- #1

taylaron

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Thanks everyone. I appreciate your input

-Tay

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- Thread starter taylaron
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- #1

taylaron

Gold Member

- 391

- 1

Thanks everyone. I appreciate your input

-Tay

- #2

taylaron

Gold Member

- 391

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I'm trying to find out how many coulombs of electricity I can store per m^2 on activated carbon. This is your classical question of "how much surface area in a capacitor does it take to equal the capacity of a battery?"

I'm having difficulty because calculating the number of available valence electrons is difficult since all of the carbon atoms are bonded with each other, filling many of those valence electrons. I don't understand how one can mathematically calculate how many coulombs can be stored per square meter without knowing the exact molecular structure.

Has there been an experiment done to provide this data?

Regards,

-Tay

- #3

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I don't understand how one can mathematically calculate how many coulombs can be stored per square meter without knowing the exact molecular structure.

If I'm not mistaken, the molecular structure doesn't matter so much as the effective surface area of the material. In the case of a simple flat plate capacitor, the effective surface area is equivalent to the cross sectional area of material being used for the capacitor.

And to answer your first question, yes carbon, activated or not, is very electrically conductive.

- #4

taylaron

Gold Member

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In addition, I found that the answer to my question in that storing energy in the form of static electricity has significantly less energy density compared to possible chemical reactions. There are only so many valence electrons in an atom, but even more electrons can be transferred during a chemical reaction. This is the primary reason why super capacitors can (I want to say never) provide as much power in the long term than a battery.

-Tay

- #5

taylaron

Gold Member

- 391

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Thoughts anybody?

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