Ex-Situ Cell with Positioner for XRD Measurements in an Inert Atmosphere

Abstract

This paper describes the construction of a hermetically insulated cell for post-mortem research of electrode materials of electrochemical power sources. The first part specifies the problems of XRD characterization, followed by a description of the cell solving problems with hermetic insulation and distortion of diffraction patterns. Then, a positioning system for sample displacement error correction is described and tested on the example of the Al2O3 powder standard. Finally, the measurement procedure using the constructed device on the example of a graphite electrode of the Li-ion cell is demonstrated.

Mathematical and Physical Analysis of Pressure Gradient in the Experimental Chamber for Subsequent Comparison with Optical Methods

“…The highest velocity occurs at around 40 s, when it reaches a value of slightly over Mach 3. Thereafter, the pressure difference between the two chambers decreases due to pumping, and thus the Mach number gradually decreases (Figure 6) (15,16,17). Figure 6.…”