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

Boguslaw Pierozynski, Tomasz Mikolajczyk, Boguslaw Wojciechowski and Mateusz Luba
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Boguslaw Pierozynski: Department of Chemistry, Faculty of Environmental Management and Agriculture, University of Warmia and Mazury in Olsztyn, Lodzki Square 4, 10-727 Olsztyn, Poland
Tomasz Mikolajczyk: Department of Chemistry, Faculty of Environmental Management and Agriculture, University of Warmia and Mazury in Olsztyn, Lodzki Square 4, 10-727 Olsztyn, Poland
Boguslaw Wojciechowski: Bob Energetyk Ltd., Jutrzenki 94 Street, 02-230 Warsaw, Poland
Mateusz Luba: Department of Chemistry, Faculty of Environmental Management and Agriculture, University of Warmia and Mazury in Olsztyn, Lodzki Square 4, 10-727 Olsztyn, Poland

Energies, 2021, vol. 14, issue 3, 1-11

Abstract: 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 of a zero-gap, bipolar-electrode stack, equipped with a polymer-based membrane, along with two drying columns for effective purification of H 2 and O 2 gaseous products. An optimal electrochemical efficiency of the electrolyser stack is provided through the employment of catalytically activated, extended surface-area nickel foam electrodes. Laboratory electrochemical examinations of the electrolyser included a series of galvanostatic AWE and alternating current (a.c.) impedance (single cell) experiments. Complementary examinations covered catalyst’s surface topography analysis by combined SEM (Scanning Electron Microscopy) and EDX (Energy Dispersive X-ray Spectroscopy) techniques along with chromatographic evaluation of the purity of hydrogen and oxygen products.

Keywords: alkaline water electrolyser; AWE; Pd-modified Ni foam cathode; hydrogen and oxygen purification (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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