Science

Super Capacitor and Battery in One

Chemists from the Northwestern University managed to last find material that can prove to be invaluable in August for electric cars. Keeps it at the same time as the battery and SuperCapacitor.

Super Capacitor and Battery in One
Lithium ion batteries still hold the crown for energy storage, storing 70 to 250 watt-hours per kilogram. However the nitrogen doped supercapacitor is better for power output, being able to crank out 26 kilowatts per kilogram compared to the Li-ion battery maximum of about 1 kilowatt per kilogram.

Super capacitor may it to itself load (and discharge) extremely quickly, but are not able to store electrical loads for a long time, because the cars on electricity must now use them in combination with classical batteries.

173px-Electric_double-layer_capacitor_(Activated_carbon_electrode_-_Tube_type)

Schematic construction of a wound supercapacitor 1.Terminals, 2.Safety vent, 3.Sealing disc, 4.Aluminum can, 5.Positive pole, 6.Separator, 7.Carbon electrode, 8.Collector, 9.Carbon electrode, 10.Negative pole (wikipedia.org)

The new material, which is a rigid polymer with infinite even amounts of micro pores, it can do both of these things. You to a group of COF (covalent organic frameworks), material very train promising in many different angles, but offering a rather limited electric conductivity. Connected it was but with the hard core current polymer called PEDOT, so that new material is able to rapidly in August to load and at the same time store electric charge, and created with the electrode is strong, no problem can withstand 10 thousand cycles of loading/discharge.

Supercapacitors are constructed with two metal foils (current collectors), each coated with an electrode material such as activated carbon, which serve as the power connection between the electrode material and the external terminals of the capacitor. Specifically to the electrode material is its very large surface area. In this example the activated carbon is electrochemically etched, so that the surface of the material is about a factor 100,000 larger than the smooth surface.

And this is not the only advantage, because it is inexpensive to produce, so soon it can contribute to the electric revolution on our roads.