After expulsion of hydrogen from a solid into the gas phase, gas chromatographic analysis is performed. The gas sample is fed into the column via a loop system and detected by means of a thermal conductivity detector (WLD).
A solid, such as a metal, ceramic, ore, or other inorganic material, is heated in a pulse furnace. An inert gas passes the released analyte gases through a series of probes. Hydrogen is converted by a catalyst and detected by non-dispersive infrared (NDIR) sensing elements.
High-tech applications such as fuel cells and solid-state storage systems rely on functional materials. In daily use, damage can occur that is made visible by means of high-resolution scanning electron microscopy (SEM). Building on the understanding of damage processes at the microstructural level, applications can thus be developed in an optimized manner.
Microstructural changes of materials occurring at different temperatures, pressures or atmospheres can be studied by in-situ X-ray diffraction (XRD). A special pressure-temperature chamber in the X-ray diffractometer allows the determination of material properties under exposure to a high temperature as well as under hydrogen atmosphere. By simulating environmental parameters, phase transformations can be controlled in a targeted manner. In this way, damage processes can be initiated, observed in-situ and also evaluated.
High Performance Center - Green Materials for Hydrogen, Hesse