Katalysatoren und Elektroden für die alkalische Wasserelektrolyse

Abstract

In this thesis, electrodes coated with Raney nickel and molybdenum catalysts are tested for alkaline water electrolysis. The aim is to characterize the powders. Two different powders are examined, a reference powder (R powder) and a powder developed by KSG (B powder). Uncoated and coated samples were tested in a half-cell measurement with a reference electrode. Before the measurements, the coated samples were activated in alkaline solution. The following measurements were carried out: Polarization curves (Pol), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The polarization curves, the IR-corrected polarization curves, the reaction surface as surface factor, the charge and the double layer capacity are evaluated.