Determination of hydrogen gas evolution at electrodeposited nickel on silver, cupper and zinc electrodes in alkaline solution

ABSTRACT MS THESIS DETERMINATION OF HYDROGEN GAS EVOLUTION AT ELECTRODEPOSITED NICKEL ON SILVER, CUPPER AND ZINC ELECTRODES IN ALKALINE SOLUTION Mehmet Erman MERT DEPARTMENT OF CHEMISTRY INSTITUTE OF NATURAL AND APPLIED SCIENCES UNIVERSITY OF ÇUKUROVA Supervisor: Asst. Prof. Gülfeza KARDAŞ Year: 2005, Pages: 84 Jury: Asst. Prof. Gülfeza KARDAŞ Prof. Dr. Birgül YAZICI Prof. Dr. Melih BAYRAMO?LU In this study, hydrogen gas evolution has been studied in basic solution at bare and electrodeposited nickel on silver, copper and zinc electrodes. For this purpose, cathodic polarization curves and Nyquist plots at different hydrogen evolution potentials obtained using three-electrode technique. To obtain hydrogen over potentials for these electrodes, electrolysis system has been used. In addition, the hydrogen gas volume was measured evaluated from the cathode at constant 3 V potential using electrolysis systems. From obtaining results, hydrogen over potential decreased at electroplated nickel electrodes. Key Words: Hydrogen, Nickel Coating, Over Potential, AC Impedance II