Principle

In a PEM electrolyser, the electrolyte consists of a proton-conducting membrane and water (PEM = Proton-Exchange-Membrane). When an electric voltage is applied, hydrogen and oxygen are formed. The PEM fuel cell generates electrical energy from hydrogen and oxygen. The electrical properties of the electrolyser and the fuel cell are investigated by recording a current-voltage characteristic line. To determine the efficiency, the gases are stored in small gasometers in order to be able to measure the quantities of the gases generated or consumed.

Benefits


Quantitive determination of all relevant parameters

Production of hydrogen and oxygen which can then be quantified

Storage of the produced gases in a "gas bar" for reuse


Tasks


Recording the characteristic line of the PEM electrolyser.

Recording the characteristic line of the PEM fuel cell.

Determination of the efficiency of the PEM electrolysis unit.

Determination of the efficiency of the PEM fuel cell.


What you can learn about


Electrolysis

Electrode polarisation

Decomposition voltage

Galvanic elements

Faraday’s law