PhD in Materials Physics and Chemistry (M/F)

Job Description

Thesis Subject

Multiscale Operando Studies of Densification in All-Solid-State Batteries

All-solid-state batteries (SSBs) are a promising approach to increasing energy density and improving the safety of Li-ion batteries. Among solid electrolytes, thiophosphates show strong potential, but their performance is highly dependent on their densification and on the quality of the interfaces formed during processing.
This PhD project aims to understand, across multiple length scales, the densification mechanisms of thiophosphate solid electrolytes and composite electrodes, as well as the evolution of their microstructure, interfaces, and electrochemical properties under pressure and during cycling. Particular attention will be paid to the influence of porosity and microstructure on the penetration and propagation of metallic lithium.
Within the framework of the collaborative ANR-SoDense project, the work will combine experimental approaches carried out in laboratory facilities and at large-scale research infrastructures. In situ and operando structural and microstructural characterizations, performed across multiple length scales, will be used to establish relationships between processing and densification conditions, microstructure, and the electrochemical performance of all-solid-state batteries.
The overall objective is to contribute to a better understanding of the mechanisms limiting SSB performance and to the optimization of their processing routes, with a view toward their large-scale development and manufacturing.

Your Work Environment

The PhD candidate will be primarily based at the Institut Lumière Matière (ILM) and will work in a highly collaborative environment involving ILM, LEPMI in Grenoble, and the SOLEIL and ESRF synchrotrons.
At ILM, the candidate will use high-pressure presses for the densification and sintering of materials, as well as various characterization techniques, including Raman spectroscopy and diffraction. Research visits to partner large-scale facilities, in particular the PSICHE high-pressure beamline at the SOLEIL synchrotron, will provide opportunities to perform multi-technique in situ and operando experiments, including tomography.
We are looking for a highly motivated candidate with a background in physics, materials science, or materials engineering. A strong interest in experimental research and materials characterization is expected. Previous experience with high-pressure techniques will be considered an advantage, although it is not mandatory.

Compensation and benefits

Compensation

2300 € gross monthly

Annual leave and RTT

44 jours

Remote Working practice and compensation

Pratique et indemnisation du TT

Transport

Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€

About the offer

About the CNRS

The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.

CNRS

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