Raphaelle Houdeville

Title of the project: Synchrotron powder diffraction on operando batteries at non-ambient temperature conditions

Supervisors and Host institution: Dr.François Fauth at ALBA-CELLS and Prof. M. Rosa Palacin at Insitute of Materials Science of Barcelona (ICMAB-CSIC)

In-situ and operando diffraction studies on batteries were very early identified as a precious tool to get a mechanistic understanding of the electrode materials deformation during the cycling. Indeed, they avoid the drawbacks related to ex situ studies related to the preparation of samples in different redox stages, which also involves some risk of the electroactive phase being altered (evolution of metastable phases, contamination by air or humidity, etc.). However, temperature is sometimes a key factor when cycling batteries, especially for systems with slow kinetics or materials presenting a phase transition. The aim of my project is to develop and test a thermalized in-situ cell with several electrochemical systems to assess its performance.

"Being part of DOC-FAM and MSCA allowed me to continue learning through various schools and seminars."

I was born and raised in Beauvais, a small city at the north of Paris in France. After graduating from high school, I obtained my chemical engineer degree from Ecole Supérieure de Chimie Organique et Minérale (ESCOM) in Compiègne (France) where I became interested in electrochemistry and more particularly in battery science. This brought me to do two internships in this field. One took place in 2016 in the University of Chalmers in Göteborg (Sweden) in the group of Kasper Moth-Poulsen and was focused on the synthesis of new fluorine-free salts for electrolyte. The other one was focused on the characterization of calcium electrolyte in the group of Alexandre Ponrouch at ICMAB in 2017. Thanks to the budget allocated in the DOC-FAM grant, I participated in the HERCULES European School in 2019 to get more knowledge on synchrotron and neutron techniques. As of my career objectives, I would like to continue in the academic world. Since I worked with several electrochemical systems and cells within my PhD I am not aiming at a topic in particular.

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