A5071906190- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Extraction and Separation Processes
- Additive Manufacturing and 3D Printing Technologies
- Supercapacitor Materials and Fabrication
- Recycling and Waste Management Techniques
- Advanced battery technologies research
- Thermal and Kinetic Analysis
- Fault Detection and Control Systems
- Advanced Control Systems Design
- Catalytic Processes in Materials Science
- Conducting polymers and applications
- Polyoxometalates: Synthesis and Applications
- biodegradable polymer synthesis and properties
- Control Systems and Identification
- Transition Metal Oxide Nanomaterials
- Catalysis and Oxidation Reactions
- Electric and Hybrid Vehicle Technologies
- Electrochemical Analysis and Applications
- nanoparticles nucleation surface interactions
- Industrial Vision Systems and Defect Detection
- Non-Destructive Testing Techniques
- Electron and X-Ray Spectroscopy Techniques
- Semiconductor materials and devices
Laboratoire de Réactivité et Chimie des Solides
2016-2025
Université de Picardie Jules Verne
2016-2025
Réseau sur le Stockage Electrochimique de l'énergie
2016-2025
Centre National de la Recherche Scientifique
2016-2025
Observatoire Régional de la Santé et du Social
2014
École Nationale Supérieure de Chimie de Lille
2010
University of California, Santa Barbara
2010
Unité de catalyse et de chimie du solide de Lille
2010
Université de Rennes
2006
Université Toulouse III - Paul Sabatier
2005
We report that the room temperature cycling of CoO/Li cells involving two processes, reduction and growth a polymer/gel-like film at high low potentials, respectively, is extremely sensitive to voltage ranges with best results obtained when are fully discharged. The low-voltage process quite reversible over 0.02 1.8 V range sustained capacity about 150 mAh/g few hundred cycles. Within such potential barely evolving while it vanishes as oxidation increased above 2 V. From cyclic-voltammogram...
The electrochemical reactivity of tailor-made or CuO powders prepared according to the polyol process was tested in rechargeable Li cells. To our surprise, we demonstrated that CuO, a material well known for primary cells, and could reversibly react with 1.1 2 ions per formula unit, respectively, leading reversible capacities as high 400 mAh/g 3-0.02 V range. ability copper oxide-based cells retain their capacity upon numerous cycles found be strongly dependent on particle size, best results...
The unusual low-potential Li reactivity toward simple 3d-metal oxides can be accounted for by classical thermodynamic predictions and acido-basic considerations. Smith's scale, defined in solids reactions involving species exchange, is successfully used to check that, among the numerous oxides, basic ones such as MnO, FeO, CoO, NiO, CuO should reversibly react with lithium. Besides basicity criteria, we stressed that nanometric character of reduced composite electrode (e.g., metallic...
The use of the high energy Li-ion battery technology for emerging markets like electromobility requires precise appraisal their safety levels in abuse conditions. Combustion tests were performed on commercial pouch cells by means Fire Propagation Apparatus also called Tewarson calorimeter EU, so far used to study flammability parameters polymers and chemicals. Well-controlled conditions cell combustion are created such an apparatus with opportunity analyse standard decomposition/combustion...
To allow electric vehicles to be powered by Li-ion batteries, scientists must understand further their aging processes in view extend cycle life and safety. For this purpose, we focused on the development of analytical techniques aiming at identifying organic species resulting from degradation carbonate-based electrolytes (EC-DMC/LiPF(6)) low potential. As ESI-HRMS provided insightful information mechanism chronological formation ethylene oxide oligomers, implemented "gas" GC/MS experiments...
We report a systematic investigation of Na-based electrolytes that comprise various NaX [X=hexafluorophosphate (PF6 ), perchlorate (ClO4 bis(trifluoromethanesulfonyl)imide (TFSI), fluorosulfonyl-(trifluoromethanesulfonyl)imide (FTFSI), and bis(fluorosulfonyl)imide (FSI)] salts solvent mixtures [ethylene carbonate (EC)/dimethyl (DMC), EC/diethyl (DEC), EC/propylene (PC)] with respect to the Al current collector stability, formation soluble degradation compounds, reactivity towards sodiated...
