tying to bring one to a state that the Department of Defense could actually use them. While they could generate the energy, the materials themselves used in construction just couldn't take it, they simple warped and fell apart.
    
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post #32 of 47
Quote:
Originally Posted by Rothen View Post

From what I have studied of capacitors, I don't think they'll be replacing batteries any time soon. There's a fundamental difference on how they function.
The capacitor will just store extra charge i suppose.
post #33 of 47
Can someone explain the leakage problem?
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post #34 of 47
Meh... I will stick with my flex capacitor that uses plutonium. tongue.gif
     
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post #35 of 47
Quote:
Originally Posted by PostalTwinkie View Post

One of the big issues with Gauss rifles were the rails deforming. Back in the late 70's and 80's SRI, Stanford Research Institute, was tying to bring one to a state that the Department of Defense could actually use them. While they could generate the energy, the materials themselves used in construction just couldn't take it, they simple warped and fell apart.

Actually that's rail guns. Both elctro-magnetic in function, but different means. Rail Guns require conduction directly, gauss rifles(coil guns) are basically linear motors on steroids.
post #36 of 47
Interesting stuff, but I don't see a practical application until someone can basically eliminate the parasitic leakage. I wish the video would have described the circuit and method of charging and discharging as well. Anyone tried to understand the molecular configuration of the material? Is is intrinsic carbon, or does it have some dopant, etc...
post #37 of 47
This is also nice tongue.gif

But what's also nice about graphene is that it is 1 of the fastest semi-conducters.
About 200x faster than Silicium.

Silicium --> transistors --> processors biggrin.gif

What's next? A processor going a lot faster than a normal one???
   
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post #38 of 47
Quote:
Originally Posted by MGX1016 View Post

Can someone explain the leakage problem?

Sure thing. Ultracaps (supercaps) lose energy over time even when not connected to anything. All energy storage devices do this, though the method of loss varies. Part of it is chemical (in batteries) and part of it is due to the device's own internal resistance between the two plates. Large capacitors just tend to do so more aggressively than say batteries or small traditional electrolytic capacitors. The effect is especially noticeable since the timeframe compared to batteries tends to be short due to their overall much lower energy density. One of those ultracaps I pictured earlier in the thread only stores about as much energy as a AA battery. The difference is these caps can charge or discharge at a rate of hundreds of amps if you wanted them to. Once capacity is improved one or two orders, they will become practical replacements for batteries that can charge as fast as your wall socket will let them.
post #39 of 47
Waiting for graphene to come into consumer products. smile.gif

And somebody please add it to the dictionary. tongue.gif
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post #40 of 47
I'll believe it when I can buy supercaps with energy densities comparable to a lithium battery.
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