The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 1984
Filed:
Dec. 29, 1980
Alan G MacDiarmid, Drexel Hill, PA (US);
Alan J Heeger, Wynnewood, PA (US);
Paul J Nigrey, Philadelphia, PA (US);
University Patents, Inc., Norwalk, CT (US);
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.