Hydrogen is regarded as the energy storage medium of the future. It is generated electrochemically in electrolyzers on electrode surfaces. Hydrogen can also be produced on the material surface in galvanic processes or during cathodic corrosion protection - in this case, however, as an undesirable side reaction. In all cases, the hydrogen atoms formed can penetrate into the interior of the electrode material, causing hydrogen embrittlement. It is therefore important to determine the hydrogen permeation in the respective material experimentally.
The kit, which can be used to determine hydrogen permeation according to the ASTM G148 standard, consists of two potentiostats, the software and a Devanathan-Stachurski cell. The software contains a dedicated method and fit algorithms to automatically determine the diffusion coefficient of hydrogen. The system is also available as a multi-channel system for high sample throughput. The procedure with this kit is described in the Metrohm Application Note AN-EC-032.