Stage Master 2 LRCS - Amiens
Updated : 2025.02.05AI-Enhanced Phase Field Modeling for Lithiation Dynamics in Li-ion Battery Cathodes: A Data-Driven and Physics-Informed Approach
The performance, durability, and safety of lithium-ion batteries are intrinsically linked to the dynamics of lithiation and phase transformations in their cathode materials. The internship project aims to develop a novel methodology to study these dynamics at the microscopic scale, integrating Phase Field (PhF) modeling and machine learning approaches, such as Variational Autoencoders (VAE) and Physics-Informed Neural Networks (PINNs).
The intern will contribute to an advanced numerical framework that combines:
• Phase Field Modeling based on the Allen-Cahn approach to simulate lithiation dynamics in
realistic cathode particle morphologies.
• Machine Learning Approaches (VAE and PINNs) to optimize simulation efficiency, reduce
computational costs, and improve predictive capabilities.
Stage Master 2 LRCS - Amiens
Updated : 2024.10.16Derivatives of Na-thioantimonate as solid electrolytes for all-solid-state batteries
Today, the most competitive and reliable technology used in electrochemical storage systems is based on lithium (Li) and the use of ionic conductive liquids. Considering the rising cost of lithium raw materials, the risks associated with their supply (abundance, geographical localization…) and the use of flammable liquids, it is necessary to find and offer alternatives involving other metal components and greater safety. Sodium (Na)-ion all-solid-state batteries (Na-ASSBs) are seen as an interesting option, combining a more abundant, and cheaper element with the use of a solid ionic conductor (non-flammable).
Sulphur-based compounds are promising solid electrolytes. They are ductile, enabling good cold-pressed
electrolyte/electrode contacts, and highly conductive. Among them, compounds based on the Na3PnCh4 formula, with Pn and Ch as pnictogen and chalcogen elements, attract attention2. With phosphorus (P, element Pn) and sulphur (S, element Ch), sodium tetrathiophosphate Na3PS4 is probably the most studied Na-solid electrolyte (ionic conductivity around 10-4 S/cm). A great deal of research has gone into improving it, including doping and iso/alio-valent substitutions on both the Pn and Ch sites3. A remarkable development in this field has been the design of sodium thioantimonate Na3SbS4 with a conductivity of 1.1 x 10-3 S/cm, a low activation energy of 0.20 eV and good moisture stability4, unlike Na3PS4. To date, few studies have been carried out on Na3SbS4 derivatives.
The current project aims to explore Na3SbS4 phase by attempting to replace antimony (Sb) with bismuth (Bi, pnictogen element) in order to prepare Na3Sb1-xBixS4-type phases. Bismuth has never yet been proposed as substitute. The targeted materials will be synthesized by high-temperature reactions or by mechanochemistry and characterized in detail by various structural, microstructural and electrochemical techniques.
Research associate LRCS - Amiens
Updated : 2024.10.09Research associate (ingénieur de recherche) for Transmission Electron Microscopy (M/F)
The engineer will support research activities and scientific advancements in the field of electron microscopy by utilizing the innovative capabilities of the ultra-fast, low-dose Transmission Electron Microscope (Spectra 200, ThermoFisher), newly installed at the electron microscopy platform of the UPJV. Involved in implementing analytical protocols and imaging techniques, the engineer will develop new methodologies in collaboration with LRCS researchers and networks (RS2E and A2U, etc.). The engineer will use various TEM-related techniques, including IDPC-STEM, 4D-STEM, as well as EDS and EELS, to study the ultrastructure and composition of materials. The engineer will participate in the development and optimization of in situ and operando observation methodologies for various materials, particularly those sensitive to electron beams, as well as air-sensitive materials, and will
ContactStage Master 2 LRCS - Amiens
Updated : 2024.09.27New electroactive transition metal complexes for aqueous organic redox flow batteries
The development of renewable energies is making stationary energy storage a necessity.
Although widely developed for small equipment and mobility, Li-Ion or Na-ion batteries are not
necessarily the most suitable for this type of application, for reasons of cost, safety and
recyclability. One of the most promising avenues is the development of redox-flow batteries, in
which energy storage takes place within electrolytes that are stored outside the electrochemical
cell. This makes it possible to decorrelate the power and capacity of the electrochemical system.
Classically, electroactive species are dissolved in either aqueous or non-aqueous media, the most
widely developed being all-vanadium redox-flow systems (VRFB). Recently, a revival of these
systems has been enabled by the use of electroactive organic molecules in aqueous electrolytes.
Although many advances have been made, molecules of potential interest for posolytes remain
scarce and some improvement can be made for negolytes.
The aim of the proposed MASTER 2 Internship is to develop prepare and characterize new
transition metal complexes soluble in aqueous media and which could be used for the formation
of redox-flow batteries electrolytes. The study will consist of (1) the selection and/or
modification of ligands for the complexation of the transition metals (2) the study the formation
of the complexes and their electrochemical properties (3) evaluate their solubility and stability
in aqueous electrolytes.
PhD Thesis LRCS - Amiens
Updated : 2024.02.21Synthesis of organic tailor-made macromolecular materials for solid organic battery
Over the past few decades, the world has witnessed a revolution in energy storage development:
Li-ion batteries. However, this rapid progress also comes with a major challenge in the context of
sustainable development, namely compensating for the limited availability of mineral materials and the
energy cost of their extraction from the earth's crust. Through this PhD Scholarship, we are seeking to
promote the use of a new generation of organic materials in order to offer fewer impacting alternatives for energy storage. The potential of organic chemistry is immense, thanks to low energy costs and rich and versatile synthetic route that allow the creation of tailor-made organic materials.1,2 Despite these
advantages, organic materials do encounter some obstacles, such as their solubility in organic electrolytes and their low conductivity, necessitating respectively electrolyte engineering and the excessive use of carbon black.
