Results 21 to 30 of about 34,516 (204)

Fundamental interplay between anionic/cationic redox governing the kinetics and thermodynamics of lithium-rich cathodes

Nature Communications, 2017
Anionic redox chemistry has enabled the design of high-capacity battery cathodes for energy storage. Here, the authors demonstrate reversible anionic redox in an archetypical lithium-rich oxide via bulk-sensitive spectroscopies, further revealing its ...
Gaurav Assat, Dominique Foix, Charles Delacourt, Antonella Iadecola, Rémi Dedryvère, Jean-Marie Tarascon   +5 more
doaj   +1 more source

Electrochemical characterization of Ti3C2Tx MXene prepared via a molten salt etching route in an acetonitrile-based electrolyte

Electrochemistry Communications, 2023
Two-dimensional metal carbide and nitride materials (MXenes) with controlled Cl- and O-surface terminations (MS-Ti3C2Tx) were prepared by a molten salt etching route and their electrochemical properties were investigated in nitrile-based electrolytes ...
Liyuan Liu, Encarnacion Raymundo-Piñero, Pierre-Louis Taberna, Patrice Simon   +3 more
doaj   +1 more source

Redox Complexity in Sodium Manganese Hexacyanomanganate and Its Influence on Sodium‐Ion Storage Performance

Advanced Energy Materials, EarlyView.
The role of each Mn site in the Na3‐xMn[Mn(CN)6]·zH2O compounds’ redox activity was investigated using a combined experimental–computational approach, which shows that only the low‐spin Mn‐C site undergoes redox changes (Mn1+ to Mn4+), while high‐spin Mn‐N remains unchanged. The study confirms the presence of the Mn1+ intermediate and newly reveals its
Zhenying Li, Nilanka M. Keppetipola, Yu Wang, Gwenaëlle Rousse, Romain Dugas, Anatolii V. Morozov, Artem M. Abakumov, Héloïse Pages, Mouna Ben Yahia, Marie‐Liesse Doublet, Ozlem Sel, Jean‐Marie Tarascon   +11 more
wiley   +1 more source

Stockage de marchandise en entrepôt

, 2023
Le projet Le Grand Entrepôt veut montrer que dans la supply chain contemporaine, le stockage n’est plus simplement entreposage. C’est l’ensemble des moments dans la « vie sociale » (Appadurai, 1986) de la marchandise où s’effectuent des tâches cruciales ...
Mélat-Couhet, Jean-Michel, Mercier, Delphine   +1 more
core  

Predicting Crystal Structures and Ionic Conductivities in Li3YCl6−xBrx Halide Solid Electrolytes Using a Fine‐Tuned Machine Learning Interatomic Potential

Advanced Intelligent Systems, EarlyView.
This study refines the Crystal Hamiltonian Graph Network to predict energies, structures, and lithium‐ion dynamics in halide electrolytes. By generating ordered structural models and using an iterative fine‐tuning workflow, we achieve near‐ab initio accuracy for phase stability and ionic transport predictions.
Jonas Böhm, Aurélie Champagne
wiley   +1 more source

Stabilisation des prix des céréales : avantages et coûts du stockage public [PDF]

, 2013
La question du stockage public, comme instrument de régulation permettant de limiter les coûts de l'instabilité des marchés agricoles, a connu une vive résurgence avec la flambée des prix de 2007-2008, puis à l'occasion du G20 agricole.
Boussard, Jean-Marc, Gérard, Françoise, Piketty, Marie-Gabrielle   +2 more
core  

La conservation hermétique des céréales : comment les avancées de la recherche ont été ignorées au XXe siècle en France

Cahiers Agricultures
Pendant la première moitié du XXe siècle, le stockage des grains à la ferme s’est effectué essentiellement en sacs conservés en grenier. À partir des années 1930 sont apparus les premiers silos de stockage de type coopératif.
Fleurat-Lessard Francis
doaj   +1 more source

Les scénarios énergétiques à l’épreuve du stockage des énergies intermittentes

Comptes Rendus. Chimie, 2021
A large share of wind and solar in the electricity mix increases the part of fatal and intermittent productions which must be compensated by a back up system able to continuously equate supply and demand.
Fontecave, Marc, Grand, Dominique
doaj   +1 more source

Diffusion Coefficient and Viscosity of Methyl Viologen Electrolyte Estimation Based on a Kinetic Monte Carlo Computational Approach Coupled with the Mean Square Displacement Method

Batteries &Supercaps, Volume 8, Issue 3, March 2025.
A novel and comprehensive 3D‐resolved kinetic Monte Carlo model coupled with mean square displacement analysis is introduced. This computational approach allows to explore, for the first time, the concentration and the state of charge effects on ionic diffusion coefficient and viscosity in methyl viologen‐based electrolytes used in organic redox flow ...
Jia Yu, Emmanuel Baudrin, Alejandro A. Franco   +2 more
wiley   +1 more source

High‐Resolution Mapping of Discharge Product in Li─O2 Batteries

Small Methods, EarlyView.
Li─O2 batteries promise exceptional energy density, but have several factors limiting performance, such as poor rate performance. To understand rate limitations, scanning electron microscopy with energy dispersive X‐ray spectroscopy and X‐ray nano‐computed tomography were employed to map the distribution of discharge products in discharged air ...
Laurence F. Brazel, Margherita Martini, Eric Maire, Arnaud Demortière, Michael De Volder, Clare P. Grey, Israel Temprano   +6 more
wiley   +1 more source