Missions

At CNRS, in the CEMHTI laboratory (Conditions Extrêmes et Matériaux : Haute Température et Irradiation) in Orléans, the MATRMAG team - "Materials and Magnetic Resonance" of the CEMHTI-CNRS laboratory (UPR 3079) is recruiting a researcher.

As part of the European project ULTRABAT (BATTERY2030+), you will be responsible for characterizing the lithium transfer at the interface of lithium battery cathode materials using NMR.

The ULTRABAT project focuses on the transfer of ionic and electronic charges at the interface of materials, which are the cause of many limitations and degradation processes in batteries. The goal is to characterize the state of the interface, the mobility of lithium and electronic charges at this level, using materials with controlled morphology and surface state, through isotopic exchange techniques and/or homo/heteronuclear correlations. This study will be conducted in collaboration with specialists in microscopy, RX and optical methods, and modeling (DFT/molecular dynamics).

Activities

- Preparation and execution of NMR experiments on samples provided by collaborators.
- Preparation of electrode and electrolyte material mixtures enriched in 6Li and monitoring of isotopic exchange by NMR.
- Interpretation of results in collaboration with various partners, writing publications, and presenting results to the consortium.
- Processing and interpreting data.
- Publishing results and participating in conferences.
- Writing reports, technical documents, and scientific publications.

Skills

- Experience in solid-state NMR.
- Basic knowledge of electrochemistry or solid-state chemistry.
- Basic knowledge of DFT applied to NMR parameter calculations.
- Proficiency in the necessary computer tools for operating equipment and processing and analyzing data.
- Adherence to health and safety regulations in the field.

Work Context

CEMHTI is a CNRS laboratory (approximately 100 people) and hosts an NMR platform with 6 spectrometers (from 200 to 850 MHz) and a variety of MAS probes (from 7 to 0.7 mm) or static probes for imaging or diffusion, belonging to the national platforms INFRANALYTICS or RS2E. The European project ULTRABAT (5 M€) brings together a consortium including DTU (Denmark), Eu-XFEL (Germany), CNRS, and Collège de France, and is part of the European initiative BATTERY 2030+. The contract is renewable up to 30 months.

The researcher will be based at the high-temperature site of the laboratory, joining the "Materials and Magnetic Resonance" team.

Application deadline: 09/15/2024

Constraints and risks

Participation in events organized by the ULTRABAT consortium (biannual meetings) and in the production of deliverables for the European project.