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Science Forum Index » Physics - Electromagnetic Forum » Make your own MODERN capacitor?
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| noone |
 Posted: Tue Dec 25, 2007 6:32 am |
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Sorry for the cross-posting; this crosses over a bunch.
Is it within the reach of amateur science to create an
electrolytic or double layer ("super") capacitor?
Nothing particularly state-of-the-art, of course, but
something that would demonstrate higher capacitance
by virtue of thin aluminum oxide dielectrics and
conductive electrolytes, or the phenomenal area of
some form of commercial (or self-prepared) activated
or fibrous carbon.
(The ideal result would be a 10F, 1.5V capacitor the
size of a soda can made from pyrolyzed paper. That
might be useful as well as academically interesting.)
Thanks
Bill W |
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| Neil Bates |
| Posted: Thu Dec 27, 2007 1:09 pm |
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"noone" <fpp@foo.com> wrote in message
news:E9CdnWd2OeK8Qe3anZ2dnUVZ_rSrnZ2d@comcast.com...
Quote: Sorry for the cross-posting; this crosses over a bunch.
Is it within the reach of amateur science to create an
electrolytic or double layer ("super") capacitor?
Nothing particularly state-of-the-art, of course, but
something that would demonstrate higher capacitance
by virtue of thin aluminum oxide dielectrics and
conductive electrolytes, or the phenomenal area of
some form of commercial (or self-prepared) activated
or fibrous carbon.
(The ideal result would be a 10F, 1.5V capacitor the
size of a soda can made from pyrolyzed paper. That
might be useful as well as academically interesting.)
Thanks
Bill W
Yeah, what kind of laser pulse gun could you make from that and a good
diode? |
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| noone |
| Posted: Fri Dec 28, 2007 6:48 am |
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Guest
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Quote: (The ideal result would be a 10F, 1.5V capacitor the
size of a soda can made from pyrolyzed paper. That
might be useful as well as academically interesting.)
Yeah, what kind of laser pulse gun could you make from that and a good
diode?
Not much of one. Energy is 1/2 CV^2, so the 10F 1.5V cap doesn't
have that much more energy than the usual disposable flash camera.
(0.5*10*2.25 = 11.25J, vs 0.5*100E-6*90000 = 4.5J) However, I think
they might be useful for solar power; storage for solar cells...
(Hmm. Thin film solar cells printed on the backside of one plate
of a a thin carbon aerogel cap:
+++++++++++++++++++++ (upper (transparent) electrode of solar cell.
--------------------- (active material of solar cell)
--------------------- ( printed on foil; also a cap plate)
===================== (carbon aerogel layer w electrolyte)
--------------------- (other foil of aerogel cap. connected to +++)
photoconversion and energy storage in one thing package... Where's
my patent lawyer?)
BillW |
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