Updated : -0001.11.30
Offre de Post-Doctorat
Master Thesis Project LRCS - Amiens
Updated : -0001.11.30Feasibility study on the cycling of organic materials using SEM operando
As the observation of micro to nano-scale evolution such as formation of SEI, CEI, dissolution,
precipitation processes can be done by Scanning electron Microscopy (SEM) due to its good special
resolution, we plan to perform in-situ SEM operando cycling using home-made electrochemical cells
to perform real-time morphological (dissolution, crack formation, SEI …) and chemical investigation.
However, such type of experiments is a challenge to be done on organic materials due to their
possible reactivity under the electron beam and in liquid electrolyte as the SEM chamber is under high
vacuum and classical electrolyte (EC/DMC …) tend to be too volatile. The master student will have to
test different electrolytes (EC/PC, glyme, ionic liquid …) to find a suitable and representative one for
in-situ experiments as well as test the reactivity of the organic materials in order to perform the first
SEM-operando cycling for organic compounds.
For this project, you should have an interest in material chemistry, molecular materials,
electrochemistry and electron microscopy. Previous experience of material synthesis and
characterisation by spectroscopy would be beneficial. English language skills as well as writing and
speaking skills and team working abilities are highly recommended.
Master Thesis Project LRCS - Amiens
Updated : -0001.11.30Integration of chalcogenide glasses and glass-ceramics in all-solid sodium batteries
The internship project concerns the integration, in an all-solid state battery, of solid vitreous and chalcogenide glass-ceramic electrolytes that conduct Na+ ions, which have already been identified and characterised in the two laboratories. Sodium is one of the most abundant elements and is much cheaper than lithium.
The trainee will be required to reproduce the mechanosynthesis of glasses and glass-ceramics, in order to obtain sufficient electrolytes for the cells. These will be characterised by XRD and DSC in order to verify their nature, amorphous or partially crystallised, and to identify the phases that have precipitated. The conductive properties of the materials will be studied using complex impedance spectroscopy. Half-cells and complete cells will be assembled and their electrochemical performance evaluated.
Stage Master 2 Lrcs - Amiens
Updated : -0001.11.30Synthesis and characterization of aromatic heterocyclic compounds for positive electrode materials
we are seeking for a motivated and dynamic trainee who will be tasked with i) synthesising new electroactive molecules, ii) studying their physico-chemical properties and ii) determining their electrochemical properties with a view to their use as positive electrodes. For this project, you should have an interest in organic chemistry, molecular materials and electrochemistry. Previous experience of organic synthesis and characterisation by spectroscopy is essential. In addition, English language skills as well as writing and speaking skills are highly recommended.
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Updated : -0001.11.30Synthesis of charge-transfer complexes using ball-milling and in-deep characterization using electron microscopy and electrochemistry
[] We are looking for a motivated and dynamic trainee for a 6-months 2nd-year master internship.
The aims of this project are i) synthesising charge-transfer complexes using ball-milling, ii) studying their physico-chemical properties and iii) determining their electrochemical properties with a view to their use in ion-battery. A specific attention will be paid to the characterization of such materials using electron microscopy (SEM, TEM) and associated techniques (EDX, EELS).
Stage Master 2 LRCS - Amiens
Updated : -0001.11.30Synthesis of Macromolecules for Organic Batteries
The objective of this master's thesis is to meticulously follow each stage of this highly innovative project, from synthesis to the final characterization of the battery. The master's student will be responsible for studying and fully characterizing the new organic macromolecules as electroactive materials for energy storage. For this project, the ideal master's student should possess a strong background in organic chemistry, with experience in polymer synthesis being a valuable asset. Proficiency in electrochemistry is also desirable. Applicants must demonstrate a high level of motivation and effective communication skills, both in written and spoken English. The ability to work both as a team member and independently is essential.
Download information ContactStage Master 2 LRCS - Amiens
Updated : 2023.10.27Synthesis of Macromolecules for Organic Batteries
The objective of this master's thesis is to meticulously follow each stage of this highly innovative project, from synthesis to the final characterization of the battery. The master's student will be responsible for studying and fully characterizing the new organic macromolecules as electroactive materials for energy storage.
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PhD position LRCS Amiens - Renault Guyancourt
Updated : 2023.07.12Modeling and synthesis of 3D structured-polymer electrolyte to regulate Li dendrite formation during cycling of Li metal battery
Our primary goal is the understanding of Li dendrite formation at the interface between Li metal and 3D structured-polymer materials. Building upon this knowledge, we aim to design a novel polymer electrolyte that addresses the challenges associated with Li dendrite formation. To achieve our goals, we will employ a combined approach of experimental and theoretical methods. During the project, the Ph.D. candidate will synthesize and characterize the 3D structured polymer electrolyte. In parallel, student will model the polymer electrolyte system by using state-of-art modeling solution.
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Offre de Thèse LRCS - Amiens
Updated : 2023.07.04Recyclage et valorisation du graphite des batteries lithium-ion usagées
Ce projet vise à recycler du graphite dans les batteries lithium-ion usagées et à explorer ses réutilisations pour les systèmes de stockage d'énergie. Ce projet de thèse comprend plusieurs volets:
- Etudier différentes méthodes de séparation du graphite par démontage direct des LIBs ou issu de la black mass
- Effectuer la purification du graphite et comprendre la relation entre les conditions de traitement et les défauts structuraux générés
- Modifier la structure du graphite pour répondre aux besoins des différentes applications
Durant ce projet de thèse, l'étudiant(e) va essayer d'expliquer le mode de défaillance du graphite usagé, de clarifier le mécanisme d'élimination des impuretés et d'établir les critères pour évaluer la qualité du graphite recyclé.
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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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