A5061597965- Advancements in Battery Materials
- Hydrogen Storage and Materials
- Ammonia Synthesis and Nitrogen Reduction
- Electrocatalysts for Energy Conversion
- Advanced Battery Technologies Research
- Semiconductor materials and devices
- Supercapacitor Materials and Fabrication
- Magnesium Alloys: Properties and Applications
- Electrodeposition and Electroless Coatings
- Molten salt chemistry and electrochemical processes
- Advanced Battery Materials and Technologies
- High-Temperature Coating Behaviors
- MXene and MAX Phase Materials
- Electrochemical Analysis and Applications
- Catalytic Processes in Materials Science
- Extraction and Separation Processes
- Corrosion Behavior and Inhibition
- Semiconductor materials and interfaces
- Advanced materials and composites
- Anodic Oxide Films and Nanostructures
- Aluminum Alloys Composites Properties
- Nanoporous metals and alloys
- Electron and X-Ray Spectroscopy Techniques
- Conducting polymers and applications
- Metal and Thin Film Mechanics
Institut National de la Recherche Scientifique
2016-2025
Centre National pour la Recherche Scientifique et Technique (CNRST)
2007-2017
Collège Lionel Groulx
2012
Hydro-Québec
1998-2009
Université du Québec à Montréal
2008
Centre National de la Recherche Scientifique
1994
Chimie ParisTech
1994
The University of Texas at Dallas
1994
Sorbonne Université
1994
Laboratoire d'Electrochimie Moléculaire
1994
A Si-based anode with improved performance can be achieved using high-energy ball-milling as a cheap and easy process to produce Si powders prepared from coarse-grained material. Ball-milled present all the advantages of nanometric powders, but not drawbacks. Milled are nanostructured micrometric agglomerates (median size ∼10 μm), made submicrometric cold-welded particles crystallite nm. The particle provides handling non-toxicity compared well four times higher tap density....
A nanosilicon-based composite electrode that can achieve more than 700 cycles at a high capacity of 960 mAh/g was prepared using aqueous processing in an acidic medium. The buffering the solution is mandatory to promote covalent bonding between Si particles and carboxymethyl cellulose (CMC) binder. latter claimed allow formation mechanically stronger contacts within addition CMC bridging carbon black particles.
Abstract It is well known that the mechanical properties of lithium‐ion battery electrodes impact their electrochemical performance. This especially critical for Si‐based negative electrodes, which suffer from large volume changes active mass upon cycling. Here, this study presents a postprocessing treatment (called maturation) improves and stabilities silicon‐based anodes made with an acidic aqueous binder. consists storing electrode in humid atmosphere few days before drying cell assembly....
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTZeolite encapsulated cobalt(II) and copper(II) perfluorophthalocyanines. Synthesis characterizationKenneth J. Balkus Jr., Alexei G. Gabrielov, Stephen L. Bell, Fethi Bedioui, Lionel Roue, Jacques DevynckCite this: Inorg. Chem. 1994, 33, 1, 67–72Publication Date (Print):January 1994Publication History Published online1 May 2002Published inissue 1 January...
Abstract The alloying reaction of silicon with lithium in negative electrodes for lithium‐ion batteries causes brutal morphological changes that severely degrade their cyclability. In this study, the dynamics expansion and contraction, cracking bulk debonding at interface current collector are visualized by situ synchrotron X‐ray computed tomography quantified from appropriate 3D imaging analyses. Two made same material having reasonable particle size distribution an applied point view...
Cu foam is evaluated as a replacement for metal foil current collectors to create 3D composite electrodes with the objective produce Si‐based anodes high loadings. The are prepared by casting slurry into porosity of foam. With such design, loading and surface capacity can reach values 10 mg cm −2 mAh . Compared common 2D copper framework shows great advantage in cycle life (more than 400 cycles at Si commercial micrometric particles) power performance. thinness coating on walls favors better...
Hydrazine (N2H4) is a promising high-power energy carrier for fuel cells, combining the density of methanol (MeOH) with rapid oxidation kinetics hydrogen (H2). N2H4 does not require expensive Pt group metals nor Au low-potential (high voltage) oxidation, offering significantly lower cell materials costs compared to H2, MeOH, ethanol (EtOH), and ammonia (NH3). In our study, we use rotating disk electrode (RDE) voltammetry explore at wide variety catalysts, including first-row transition (Co,...
In this study, nanocrystalline copper−palladium films were synthesized over a wide range of compositions by coelectrodeposition Pd and Cu in 1 M NaCl solution containing both CuCl2 PdCl2 various proportions. The deposition potential was fixed at −0.5 V versus saturated calomel electrode (SCE). These coatings characterized scanning electron microscopy coupled to energy dispersive X-ray analysis (SEM−EDX), diffraction (XRD), photoelectron spectroscopy (XPS). analyses revealed fine homogeneous...