ICP-Massenspektrometer

1pc ICP Mass Spectrometer

The department of the Fraunhofer ICT "Applied Electrochemistry" deals with the

As part of the joint research project "hyBit" (hydrogen for Bremen's industrial

transformation) with the optimization of the service life of PEM water electrolysers.

To this end, fundamental work on the understanding of the occurring

degradation mechanisms under different operating conditions at a

location in Pfinztal, Germany, already existing test rig suitable for PEM electrolysis

Short batches with a power of approx. 8kW. Some of these

Degradation mechanisms lead to decomposition of the materials used in the stack

Materials. Decomposition is particularly critical for performance losses in PEM electrolysis

of the catalyst at the anode (usually Ir, IrOx and sometimes Ru) and cathode

(mostly Pt). With the help of a suitable mass spectrometer with inductively coupled

plasma (ICP-MS) is intended to provide the first qualitative and quantitative detection of these

Metal ions in the high-purity process water at the outlet of the PEM electrolysis

short stacks. Again and again in circles and deionized

On the one hand, process water serves as a coolant and at the same time serves as a reactant for electrolysis. With

The ICP-MS to be procured should also be able to detect titanium, which is used in the

Decomposition of the catalyst substrate or the GDL (gas diffusion layer)

can be released. The aim of the project is to achieve the highest possible temporal resolution.

Measurement of the metal ions in order to reduce the occurrence in a PEM electrolyser.

Degradation mechanisms depending on different operating conditions

Associate.

The determined metal ion concentrations are used, among other things, for the first time

Description of the catalysts released in a larger PEMEL system and

as the first comparative values for other stacks and materials.