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Updated: Jun 18, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
In situ heating cell for temperature dependent transmission x-ray absorption spectroscopy (XAS) measurement with a
S Praetz1, D Grötzsch1, C Schlesiger1
1Technische Universität Berlin, Institute of Optics and Atomic Physics, Sekr. EW 3-1, Hardenbergstraße 36, 10623 Berlin, Germany.
Abstract:
For the investigation of spin crossover (SCO) complexes by x-ray absorption spectroscopy (XAS) measurements in the tender to hard x-ray regime, a transmission heating cell has been developed. Some SCO complexes show a spin transition at certain temperatures above room temperature (RT). To measure a reliable hysteresis curve, high temperature stability (preferably <0.5 °C) as well as minimal overheating of the setpoint temperatures (<1 °C) has been achieved. The cell is designed for use in our von Hámos XAS laboratory spectrometer. The SCO complex [Fe(bzimpy)2](ClO4)2 · 0.25H2O was investigated as a first proof-of-principle experiment. In situ measurements up to 250 °C were carried out, showing the characteristic spin transition of the SCO complex during heating. Further XAS measurements were conducted at beamline BL10 of the DELTA storage ring, which demonstrated the feasibility of in situ measurements during a continuous temperature ramp with our heating cell. The current temperature limit of the cell is 500 °C when used in vacuum. Hence, the cell can also be used for other sample systems, such as thermoelectric materials, which are frequently investigated in this temperature regime.
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