Publication Detail
Characterization of Electrochemical Capacitors for Electric/Hybrid Vehicle Applications
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UCD-ITS-RP-94-49 Presentation Series |
Suggested Citation:
Burke, Andrew (1994) Characterization of Electrochemical Capacitors for Electric/Hybrid Vehicle Applications. Institute of Transportation Studies, University of California, Davis, Presentation Series UCD-ITS-RP-94-49
Proceedings of the 29th IECEC Meeting
Energy storage specification requirements are presented for primary energy storage and pulse power units to be used in electric and hybrid vehicles. It is shown that electrochemical capacitors under development in the Department of Energy (DOE) Ultracapacitor program will meet the requirements for the pulse power units. Electrochemical capacitor development using a number of electrode material technologies is in progress and rapid improvement in energy density is being made. Recent tests of 3 V cells delivered on the DOE program indicate an energy density of 5 Wh/kg at a constant power density of 2.5 kW/kg has been achieved. Continued improvement in energy density is expected to result in devices approaching the DOE advanced program goal of 15 WMg by the end of 1994. A simple cost study for carbon-based devices indicates that meeting a cost goal of $0.5 to $1/Wh requires a processed carbon cost of $2 to $5/lb.
Energy storage specification requirements are presented for primary energy storage and pulse power units to be used in electric and hybrid vehicles. It is shown that electrochemical capacitors under development in the Department of Energy (DOE) Ultracapacitor program will meet the requirements for the pulse power units. Electrochemical capacitor development using a number of electrode material technologies is in progress and rapid improvement in energy density is being made. Recent tests of 3 V cells delivered on the DOE program indicate an energy density of 5 Wh/kg at a constant power density of 2.5 kW/kg has been achieved. Continued improvement in energy density is expected to result in devices approaching the DOE advanced program goal of 15 WMg by the end of 1994. A simple cost study for carbon-based devices indicates that meeting a cost goal of $0.5 to $1/Wh requires a processed carbon cost of $2 to $5/lb.