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A comment on Graphene Supercapacitors Ready For Electric Vehicle Energy Storage. Parent comment

Re:Graphene Supercapacitors Ready For Electric Vehicle Energ... by krasin on Thursday November 14, 2013 @12:29AM (#6730749)
there's no magic here. For example, activated carbon [1] has a surface of 500 m^2 per gram. It's just a very porous structure.

[1] http://en.wikipedia.org/wiki/Activated_carbon

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Re:Graphene Supercapacitors Ready For Electric Vehicle Energ... by krasin on Thursday November 14, 2013 @12:34AM (#6730762)
an easier analogy: 100-stories building that stays on 1 cm^2 area has a total surface of 100 cm^2. Now, make the height of this building 1 cm, and you have 100 cm^2 surface in 1 cm^3 volume.

Make it 1M floors, and you are talking about 1M cm^2 = 100 m^2

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