Experimental electrochemical capacitor test results

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Various electrochemical capacitors (ultracapacitors) are being developed for hybrid vehicles as candidate power assist devices for the fast response engine. The primary functions of the ultracapacitor are to level the dynamic power loads on the primary propulsion device and recover available energy from regenerative breaking during off-peak power periods. Ultracapacitors show promise toward being able to accept high regenerative pulses while exhibiting very high cycle life. This paper will present test data from selected US Department of Energy (DOE) supported ultracapacitor projects designed to meet the fast response engine requirements. Devices containing carbon, conducting polymers, and metal oxide electrode materials ... continued below

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13 p.

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Wright, R.B.; Murphy, T.C.; Kramer, W.E.; Satula, R.A. & Rogers, S.A. November 1, 1997.

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Description

Various electrochemical capacitors (ultracapacitors) are being developed for hybrid vehicles as candidate power assist devices for the fast response engine. The primary functions of the ultracapacitor are to level the dynamic power loads on the primary propulsion device and recover available energy from regenerative breaking during off-peak power periods. Ultracapacitors show promise toward being able to accept high regenerative pulses while exhibiting very high cycle life. This paper will present test data from selected US Department of Energy (DOE) supported ultracapacitor projects designed to meet the fast response engine requirements. Devices containing carbon, conducting polymers, and metal oxide electrode materials in combination with aqueous or organic electrolytes are being supported by the DOE. This paper will present and discuss testing data obtained from recent prototype capacitors supplied by Maxwell Energy Products, Inc., SAFT America, Inc., Federal Fabrics-Fibers and the University of Wisconsin-Madison. Constant-current, constant-power, leakage-current, and self-discharge testing of these various capacitors have been conducted. All devices were cycled between the rated charged voltage and zero volts for the constant-current tests and between the rated charged voltage and half that value for the constant-power tests.

Physical Description

13 p.

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OSTI as DE98050620

Source

  • 14. international electric vehicle symposium and exposition, Orlando, FL (United States), 15-17 Dec 1997

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  • Other: DE98050620
  • Report No.: INEEL/CON--97-01258
  • Report No.: CONF-971212--
  • Grant Number: AC07-94ID13223
  • Office of Scientific & Technical Information Report Number: 672134
  • Archival Resource Key: ark:/67531/metadc702221

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  • November 1, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 25, 2016, 5:43 p.m.

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Wright, R.B.; Murphy, T.C.; Kramer, W.E.; Satula, R.A. & Rogers, S.A. Experimental electrochemical capacitor test results, article, November 1, 1997; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc702221/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.