Reversible electrochemical doping of conjugated polymers,...

Details Reversible electrochemical doping of conjugated polymers,... Reversible electrochemical doping of conjugated polymers,...

H - Electricity

01

M

319/75, 204/81,

H01M 10/40 (2006.01) H01B 1/12 (2006.01) H01L 51/40 (2006.01) H01M 10/36 (2006.01)

Patent

CA 1168701

ABSTRACT OF THE DISCLOSURE Conjugated polymers are doped with ionic dopant species to a preselected room temperature electrical conductivity ranging from that characteristic of semi- conductcr behavior to that characteristic of metallic behavior, by means of reversible electrochemical dop- ing 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 us d 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 electrode.

371175

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