A5069736259- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Magnetic and transport properties of perovskites and related materials
- Advanced Battery Technologies Research
- Advanced Condensed Matter Physics
- Extraction and Separation Processes
- Advanced battery technologies research
- Multiferroics and related materials
- Glass properties and applications
- High-pressure geophysics and materials
- Luminescence Properties of Advanced Materials
- Random lasers and scattering media
- Magnetic Properties of Alloys
- Rare-earth and actinide compounds
- Shape Memory Alloy Transformations
- Ionic liquids properties and applications
- Analytical Chemistry and Sensors
- Thermal Expansion and Ionic Conductivity
- Chemical Synthesis and Characterization
- Transition Metal Oxide Nanomaterials
- Geomagnetism and Paleomagnetism Studies
- Electrochemical Analysis and Applications
- Microfluidic and Bio-sensing Technologies
- Thermal properties of materials
CIC energiGUNE
2016-2025
Albert Einstein College of Medicine
2023
National Renewable Energy Centre
2019-2020
Energy Storage Systems (United States)
2020
Parque Tecnológico de la Salud
2014-2016
Universidad de Zaragoza
2008-2012
Laboratoire de Cristallographie et Sciences des Matériaux
2001-2010
Centre National de la Recherche Scientifique
2001-2009
KU Leuven
2007-2009
Chimie ParisTech
2009
Abstract While sodium‐ion batteries (SIBs) represent a low‐cost substitute for Li‐ion (LIBs), there are still several key issues that need to be addressed before SIBs become market‐ready. Among these, one of the most challenging is negligible sodium uptake into graphite, which keystone present LIB technology. Although hard carbon has long been established as best substitutes, its performance remains below graphite in LIBs and storage mechanism under debate. Many other carbons have recently...
Ordered and disordered carbonaceous materials cover a wide range of the energy storage market. In this work thorough analysis Small Angle X-ray Scattering (SAXS) patterns number carbon samples for (including graphite, soft carbon, hard activated glassy carbide-derived carbon) is shown. To do so, innovative geometrical models to describe scattering have been built refine experimental SAXS data. The results obtained provide full description atomic pore structures these carbons that in some...
In this paper we examine the mechanism of Na insertion and extraction in FePO4–NaFePO4 system. Chemical preparation intermediate Na1−xFePO4 phase has revealed existence a range stable compositions with different Na+/vacancy arrangements. The mechano-chemical aspects charge discharge reactions are also discussed.
Transition metal layered oxides are promising cathode materials for sodium‐ion batteries. Phase transitions involving different stacking sequences of the oxide layers often plague electrochemistry these during cycling, which strongly impacts in their electrochemical performance. However, underlying mechanisms processes remain elusive. Interestingly, P2‐ and O3‐Na 2/3 Fe Mn 1/3 O 2 phases first transition polymorphs that have been synthesized with exactly same composition. This offers...
Insight into the mechanism of Na insertion and extraction FePO<sub>4</sub>–NaFePO<sub>4</sub> based on a detailed <italic>in situ</italic> X-ray diffraction study, from which interesting new features were identified analysed.
Graphite ineffectiveness in sodium storage has induced extensive research on non-graphitic carbons as high-performance active materials for negative electrodes of Na-ion batteries. Among these, soft are promising high-power storage, yet their practical success is jeopardized by low initial coulombic efficiency (i.e., 65–70%). Herein, a facile and rational strategy proposed based mechanical treatment at an intermediate stage the synthesis, after scrutinizing journey carbon precursor (e.g.,...
A bright persistent photoluminescence has been observed in Er(3+)-doped nanoparticles prepared by selective dissolution of bulk oxyfluoride nano-glass-ceramics. 2 orders magnitude decrease intensity the (4)S(3/2)-->(4)I(15/2) green emission band Er(3+) these is magnetic fields up to 50 T. This strong luminescence sensitivity field can be used for localization and distant optical detection nanovolumes with a field-resolution 0.01
Reversibility of transition metal migration in layered oxides as cathodes for sodium ion batteries at the expense polarization increase.
Abstract The investigation of phosphoric acid treatment on the performance hard carbon from a typical lignocellulosic biomass waste (peanut shell) is herein reported. A strong correlation discovered between time and structural properties electrochemical in sodium‐ion batteries. Indeed, prolonged enables use lower temperatures, that is, energy consumption, for carbonization step as well improved high‐rate (122 mAh g −1 at 10 C).
The effect of water on the properties superconcentrated sodium salt solutions in ionic liquids (ILs) was investigated to design electrolytes for battery applications with as an additive. Water added a 50 mol % solution NaFSI [FSI=bis(fluorosulfonyl)imide] liquid N-methyl-N-propylpyrrolidinium bis(fluorosulfonyl)imide (C3 mpyrFSI). Although thermal (e.g., glass transition temperature) showed little dependence content, viscosity and, particular, conductivity were strongly affected. Na|Na...
Solid-state batteries with a Li metal anode and polymer–ceramic electrolytes hold the promise to boost safety energy density, provided that stable conductive interfaces are achieved. Here, by focusing on composite electrolyte system LLZO–PEO(LiTFSI), i.e., Li-ion doped-Li7La3Zr2O12 (LLZO) garnet fillers embedded within poly(ethylene oxide) matrix, we report impact processing has its mesostructure ultimately full cell kinetics. Two distinct solvent-based routes used prepare membranes fixed...
Over the last years, hard carbon (HC) has been most promising anode material for sodium-ion batteries due to its low voltage plateau, cost and sustainability. In this study, biomass waste (spent coffee grounds, sunflower seed shells rose stems) was investigated as potential preparation combining a two-step method consisting of on hydrothermal carbonization (HTC), remove inorganic impurities increase content, subsequent pyrolysis process. The use HTC pretreatment prior improves specific...
Now that fast action is needed to mitigate the effects of climate change, developing new technologies reduce worldwide carbon footprint critical. Sodium ion capacitors can be a key enabler for widespread transport electrification or massive adoption renewable technologies. However, years‐long journey needs made from first proof‐of‐concept report degree maturity technology transfer market. To shorten this path, work gathers all stakeholders involved in technical development sodium capacitor...
The structure and magnetic properties of P2-Na 2/3 Fe Mn 1/3 O 2 is resolved using operando diffraction complimentary techniques, revealing how structural changes during (de-)sodiation differ with applied current density contribute to capacity fading.