Self-Discharge of Electrochemical Capacitors in Relation to that at Batteries

  • B. E. Conway


Charged capacitors, like charged batteries, are in a state of high free energy relative to that of the discharged state, so there is a pseudo-driving force for their self-discharge. The driving force is thermodynamically the same as that which provides current and power when the capacitance is discharged through a load resistance, but then the resulting process is one of controlled discharge, which is different from that for spontaneous self-discharge on open circuit. The thermodynamic situation of instability (high free energy) of the charged state is illustrated in Fig. 18.1. The same kind of considerations apply to self-discharge of battery systems, where a similar phenomenon is well known.


Open Circuit Electrochemical Capacitor Potential Recovery Charged Capacitor Capacitor Electrode 
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Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • B. E. Conway
    • 1
  1. 1.Fellow of the Royal Society of CanadaUniversity of OttawaOttawaCanada

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