An Innovative 500 W Alkaline Water Electrolyser System for the Production of Ultra-Pure Hydrogen and Oxygen Gases

This paper communicates on an innovative, laboratory size alkaline water electrolyser (AWE) system, capable of efficiently producing ultra-pure hydrogen and oxygen gases. The system is composed a zero-gap, bipolar-electrode stack, equipped with polymer-based membrane, along two drying columns for effective purification H2 O2 gaseous products. An optimal electrochemical efficiency the stack provided through employment catalytically activated, extended surface-area nickel foam electrodes. Laboratory examinations included series galvanostatic AWE alternating current (a.c.) impedance (single cell) experiments. Complementary covered catalyst’s surface topography analysis by combined SEM (Scanning Electron Microscopy) EDX (Energy Dispersive X-ray Spectroscopy) techniques chromatographic evaluation purity