| Electrochemical Behaviour of Cobalt Oxide in Carbamide Melts Sergei Devyatkin1; Svetlana Kochetova2; Alexandr Pisanenko1; Ludmila Bogdanovich1; 1INSTITUTE OF GENERAL AND INORGANIC CHEMISTRY, Kiev, Ukraine; 2V.I. VERNADSKY INSTITUTE OF GENERAL AND INORGANIC CHEMISTRY OF THE NATIONAL ACADEMY OF SCIENCES OF UKRAINE, Kyiv, Ukraine; PAPER: 12/Molten/Regular (Oral) SCHEDULED: 12:45/Wed. 30 Nov. 2022/Game ABSTRACT: Carbamide melts have found applications as electrolytes for electrochemical treatment of metals [1, 2]. The possibility of electrodeposition of cobalt from carbamide melts at 408 K has been examined for tungsten as an example. When studying the electrochemical behaviour of cobalt oxide in molten carbamide, it can be concluded that maximum limiting currents are typical of the system (NH2)2CO-CoO. Cobalt coatings on nickel cathodes have been obtained by the electrolysis of the molten system (NH2)2CO-CoO at current densities of 20-30 mA/cm<sup>2</sup>. References: [1] Klochko M.A., Strelnikov A.A. 1960. Study of electrical conductivity and viscosity in the system ammonium nitrate – urea. In: Russian Journal of Inorganic Chemistry. Volume 10. p. 2483-2490. [2] Tumanova N.Kh., Devyatkin C.V. Boiko O.I. 2004. Refractory metals electrochemistry in ion and ion–organic melts. In: Ukrainian Chemical Journal. Volume 7/8. p. 78-84. |
