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The problem with supercapacitors is that they still have a relatively high cost per Watt-hour of energy storage potential. Depending on the design, which can rely on Carbon/Carbon electrodes, or metal oxide electrodes, material costs can severely hamper the cost/benefit of employing supercapacitors in these power demand situations. In the Carbon/Carbon case, this is primarily due to the use of an expensive, specially prepared, high surface area carbon particulate, or cloth, that can cost US $50-100/kg.<ref name="Ultra">Burke, Andrew. "Ultracapacitors: why, how, and where is the technology." Journal of Power Sources 91(2000): 37-50</ref> Decreasing the cost by a factor of 10 is required in order to increase the market size for supercapacitors. | The problem with supercapacitors is that they still have a relatively high cost per Watt-hour of energy storage potential. Depending on the design, which can rely on Carbon/Carbon electrodes, or metal oxide electrodes, material costs can severely hamper the cost/benefit of employing supercapacitors in these power demand situations. In the Carbon/Carbon case, this is primarily due to the use of an expensive, specially prepared, high surface area carbon particulate, or cloth, that can cost US $50-100/kg.<ref name="Ultra">Burke, Andrew. "Ultracapacitors: why, how, and where is the technology." Journal of Power Sources 91(2000): 37-50</ref> Decreasing the cost by a factor of 10 is required in order to increase the market size for supercapacitors. | ||
'''Work in progress''' | |||
== Factors affecting performance == | == Factors affecting performance == | ||
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By using a 6M KOH electrolyte, the carbon aerogel produced using an R/C ratio of 1500 produced the highest capacitance in the experiment with 110.06 F/g at 1 mV/s scan rate.<ref name="Aero" /> When this scan rate was increased, the capacitance dropped off quickly as the ions in the electrolyte were likely unable to diffuse into the pores as quickly as needed. | By using a 6M KOH electrolyte, the carbon aerogel produced using an R/C ratio of 1500 produced the highest capacitance in the experiment with 110.06 F/g at 1 mV/s scan rate.<ref name="Aero" /> When this scan rate was increased, the capacitance dropped off quickly as the ions in the electrolyte were likely unable to diffuse into the pores as quickly as needed. | ||
Over 400 charge/discharge cycles, the specific capacitance remains relatively constant, ensuring good performance over the long run. | Over 400 charge/discharge cycles, the specific capacitance remains relatively constant, ensuring good performance over the long run. | ||
== References == | == References == |