Effect of Physical and Geometric Factors on the Impedance of Electrochemical Power Sources.
Abstract
Short-time transient behavior in the charge/discharge of small electrochemical power sources does not scale up for large systems. calculations are presented which show that a number of commonly neglected physical and geometric factors, such as the skin effect and the distributed network impedance characteristics of the individual cells and cell assemblies, can severely limit performance. The impedance of individual cells has been calculated over a wide range of frequencies 100-10th to the 8th Hz) using a modified semi-infinite strip-line model. The variables considered include the electrode and electrolyte conductivities, the electrolyte dielectric constant, the double-layer capacitance, and the distributed inductance and capacitance resulting from the cell geometry. Keywords: Impedance, Electrochemical Power Sources, Computer Modeling, Electrochemical Cells, Pulsed High Power Batteries.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1987
- Accession Number
- ADA183026
Entities
People
- B. D. Cahan
- E. B. Yeager
- M. L. Daroux
Organizations
- Case Western Reserve University