ELECTROCHEMICAL-BEHAVIOR OF COPPER, LEAD, AND BISMUTH SOLID COMPOUNDSAND THEIR TERNARY MIXTURES AT SOLID-STATE AT A CARBON-PASTE ELECTRODEWITH ELECTROLYTIC BINDER - APPLICATION TO THE STUDY OF THE HIGH TRANSITION-TEMPERATURE SUPERCONDUCTOR BI-0.7-CENTER-DOT-PB-0.3-CENTER-DOT SR-CENTER-DOT-CA-CENTER-DOT-CU-1.8-CENTER-DOT-O-X

The electrochemical behaviour of solid species of different oxidation states of copper, lead, and bismuth and their ternary mixtures is stud ied by scan voltammetry using a carbon paste electrode with electrolyt ic binder and electroactive compound incorporated (CPE-EB-ECI). The el ectrolytic binder was a 10 N KOH solution, the scan potential range wa s between +0.50 and -1.50 V (see), and the scan rate was O.5 mVs(-1). The obtained electrochemical voltammograms were employed to elucidate the corresponding ion electrochemical transformations. In this way, th e obtained conclusions were utilized to characterize the different pea ks of the electrochemical profile of the high transition temperature s uperconductor Bi-0.7. Pb-0.3. Sr . Ca . Cu-1.3. O-x.