Publié: 04 avril 2024
Genf
100%
Durée indéterminée
Emplois trouvés sur le web
Land
Frankreich
Ort
91 - Essonne
Ort des Arbeitsplatzes
PALAISEAU-ROUTE DE SACLAY(FRA)
Domain
Research Innovation&Developpt
Art des Auftrags
Unbefristeter Vertrag
Erfahrung
Mindestens 6 Jahre
Profil der Bewerberin/des Bewerbers
More information
Aktivitäten
The Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO) of Paris-Saclay University is looking for a one-year postdoc researcher to work on this project.
As a Postdoctoral Research Engineer specialized in your field, you are expected to:
You are also required to interpret EIS results as follows:
Kontext & Umgebung
Lithium-ion batteries (LIB) are the primary energy storage technology for modern portable electronic devices and for electric vehicles. They can also provide stationary storage for renewable energies and for grid frequency regulation. LIBs are likely to remain a dominant technology for the foreseeable future, with an enormous increase in demand. In this context, there is a strong incentive for battery manufacturers to accelerate the design of LIBs with enhanced performance, safety, and recyclability. R&D efforts are thus pursued in different areas, such as novel LIB materials and fabrication processes. The development of high-fidelity performance models is another important research field, with the potential to shorten and reduce the cost of LIB design cycles.
To address this challenge, TotalEnergies and its affiliate SAFT are investigating a novel multiscale strategy aiming to predict accurately the initial and ageing performances of LIBs under various utilization scenarios. This strategy relies on microscale continuum models, where LIB electrodes are represented by their 3D microstructures. It requires a large amount of experimental characterization for model construction and validation, involving various material property measurements, electrochemical analysis, high-resolution imaging (e.g., FIB-SEM and X-ray tomography), post-mortem studies, as well as in-operando investigations of battery cycling. Electrical impedance spectroscopy (EIS) is a classical approach for battery electrode characterization. Actually, EIS is one of the most practical in situ analysis techniques, which can discriminate electrochemical processes by their time constant. In that sense, EIS is particularly interesting since it is a non-destructive investigation method, giving access to several electrochemical parameters of major interest in the battery field (charge transfer, passivation film, adsorption, corrosion, ionic diffusion, tortuosity...).
TotalEnergies is a global multi-energy company engaged in the production and supply of various forms of energy: oil and biofuels, natural gas and green gases, renewables, and electricity. Its 105,000 employees are committed to providing increasingly affordable, clean, reliable, and accessible energy to a wide audience. Present in over 130 countries, TotalEnergies places sustainability at the core of its projects and operations to contribute to the well-being of communities.