A5033922371- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- MXene and MAX Phase Materials
- Advanced Battery Technologies Research
- Conducting polymers and applications
- Advanced Memory and Neural Computing
- Fuel Cells and Related Materials
- Force Microscopy Techniques and Applications
- Electrochemical Analysis and Applications
- Machine Learning in Materials Science
- Electron and X-Ray Spectroscopy Techniques
- Transition Metal Oxide Nanomaterials
- Ionic liquids properties and applications
- Inorganic Chemistry and Materials
- Electronic and Structural Properties of Oxides
- Semiconductor materials and devices
- Membrane-based Ion Separation Techniques
- Graphene research and applications
- Analytical Chemistry and Sensors
- Extraction and Separation Processes
- Electrochemical sensors and biosensors
- Ferroelectric and Negative Capacitance Devices
- Concrete Properties and Behavior
Université de Lille
2024-2025
Centre National de la Recherche Scientifique
2012-2025
Université Polytechnique Hauts-de-France
2024-2025
Institut d'électronique de microélectronique et de nanotechnologie
2024-2025
Réseau sur le Stockage Electrochimique de l'énergie
2013-2025
Oak Ridge National Laboratory
2018-2024
Oak Ridge Associated Universities
2020-2021
Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux
2012-2017
Université Toulouse III - Paul Sabatier
2012-2017
Université de Picardie Jules Verne
2015-2017
Electrochemical quartz crystal microbalance (EQCM) and cyclic voltammetry (CV) measurements were used to characterize ion adsorption in carbide-derived carbon (CDC) with two different average pore sizes (1 0.65 nm), from neat solvated 1-Ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (EMI-TFSI) electrolytes. From the electrode mass change EMI-TFSI, it was shown that one net charge stored corresponds almost single at high polarization; case, no ion-pairing or screening by co-ions...
Enhancing the energy stored and power delivered by layered materials relies strongly on improved understanding of intricate interplay electrolyte ions, solvents, electrode interactions as well role confinement.
Identifying and understanding charge storage mechanisms is important for advancing energy storage. Well-separated peaks in cyclic voltammograms (CVs) are considered key indicators of diffusion-controlled electrochemical processes with distinct Faradaic transfer. Herein, we report on an system separated CV peaks, accompanied by surface-controlled partial transfer, 2D Ti3C2Tx MXene water-in-salt electrolytes. The process involves the insertion/desertion desolvation-free cations, leading to...
Abstract Thin intermetallic Li 2 Te–LiTe 3 bilayer (0.75 µm) derived from 2D tellurene stabilizes the solid electrolyte interphase (SEI) of lithium metal and argyrodite (LPSCl, 6 PS 5 Cl) solid‐state (SSE). Tellurene is loaded onto a standard battery separator reacted with through single‐pass mechanical rolling, or transferred directly to SSE surface by pressing. State‐of‐the‐art electrochemical performance achieved, e.g., symmetric cell stable for 300 cycles (1800 h) at 1 mA cm −2 mAh (25%...
This study advances the development of flexible, sheet-type sulfide solid-state electrolytes (SSEs) for use in all-solid-state batteries, emphasizing important and previously insufficiently investigated role polymer binder entanglement. The molecular weight binders is pivotal crafting robust, freestanding SSE films. Our research uncovers a dual impact: higher bolster structural integrity films but elevate grain boundary resistance diminish critical current density, whereas lower...
This work focuses on the mechanisms of interfacial processes at surface amorphous silicon thin-film electrodes in organic carbonate electrolytes to unveil origins inherent nonpassivating behavior anodes Li-ion batteries. Attenuated total reflection Fourier-transform infrared spectroscopy, X-ray absorption and near-field scanning optical microscopy were used investigate formation, evolution, chemical composition layer formed Si upon cycling. We found that thickness solid/electrolyte...
The presence of structural water in tungsten oxides leads to a transition the energy storage mechanism from battery-type intercalation (limited by solid state diffusion) pseudocapacitance surface kinetics). Here, we demonstrate that these electrochemical mechanisms are linked mechanical response materials during protons and present pathway utilize coupling for local studies electrochemistry. Operando atomic force microscopy dilatometry is used measure deformation redox-active link nanoscale...
Electrochemical reactions and ionic transport underpin the operation of a broad range devices applications, from energy storage conversion to information technologies, as well biochemical processes, artificial muscles, soft actuators. Understanding mechanisms governing function these applications requires probing local electrochemical phenomena on relevant time length scales. Here, we discuss challenges opportunities for extending characterization probes nanometer ultimately atomic scales,...
Abstract Electrochemical energy storage is the key enabling component of electric vehicles and solar‐/wind‐based technologies. The enhancement stored requires detailed understanding charge mechanisms local electrochemical electromechanical phenomena over a variety length scales from atoms to full cells. Classical techniques, such as voltammetry, represent macroscopic properties, consequently do not allow extract important information about reactions, ions adsorption, intercalations,...
High-areal-capacity cathodes are needed for energy-dense solid-state batteries. Here, we demonstrate a bilayer polymer electrolyte design cycling 3–6 mAh/cm2 NMC811 composite cathodes. The comprises cross-linked poly(ethylene oxide) (PEO)-based layer and linear-PEO-based layer. former provides dendritic resistance, the latter seamless interface with cathode during cycling. Using single of either membrane led to severe shorting or extremely low Coulombic efficiency (CE) in first cycle....
Electrochemical ion-solvent cointercalation reactions are an avenue to reach improved kinetics compared the corresponding intercalation of desolvated ions. Here, we demonstrate impact different structural pillar molecules on electrochemical Li+ mechanism in expanded hydrogen titanate (HTO) electrode materials. We show that interlayer-expansion HTO with organic pillars can enable reactions. Their reversibility is drastically when non-cross-linking employed expand and separate host material's...
Abstract Electrochemical ion‐solvent cointercalation reactions are an avenue to reach improved kinetics compared the corresponding intercalation of desolvated ions. Here, we demonstrate impact different structural pillar molecules on electrochemical Li + mechanism in expanded hydrogen titanate (HTO) electrode materials. We show that interlayer‐expansion HTO with organic pillars can enable reactions. Their reversibility is drastically when non‐cross‐linking employed expand and separate host...
Abstract Reversible electrochemical intercalation of cations into the interlayer space 2D materials induces tunable physical and chemical properties in them. In MXenes, a large class recently developed carbides nitrides, low energy, high storage capacitance, reversible various have led to their improved performance sensing energy applications. Herein, coupled nanopore‐actuator system where an ultrathin free‐standing MXene film serves as nanopore support membrane ionically active actuator is...
Comparing the effect of a compatibilizer on crystallinity semicrystalline polymer blend and its individual components is facile way to predict location morphology compatibilizer.
Sulfide solid-state electrolyte (SE) possesses high room-temperature ionic conductivity. However, fabrication of the free-standing, sheet-type thin sulfide SE film to enable all-solid-state batteries deliver energy and power density remains challenging. Herein we show that argyrodite (Li 6 PS 5 Cl) can be slurry cast form free-standing films with low (≤5 wt%) loadings poly(isobutylene) (PIB) binder. Two factors contribute a lower areal specific resistance (ASR) SEs benchmarked pristine...
Atomic and molecular resolved atomic force microscopy (AFM) images offer unique insights into materials' properties such as local ordering, orientation, topological defects, which can be used to pinpoint physical chemical interactions occurring at the surface. Utilizing machine learning for extracting underlying parameters increases throughput of AFM data processing eliminates inconsistencies intrinsic manual image analysis, thus enabling creation reliable frameworks qualitative quantitative...