Copper based electrodes in organic electrolyte solutions—III. The discharge mechanism of copper(II) sulphide in some organic solvents

✍ Scribed by G. Eichinger; H.P. Fritz

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 445 KB
• Volume: 20
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(75)85010-9

✦ Synopsis

Copper(I1) sulphide was prepared in diierent ways. It is shown, that by bringing elemental copper into solutions containing poly-sulphides or sulphur, or by a well-known step-wise thermal preparation method, relatively pure substances can be attained. Galvanostatic discharge curves, cyclic voltammograms and ESCA-spectra indicate, that the discharge of CuS leads directly to copper, without a defined, stable Cu,S intermediate. A second potential plateau often obtained in the discharge of pure CuS electrodes in organic solvents, should be due to a decomposition of the solvent or of solvent impurities. In propylene carbonate (PC) no second discharge plateau is observed.