A5076524151- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Transition Metal Oxide Nanomaterials
- Supercapacitor Materials and Fabrication
- Catalysis and Oxidation Reactions
- Advanced Battery Technologies Research
- Polyoxometalates: Synthesis and Applications
- MXene and MAX Phase Materials
- Extraction and Separation Processes
- Advanced Condensed Matter Physics
- Crystal Structures and Properties
- Electronic and Structural Properties of Oxides
- Nuclear materials and radiation effects
- Advanced Memory and Neural Computing
- Glass properties and applications
- Advanced battery technologies research
- Advancements in Solid Oxide Fuel Cells
- Catalytic Processes in Materials Science
- Thermal Expansion and Ionic Conductivity
- Advanced materials and composites
- Copper-based nanomaterials and applications
- Advanced Photocatalysis Techniques
- Microwave Dielectric Ceramics Synthesis
- Metal-Organic Frameworks: Synthesis and Applications
- Ferroelectric and Piezoelectric Materials
Université de Toulouse
2015-2025
Centre National de la Recherche Scientifique
2016-2025
Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux
2016-2025
Réseau sur le Stockage Electrochimique de l'énergie
2016-2025
Université Toulouse III - Paul Sabatier
2015-2024
Tokyo University of Agriculture and Technology
2016-2024
Université de Picardie Jules Verne
2004-2020
Institut National Polytechnique de Toulouse
2016-2018
Energy Storage Systems (United States)
2015-2016
University of Oxford
2015
Toward Titanium Carbide Batteries Many batteries and capacitors make use of lithium intercalation as a means storing transporting charge. Lithium is commonly used because it offers the best energy density, but also there are difficulties in larger cations without disrupting crystal structure host. Lukatskaya et al. (p. 1500 ) developed series MX compounds, where M represents transition metal X carbon or nitrogen.The compound Ti 3 C 2 forms two dimensional layered structure, which capable...
Since their commercialization Li-ion batteries have relied on the use of layered oxides (LiMO2) as positive electrodes. Over years, via skilful chemical substitution performances drastically improved in terms safety and capacity, which has nearly doubled (280 mAh/g) with recent arrival Li-rich NMC, i.e. LiCoO2 Co been simultaneously replaced by Mn, Ni Li. This review will aim to describe rationale led this material evolution prior focus NMC phases are sources excitement but challenges well....
There is much interest in Na-ion batteries for grid storage because of the lower projected cost compared with Li-ion. Identifying Earth-abundant, low-cost, and safe materials that can function as intercalation cathodes an important challenge facing field. Here we investigate such a material, β-NaMnO2, different structure from NaMnO2 polymorphs other compounds studied extensively past. It exhibits high capacity (of ca. 190 mA h g(-1) at rate C/20), along good capability (142 2C) retention...
A new MXene phase, Ti2C, obtained by aluminum extraction from Ti2AlC and exfoliation of the reaction product, was electrochemically studied vs. Lithium. Li-ions insertion into 2-D structure characterized in situ XRD measurements. Additional electrochemical kinetic characterizations using a cavity micro-electrode, showed that reactions involve two different phenomena: one diffusion-limited, other not. Ti2C/activated carbon asymmetric cell assembled to highlight high rate performance MXene....
Pseudocapacitive charge storage is based on faradaic charge-transfer reactions occurring at the surface or near-surface of redox-active materials. This property great interest for electrochemical capacitors because substantially higher capacitance obtainable as compared to traditional double-layer electrode processes. While high levels pseudocapacitance have been obtained with nanoscale materials, development practical structures that exhibit pseudocapacitive properties has challenging. The...
Abstract Sodium-ion batteries have been considered as potential candidates for stationary energy storage because of the low cost and wide availability Na sources. However, their future commercialization depends critically on control over solid electrolyte interface formation, well degree sodiation at positive electrode. Here we report an easily scalable ball milling approach, which relies use metallic sodium, to prepare a variety sodium-based alloys, insertion layered oxides polyanionic...
