Investigation of the contact pressure on the product gas quality in alkaline membrane electrolysis

In the context of the energy transition, hydrogen is an important energy storage medium that is currently already an important raw material. Alkaline membrane electrolysis uses low-concentration potassium hydroxide solution as an electrolyte, but is currently still in the development stage. In order to prevent mixing of the product gases in the cell, the hydrogen and oxygen sides are separated in a cell by an anion-conducting membrane. The membrane should have a low resistance to ion exchange and at the same time prevent the passage of gas.

In this thesis, the contact pressure is to be investigated with regard to product gas quality and performance. For this purpose, specially synthesized catalysts are applied to porous transport layers using an air-brush gun. Various commercially available membranes are also used as part of these investigations.