Offre de Thèse LRCS - Amiens
Updated : -0001.11.30Glass, glass-ceramic and ceramic sodium-based Solid Electrolytes for All-Solid-State Batteries
The goal of this collaborative PhD work is to explore the chemistry of inorganic glass, glass-ceramic and ceramic ionic conductors to be used as solid electrolytes for sodium based All-Solid-State Batteries, by exploring different synthesis routes and alternative compositions. A comprehensive study of transport and stability properties will be carried out in liaison with the structural features.
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PhD position LRCS - Amiens
Updated : 2023.05.15Multimodal Approach for the Study of the Dynamic Phenomena at the Origin of the Degradations in the Lix(NiMn)yO2 Cathodes of Li-ion Batteries (MultiVision-Bat)
During the charge and discharge cycles of Li-ion batteries, the electrode materials undergo chemical and mechanical transformations which are the cause of degradation leading to losses in capacity and greater risks of malfunction. These transformations appear at different scales in the electrodes, but it is at the scale of the primary crystals, where the lithium ions are inserted and diffuse, that the first phenomena arise. It is therefore crucial to study the lithiation dynamics in these primary grains. To do this, we propose here a multimodal approach based on the use of in situ characterization tools and methodologies to monitor in real time the electrochemical cycling at the nanometric scale of primary crystals. It will be a question of following, on the one hand, the evolution of the crystallographic properties via the new electronic diffraction techniques in TEM (4DSTEM and 3DED) and on the other hand, the modifications of the degrees of oxidation of the transition metals involved in lithiation via the absorption of X-rays (STXM) in synchrotron (SOLEIL). Our 2 in situ electrochemical cells will allow us to study the same samples in correlative mode leading to complementary maps of structural and chemical properties. The use of other techniques in TEM, such as aberration-corrected STEM imaging, as well as EDX and EELS spectroscopy, will provide a multi-scale global view of LiMnNiOx degradation mechanisms. Particular emphasis will be placed on the processing of spectral and diffraction data by recent methods of artificial intelligence, such as deep learning with the "Variational AutoEncoder (VAE)".
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PhD position LRCS - Amiens
Updated : 2023.03.233D-resolved computational modeling of mechano-electrochemistry in solid state batteries - DESTINY Marie Sklodowska-Curie Actions COFUND (H/F) – M/F
This PhD thesis aims to develop a deep understanding of ASSB (All Solid-State Batteries) working principles by developing and experimentally validating a unique computational model accounting in 3D for the composite electrode microstructure and its corresponding evolution upon electrochemical cycling.
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PhD position LRCS - Amiens
Updated : 2023.03.23Digital twins for lifetime enhancement of sodium ion and solid-state battery cells
We are offering a PhD position, in the context of the BATMAN project (funded through the “PEPR Batteries” Research Program), aiming at developing, validating and demonstrating a digital twin of the function of SIB (sodium ion battery and SSB (solid-state battery) cells.
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PhD Thesis LRCS - Amiens
Updated : 2023.03.17Computational modeling of lithium ion battery electrode manufacturing
We propose here a PhD thesis to work on the computational modeling of the manufacturing process of LIB electrodes. The intended computational modeling will be physics-based and will be supported on Coarse Grained Molecular and Particle Dynamics, as well as on the Discrete Element Method, by using software like LAMMPS.
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PhD position LRCS - Amiens
Updated : 2023.03.17Digital twins for the manufacturing optimization of sodium ion and solid-state batteries
In the context of the BATMAN project (funded through the “PEPR Batteries” Research Program), with the goal of developing, validating and demonstrating a digital twin of the manufacturing process of SIB (sodium ion battery) and SSB electrodes (solid-state battery).
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PhD position LRCS - Amiens
Updated : 2023.03.15Supra- and Macro-molecular materials for organic battery
Synthesis and characterization of new macromolecular materials as electrodes in organic batteries with a view to integrating them into complete systems. The thesis project consists of two parts: the synthesis and characterization of the new materials (organic synthesis, NMR, XRD...), and the formulation and electrochemical testing of the newly composite electrodes obtained.
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Updated : 2023.02.01Multiphase Segmentation for Tomography data using Convolutional Neural Network and Morphological Study of Cathode Secondary Particles
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Updated : 2022.03.16Effet de la microgravité sur l'impression 3D de batteries lithium-ion
Ce sujet de thèse s'inscrit dans la stratégie de l'Agence Spatiale Européenne pour permettre aux astronautes de la station spatiale (ISS) et, à plus long terme, à ceux des futures missions longues et colonies, de pouvoir fabriquer, in situ, des pièces de rechange pour matériel de bord.
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