Abstract The revival of the Na‐ion battery concept has prompted intense research activities toward new sustainable Na‐based insertion compounds and their implementation in full cells. Efforts are parted between polyanionic layered compounds. For latter, there been a specific focus on Na‐deficient phases that show cationic anionic redox activity similar to Na 0.67 Mn 0.72 Mg 0.28 O 2 phase. Herein, alkali‐deficient P2‐Na 2/3 7/9 Zn 2/9 phase using more electronegative element (Zn) than is...
MXenes are two-dimensional metal carbides or nitrides that currently proposed in many applications thanks to their unique attributes including high conductivity and accessible surface. Recently, a synthetic route was prepare from the molten salt etching of precursors allowing for preparation MXene (denoted as MS-MXenes, MXene) with tuned surface termination groups, resulting improved electrochemical properties. However, further delamination as-prepared multilayer MS-MXenes still remains...
Abstract Recently, rechargeable zinc‐ion batteries in mild acidic electrolytes have attracted considerable research interest as a result of their high sustainability, safety, and low cost. However, the use conventional Zn‐ion storage materials is hindered by insufficient specific capacity, sluggish reaction kinetics, or poor cycle life. Here, these limitations are addressed pre‐intercalating alkali ions water crystals into layered δ‐MnO 2 (birnessite) to prepare K 0.27 MnO ·0.54H O (KMO) Na...
Abstract MXenes, a rapidly growing family of 2D transition metal carbides, carbonitrides, and nitrides, are one the most promising high‐rate electrode materials for energy storage. Despite significant progress achieved, MXene synthesis process is still burdensome, involving several procedures including preparation MAX, etching MAX to MXene, delamination. Here, one‐pot molten salt electrochemical (E) method proposed achieve Ti 2 C directly from elemental substances (Ti, Al, C), which greatly...
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...
Highly dispersed crystalline/amorphous LiFePO<sub>4</sub> (LFP) nanoparticles encapsulated within hollow-structured graphitic carbon were synthesized using an <italic>in situ</italic> ultracentrifugation process.
Abstract Employing high-rate ion-intercalation electrodes represents a feasible way to mitigate the inherent trade-off between energy density and power for electrochemical storage devices, but efficient approaches boost charge-storage kinetics of are still needed. Here, we demonstrate water-incorporation strategy expand interlayer gap α-MoO 3 , in which water molecules take place lattice oxygen . Accordingly, modified electrode exhibits theoretical-value-close specific capacity (963 C g −1...
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...
2D metal chalcogenide (MC) nanosheets (NS) have displayed high capacities as lithium‐ion battery (LiB) anodes. Nevertheless, their complicated synthesis routes coupled with low electronic conductivity greatly limit them promising LiB electrode material. Here, this work reports a facile single‐walled carbon nanotube (SWCNT) percolating strategy for efficiently maximizing the electrochemical performances of gallium (GaX, X = S or Se). Multiscaled flexible GaX NS/SWCNT heterostructures abundant...
Nanocrystalline Li3VO4 dispersed within multiwalled carbon nanotubes (MWCNTs) was prepared using an ultracentrifugation (uc) process and electrochemically characterized in Li-containing electrolyte. When charged discharged down to 0.1 V vs Li, the material reached 330 mAh g–1 (per composite) at average voltage of about 1.0 with more than 50% capacity retention a high current density 20 A g–1. This corresponds nearly 500C rate (7.2 s) for porous electrode normally used electric double-layer...
The revival of the Na-ion battery concept has prompted intense research activities toward new Na-based insertion compounds and their implementation in full cells. Herein, we report optimization cells consisting either a layered oxide Nax(Fe1/2Mn1/2)O2 or polyanionic Na3V2(PO4)2F3 cathode associated with hard carbon anode. From charge/discharge curves collected via 2 3-electrode measurements, profiles are simulated to evaluate maximum energy density these two systems can deliver. Similar...