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PhD Thesis on the multimodal study of the micro-structure of secondary particles of rich Li cathode

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Français - Anglais

Date Limite Candidature : vendredi 2 juillet 2021

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General information

Reference : UMR7314-ARNDEM-004
Workplace : AMIENS
Date of publication : Friday, June 11, 2021
Scientific Responsible name : Arnaud Demortière
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 4 October 2021
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly

Description of the thesis topic

The thesis student will carry out syntheses of secondary cathode particles for rich Li batteries. The objective is to master the formation of porous particles and their morphologies in order to study the impact on the electrochemical cycling properties. Systematic analysis with a classical and statistical approach of the micro-structures will be performed using different characterization techniques. Synchrotron X-ray tomography will be used to report the 3D morphology of the particles and to quantify their porosity. The reconstruction, segmentation and 3D analysis will be done using different software used and developed in our team. The coupled use of ion polishing and SEM imaging techniques will also be useful to evaluate the micro-structure on a large number of secondary particles. Finally, the 4D-STEM technique allowing to realize electron diffraction maps in TEM will be able to complete the previous studies by focusing on the crystallographic properties of these cathode materials.

Work Context

The thesis will take place mainly at the LRCS in Amiens and on occasional missions of several months at the ICMCB in Bordeaux.

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