Complex impedance studies of lithium iodine batteries

Author

Schmidt, C.L. ; Skarstad, P.M.

Author_Institution

Promeon Div. Medtronic Inc., Mineapolis, MN, USA

Volume

5

Issue

8

fYear

1990

Firstpage

7

Lastpage

12

Abstract

Complex impedance spectra of conductivity cells containing iodine-poly-2-vinylpiridine cathode material has been taken by two- and four-probe techniques. The impedance spectra contain a current-independent bulk resistance in series with a current-dependent interfacial resistance. The current-dependent interfacial resistance has the characteristics expected of a charge-transfer resistance. Electronically blocked (lithium-lithium iodide) electrodes give the same result as nonblocked (stainless steel) electrodes. This is exactly what would be expected if the medium were an ionic conductor. Complex impedance spectra of lithium-iodine batteries show additional structure, as might be expected, but are consistent with results from the conductivity cells.<>

Keywords

electric impedance measurement; electrical conductivity measurement; iodine; lithium; primary cells; Li-I/sub 2/ battery; Li-LiI; Nyquist plot; batteries; blocked electrodes; charge-transfer resistance; complex impedance spectra; conductivity cells; current-dependent interfacial resistance; current-independent bulk resistance; equivalent circuit; four-probe techniques; implantable cardiac pacemaker; iodine-poly-2-vinylpiridine cathode; nonblocked electrodes; stainless steel electrode; two-probe techniques; Anodes; Batteries; Cathodes; Conducting materials; Conductivity; Electrodes; Fault location; Impedance; Lithium compounds; Voltage;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems Magazine, IEEE

Publisher

ieee

ISSN

0885-8985

Type

jour

DOI

10.1109/62.59263

Filename

59263