Electrolysers

Abstract

An electrolyser 1 stack with an electrically non-conductive separator is described. The electrolyser 1 includes an inlet 4 for receiving electrolyte, a first outlet 6A, and second outlet 6B. Each cell includes a cathode 30A and 44A, 44B,...44H and an anode 42A, 42B..., 42H and 30B. The cathode and anode are formed from an electrically conductive porous material with a plurality of intersections (such as a metal mesh). An electrically non-conductive separator is positioned between the cathode and the anode in the stacking direction. An electrically non-conductive housing 46A, 46B…46I substantially surrounds the cathode, the anode, and the separator of the respective cell. Each housing 46A, 46B, … 46I includes a cell inlet 54 in fluid communication with the electrolyser inlet 4 and with the pores of the cathode and the anode of the respective cell, a first cell outlet on the cathode-side of the separator in fluid communication with the first electrolyser outlet 6A, and a second cell outlet 58 on the anode-side of the separator in fluid communication with the second electrolyser outlet 6B. The electrolyser may be used in the production of hydrogen and oxygen,

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