Chercheur contractuel F/H en diagnostic des batteries lithium sodium

Université de Technologie de Compiègne is recruiting a contract researcher in lithium and sodium battery diagnostics at the Roberval Laboratory, Mechanical Engineering Department (IM).

This recruitment is funded by the French National Research Agency (ANR) as part of the HIPOBAT project of the PEPR Batteries (reference ANR-23-PEBA-0008). More information on the PEPR website: .

Mission

You will contribute to the development of monitoring tools for understanding the performance degradations of lithium-ion and sodium-ion batteries.

Main activities

· Develop an equivalent electrical circuit (digital twin) whose parameters can be continuously adapted with the aging of the batteries.

· Establish the links between the parameters of this digital twin, performance and electrochemical phenomena.

· Propose non-invasive diagnostic methods based on this digital twin.

· Develop algorithms to speed up or standardize the determination of the parameters of this digital twin and, therefore, to allow rapid diagnosis.

· Collaborate with project partners for degradation analysis, for the development of new diagnostic approaches and to validate the proposed methods.

· Analyze the batteries of the HIPOBAT project, especially during their aging.

· Publish results in peer-reviewed journals.

Scientific background

Started at the end of 2024, the HIPOBAT ( High-Power Batteries ) project aims to develop very high-power batteries (full charges or discharges in a few minutes), as well as the models and control strategies that allow their safe operation. Twelve laboratories in Germany and France are working together towards these goals, with a particular focus on batteries using solid electrolyte, known as \"all-solid-state batteries\". Nevertheless, lithium-ion and sodium-ion batteries with liquid electrolyte are also being studied to better understand the limitations associated