A comparative and in-depth investigation on the reactivity of various Li-based electrolytes solid electrolyte interface (SEI) formed at graphite electrode is carried out using X-ray photoelectron spectroscopy (XPS), chemical simulation test, differential scanning calorimetry (DSC). The investigated include LiX (X = PF6, TFSI, TDI, FSI, FTFSI), dissolved in EC-DMC. SEI nature containing relatively new imide (LiFSI LiFTFSI) imidazole (LiTDI) salts are evaluated compared to those...
Actual parallel-plate architecture of lithium-ion batteries consists diffusion in one dimension between the electrodes. To achieve higher performances terms specific capacity and power, configurations enabling two or three dimensions is considered. With a view to build these complex three-dimensional (3D) battery architectures avoiding electrodes interpenetration issues, this work focused on fused deposition modeling (FDM). In study, formulation characterization 3D-printable...
Lithium-ion batteries (LIBs) have become ubiquitous power sources for small electronic devices, electric vehicles, and stationary energy storage systems. Despite the success of LIBs which is acknowledged by their increasing commodity market, historical evolution chemistry behind LIB technologies laden with obstacles yet to be unambiguously documented. This Viewpoint outlines chronologically most essential findings related today's LIBs, including commercial electrode electrolyte materials,...
Li-metal-based batteries are considered as the next alternative to Li-ion owing their high specific capacity and energy density. Alleviating use of liquid electrolytes, solid-state using polymer electrolytes have gained vast attention. However, Li-metal major concerns regarding non-total suppression dendrites reactivity Li metal with certain polymers like polycaprolactones polycarbonates, having main chain ester groups which alternatives PEO-based matrices. Herein we designed a robust...
The positive attributes of X-ray photoelectron spectroscopy to the field battery research is illustrated through study reaction mechanisms involved during electrochemical reduction/oxidation a metal oxide (MO) electrode vs Li. Through acquisition and interpretation various (Co 2p, Li 1s, O C 1s) XPS spectra charge discharge CoO/Li battery, we could confirm reversibility CoO → Co conversion process involving reversible formation/decomposition Li2O together with growth an organic layer. More...
X-ray photoelectron spectroscopy (XPS) was used to determine the nature and composition of electrode/electrolyte interfaces forming during cycling Li-based cells in ethylene carbonate:dimethyl carbonate electrolyte using a heat-treated stainless steel substrate as positive electrode. From classical analysis XPS C 1s, O F P 2p, Li 1s core peak spectra complemented by an unusual detailed interpretation valence spectra, we could follow, function cell history, evolution species constituting...
Currently, batteries are being both considered and utilized in a variety of large-scale applications. Materials sustainability stands as key issue for future generations batteries. One alternative to the use finite supply mined materials is renewable organic materials. However, before addressing issues regarding given electrode, fundamental questions relating structure-function relationships between components battery performance must first be explored. Herein we report synthesis,...
To better rule out the complex fire risk related to large format lithium ion cells, a detailed and systematic evaluation, both at component cell levels, could be an invaluable milestone. Therefore, combustion analysis was conducted for major single organic solvents their mixtures used in battery technology, oxygen rich lean environments using Tewarson calorimeter. Well controlled test conditions have enabled determination of key parameters governing induced hazards such as flash point, ease...
Abstract Among the 3D-printing technologies, fused deposition modeling (FDM) represents a promising route to enable direct incorporation of battery within final 3D object. Here, preparation and characterization lithium iron phosphate/polylactic acid (LFP/PLA) SiO 2 /PLA 3D-printable filaments, specifically conceived respectively as positive electrode separator in lithium-ion is reported. By means plasticizer addition, active material loading raised high possible (up 52 wt.%) while still...