Overview of the micro focus ID13 ESRF beamline, and X-ray characterizations of solid-state batteries in operando conditions
| When |
May 27, 2025
from 11:00 to 12:00 |
|---|---|
| Where | Amphi E |
| Attendees |
François Liénard |
| Add event to calendar |
vCal
iCal
|
This seminar will be divided in two parts. In a first part, I will present the European Synchrotron Radiation Facility in term of history, statistics, scientific organization and research applications with X-rays. I will illustrate the operation of the ESRF through the micro-focus ID13 beamline where I present its main components dedicated to the X-ray beam. I will show the broad scientific overview addressed by this beamline before to mention the strengths of the available environments. In a second part, I will focus on my research activities related to solid-state battery (SSB) characterizations. Indeed, SSBs are expected to be one of the next generations of electrochemical energy storage systems. They exhibit high thermal stability and a high energy density, they are compatible with the “holy grail” metallic lithium anode and they are safer than classical Li-ion batteries. Nonetheless, their performances can be reduced because of mechanical stress heterogeneities occurring during lithiation/delithiation leading to non-uniform lithium plating, cracks or dendrite formations. To date, the reasons for spatio-temporal heterogeneous distributions of stresses are still little understood in SSBs. That is why we want to probe precisely mechanical stresses in operando conditions with X-ray diffraction while applying a necessary stack pressure. To do so, we have built a new device that I will present here. We achieve a high-spatial resolution by using the X-ray nano-beam (50-100 nm) of ID13. In this seminar, I will present the constraints imposed on the device by this experiment: air tightness, X-ray transparency, device mass, controlled pressure, set-up geometry. Then, I will explain how to extract the phase, micro-structure and the stress from the X-ray diffraction data and Iwill illustrate the method capabilities with the first results.