Batteries having conjugated polymer electrodes

Details Batteries having conjugated polymer electrodes Batteries having conjugated polymer electrodes

1980-12-29

1984-04-10

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

H01M 460

Patent

active

044421877

ABSTRACT:
Conjugated polymers are doped with ionic dopant species to a preselected room temperature electrical conductivity ranging from that characteristic of semiconductor behavior to that characteristic of metallic behavior, by means of reversible electrochemical doping procedures. The doping procedures are carried out in an electrochemical cell wherein the polymer to be doped is employed as one or both of the electrodes, and the electrolyte is a compound which is ionizable into the ionic dopant species. Upon operation of the cell, the polymer, if used as the anode, becomes doped with an anionic dopant species to a p-type material; or if used as the cathode, becomes doped with a cationic dopant species to an n-type material.
The electrochemical doping reactions and their reverse electrochemical undoping reactions are utilized as the charging and discharging mechanisms of novel lightweight secondary batteries which employ doped or dopable conjugated polymers as one or both of their electrodes.

REFERENCES:
patent: 3352720 (1967-11-01), Wilson et al.
patent: 3660163 (1972-05-01), Moser
patent: 4148976 (1979-04-01), Sekido et al.
Yoshimura, Molecular Metals, Edited by W. E. Hatfield, NATO Conf. Series VI, Materials Science, 1978, pp. 471-489.

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