A5026113057- Glass properties and applications
- Phase-change materials and chalcogenides
- Chalcogenide Semiconductor Thin Films
- Luminescence Properties of Advanced Materials
- Advanced Thermoelectric Materials and Devices
- Microwave Dielectric Ceramics Synthesis
- Nuclear materials and radiation effects
- Solid State Laser Technologies
- Pigment Synthesis and Properties
- Material Science and Thermodynamics
- Photonic Crystal and Fiber Optics
- Recycling and utilization of industrial and municipal waste in materials production
- Optical and Acousto-Optic Technologies
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Mineralogy and Gemology Studies
- Advanced Fiber Optic Sensors
- Material Dynamics and Properties
- Crystal Structures and Properties
- Topological Materials and Phenomena
- Cultural Heritage Materials Analysis
- Advanced Condensed Matter Physics
- Advanced ceramic materials synthesis
- Advanced Surface Polishing Techniques
- Transition Metal Oxide Nanomaterials
Centre Européen de la Céramique
2016-2025
Université de Limoges
2014-2024
Centre National de la Recherche Scientifique
2014-2024
École Nationale Supérieure de Céramique Industrielle
2011-2020
École Nationale Supérieure de Création Industrielle
2011-2020
Institut de Recherche sur les Céramiques
2012-2020
Institut de Chimie et des Matériaux Paris-Est
2011-2013
Université Paris-Est Créteil
2013
Université Paris Cité
2012-2013
Centre d’Élaboration de Matériaux et d’Études Structurales
2009-2012
Bulk-type all-solid-state inorganic Li-ion batteries can be prepared in one step few minutes using spark plasma sintering. The self-supported cells display thick composite electrodes of up to 800 μm, which offer high surface capacities 10 mAh.cm−2. Such technology is safer than classical and offers good electrochemical properties at temperatures above 100 °C. Detailed facts importance specialist readers are published as ”Supporting Information”. documents peer-reviewed, but not copy-edited...
Abstract A new path for the design of safe and efficient, all‐solid‐state Li‐ion batteries by spark plasma sintering (SPS) is considered. To reach a good electrochemical performance from such batteries, several parameters are investigated, as composite‐electrode formulation (active material/electrolyte/carbon ratio) influence on their compactness. The optimized to ensure ionic electronic percolation through composite electrode's volume. compactness has be sufficient guarantee mechanical...
Highly transparent tellurite glasses and glass‐ceramics based on the 85 TeO 2 –15 WO 3 composition (mol%) were produced by spark plasma sintering ( SPS ) from powders previously prepared conventional melt‐quenching technique then grinded. We report a study understanding of carbon contamination that is commonly observed this nonconventional which constitutes drawback for optical applications. First, influence particle size initial amorphous as well an additional pressureless step prior to...
Innovative transparent tellurite polycrystalline ceramics are demonstrated to be simply elaborated by full and congruent crystallization of the 75TeO2–12.5Bi2O3–12.5Nb2O5 parent glass. The low temperature glass elaboration its stability both enable preparation scalable tailor-shaped with high refractive index, transmission in near infrared range up 5.5 μm, promising mechanical/thermal properties. As a service our authors readers, this journal provides supporting information supplied authors....
An innovative way to produce chalcogenide glasses and glass-ceramics for infrared devices is reported. This new method of synthesis at low temperature combining ball-milling sintering by SPS (Spark Plasma Sintering) a technological breakthrough efficient glass-ceramics. technique will offer the possibility strongly decrease cost glasses. It also permit increase potential some glass compositions allowing their shaping desired dimensions.
Na-V-P-O glasses are promising cathode materials for sodium ion batteries, and yet a thorough understanding of their atomic scale behavior has so far been elusive. In this work we integrate structural electrochemical experiments with first-principles large-scale machine learning-accelerated molecular dynamics to elucidate quantitatively the interplay among structure, bonding, mobility on space time scales unprecedented extensions. We unravel existence broad V coordination distribution...
Na-V-P-O glasses are promising materials for sodium ion batteries, and yet a thorough understanding of their atomic scale behavior has so far been elusive. In this work we leverage structural...
We report a thorough experimental study on the microstructure, thermal behavior and thermoelectric properties of amorphous composition Cu15As30Te55 glass–ceramics related-compounds synthesized by using Spark Plasma Sintering (SPS) technique. Varying conditions SPS process enables synthesis composite glassy-crystalline samples with different crystal/glass ratios. Such treatments result in complex microstructures composed large glassy domains where nanocrystals metastable β-As2Te3 phase are...
The crystallization of the Bi0.5Nb0.5Te3O8 (7.14 Bi2O3–7.14Nb2O5–85.72TeO2) glass composition shows numerous original spherulite-like shape or "droplets" crystalline domains through bulk. Both SEM-EDS and microprobe measurements demonstrate that both these droplets glassy matrix present same composition. combination information obtained from various complementary techniques, electron probe microanalysis, Raman, SEM-EDS, then leads to identification spherulites as a new "anti-glass" phase....
An experimental and modeling study of glass–crystal Si<sub>10</sub>As<sub>15</sub>Te<sub>75</sub>–Bi<sub>0.4</sub>Sb<sub>1.6</sub>Te<sub>3</sub> composites.
β-As2Te3 belongs to the family of Bi2Te3-based thermoelectric alloys, a well-known class efficient materials and 3D topological insulators. It is demonstrated that substituting Sn for As enables hole concentration be tuned. These findings may open new avenues search more realization 3D-topological service our authors readers, this journal provides supporting information supplied by authors. Such are peer reviewed re-organized online delivery, but not copy-edited or typeset. Technical support...
Metastable β-As2Te3 (R3̅m, a = 4.047 Å and c 29.492 at 300 K) is isostructural to layered Bi2Te3 known for similarly displaying good thermoelectric properties around 400 K. Crystallizing glassy-As2Te3 leads multiphase samples, while could indeed be synthesized with phase purity (97%) by melt quenching. As expected, reconstructively transforms into stable α-As2Te3 (C2/m, 14.337 Å, b 4.015 9.887 β 95.06°) 480 This → α transformation can seen as the displacement of part atoms from their As2Te3...
We report on the laser emission of polycrystalline ceramic obtained from full and congruent crystallization parent glass 1Nd3+:75TeO2-12.5Bi2O3-12.5Nb2O5 composition. In particular, current work underlines importance carefully controlling heat treatment in order to solely crystallize Bi0.8Nb0.8Te2.4O8 cubic phase consequently avoid formation BiNbTe2O8 orthorhombic that would be detrimental for optical purpose. The structure, microstructure photoluminescence properties resulting transparent...
GeS 2 –Sb S 3 –CsCl glass–ceramics with fine porous surfaces were synthesized and tested as optical elements. The porosity is obtained through a two‐step process, including controlled nucleation of CsCl nuclei in the glass matrix followed by selective etching an acid solution. surface several hundred nanometers thick results area increase almost four orders magnitude. pores size approximately 150 nm can be tailored controlling process time. It shown that creation does not critically affect...