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Structural Techniques Promise Better Ultracapacitors

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Bmoray
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Iron
Re: Any Specs?
Bmoray   5/31/2014 7:14:14 AM
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A big Yes

Completely agree with you

Definitely it should note before

ttemple
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Platinum
Re: great new technique
ttemple   5/30/2014 7:10:25 AM
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@naperlou - I think the problem for large applications is that the energy density of capacitors is still much lower than batteries.  A wikipedia article states that supercaps are 10% energy density of batteries.  This makes them less suitable for bulk energy storage than batteries.

I think that the use for capacitors for automotive is to absorb braking energy.  Caps can absorb energy faster than batteries.  When braking hard, hybrids or electrics have to allow the mechanical brakes do some of the work, which throws away the energy that the batteries can't absorb quickly enough.  Capacitors can probably solve this problem, allowing more of the braking energy to be reclaimed.  (Driving habits can pretty much do the same thing.)

a2
User Rank
Gold
Re: Any Specs?
a2   5/30/2014 2:37:10 AM
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@tekochip: If there is a leakage issue, I feel it should be addressed instantly even before the voltage factor. Best would be solve one by one

tekochip
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Platinum
Any Specs?
tekochip   5/29/2014 2:01:16 PM
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Do they have a higher voltage, higher density, less leakage?  Supercaps have solved a few problems for me, but less leakage and a higher voltage would solve even more problems.


Daniyal_Ali
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Platinum
Re: great new technique
Daniyal_Ali   5/29/2014 12:57:41 PM
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A great example of how mixing two different technologies could lead to something extraordinary.
I agree naperlou; ultracapacitors have great features and could really benefit the larger systems. They easily beat the batteries in temperature, size, cycle life, price and efficiency, but still very little is being done commercially to replace the batteries with them.

naperlou
User Rank
Blogger
great new technique
naperlou   5/29/2014 11:20:26 AM
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Cabe, this is an interesting advance in the manufacture of ultracapicators. Mixing the two technologies shows some very forward thinking.

 

While they do show promise, people have been talking about that promise for a long time.  I was talking to a guy who had bought a patent on an dielectric that had 1.4 times the storage capicity of existing materials.  That was about five years ago.  I have heard nothing since.  This was an investor who has no upside for delaying this.  My point here is that we talk about all these great potential applications and then nothing happens for years.  I can see ultracapicators for smaller applications, but I wonder what the problem is with them for larger apps like automotive.

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