18.4 Ultracapacitors
lUltracapacitors are
very high capacitance units
lBest suited to storage
periods of 0.1 second to 10 seconds
lStored energy is 0.5 C
V2
lCapacitances now reach
2.7 kF (kilofarad)
lCarbon electrode
surface areas 1000m2 to 2000m2 per gram provide high
capacitance
lElectrolytes are
sulfuric acid or potassium hydroxide
030331
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