A5038774969- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Semiconductor materials and devices
- Transition Metal Oxide Nanomaterials
- Semiconductor materials and interfaces
- Extraction and Separation Processes
- MXene and MAX Phase Materials
- Advanced battery technologies research
- Graphene research and applications
- Interconnection Networks and Systems
- Water management and technologies
- Archaeological and Historical Studies
- Graphene and Nanomaterials Applications
- Thermal Expansion and Ionic Conductivity
- Copper-based nanomaterials and applications
- Membrane-based Ion Separation Techniques
- Electron and X-Ray Spectroscopy Techniques
- Adsorption and biosorption for pollutant removal
- Archaeology and Historical Studies
- Environmental and Ecological Studies
- Inorganic Chemistry and Materials
- Synthesis and properties of polymers
- Hydrogen embrittlement and corrosion behaviors in metals
University of Córdoba
2008-2024
Cordoba University
2009-2021
CIC energiGUNE
2016-2021
Paul Scherrer Institute
2013-2020
University of the Basque Country
2020
Rede de Química e Tecnologia
2019
CuxO-TiO2 (x = 1, 2) nanomaterials are synthesized on polycrystalline Ti substrates by a convenient chemical vapor deposition (CVD) approach, based the initial growth of CuxO matrix (at 400 and 550 °C for x 1 2, respectively) subsequent overdispersion TiO2 at °C. All CVD processes carried out in an oxygen atmosphere saturated with water vapor. The obtained systems investigated means glancing incidence X-ray diffraction (GIXRD), photoelectron spectroscopy (XPS), secondary ion mass...
X-ray diffraction and tomography are performed on intermetallic particles undergoing lithiation in a porous electrode. Differences between ensemble phase evolution that at single-particle level explored. It is found all evidence core-shell lithiation; however, with internal porosity more mechanically robust exhibit less fracture.
Herein, we report for the first time use of TiSb2 alloy as anode material sodium-ion batteries (NIBs) and capacitors (NICs). The electrochemical performance in NIBs shows stable cycling with a capacity about 225 mAh·g–1 200 cycles. Discrepancies expected theoretical specific charge are discussed by means operando XRD ex situ TEM analysis. excellent rate capability enables NICs, achieving promising high energy densities 132 Wh·kg–1 at 114 W·kg–1 65 11 kW·kg–1, which among best reported values...
Herein we report a simple approach for the preparation of graphene oxide-carbon nanotube-sulfur composites. The self-standing composites can be easily prepared by freeze drying frozen nanotube suspension, and then impregnated with sulfur melt diffusion. Composites obtained in this way are physicochemically characterized elemental analysis, X-ray diffractometry (XRD), electron microscopy gas adsorption, showing three dimensional macroporous graphene-based architecture which is homogeneously...
The development of renewable energy sources requires the parallel sustainable storage systems because its noncontinuous production. Even most-used battery on planet, lithium-ion battery, is reaching technological limit. In light this, lithium-sulfur batteries have emerged as one most promising technologies to address this problem. use biomass produce cathodes for these addresses not only aforementioned problem, but it also reduces carbon footprint and gives added value something normally...
Carbon fibers obtained by pyrolysis of tailored resorcinol/formaldehyde polymer particles were used to anchor Si nanoparticles at their surface. The carbonization process, carried out 1000 °C under nitrogen, induced strong interactions between and the carbon matrix through a thick amorphous silicon oxide layer as revealed X-ray diffraction (XRD) photoelectron spectroscopy (XPS). Therefore, actual composition composites was Si/SiOx/C (fibers). Component contents determined from...
Crystalline TiSb2 and NbSb2 prepared by the ceramic route were examined as negative electrodes for lithium-ion batteries. The crystal structures of both materials are different, well their electrochemical responses. has a specific charge 450 mA h g−1 at an average potential 0.7 V vs. Li+/Li is able to maintain this during 70 cycles while 400 first few which then fades continuously. reaction mechanism was revisited in paper applying high resolution situ synchrotron X-ray diffraction...
Lithium-sulfur batteries (Li-S) are identified as one of the most promising rechargeable energy systems due to their high theoretical capacity, gravimetric density, low cost and environmental impact. However, insulating nature sulfur migration soluble polysulfides during discharge limit practical application. In an attempt mitigate these drawbacks here we report preparation a novel composite formed by hydrothermally reduced graphene oxide (HrGO) submicrometer-sized particles. The role HrGO...
An amorphous cobalt sulfide was synthesized by precipitation from aqueous solutions of nitrate and sodium sulfide, its chemical composition, , determined energy dispersive X-ray analysis thermogravimetric data. photoelectron spectroscopy measurements confirmed the valence state Co to be bound O in molecules. This reacts reversibly with lithium cells several steps, which exhibited some coincidence those observed for crystalline as revealed step potential curves. However, cycling properties...
Carbon coated tin phosphide is synthesized by an easily scalable ball milling method. The origin of the different electrochemical performance electrodes in ether- and carbonate-based electrolytes discussed.
In this work we report an easy method for improving the deficient properties of nanosized Si as electrode material lithiumcells. The involves mixing it with cellulose fibers in appropriate amounts. A composite made a ratio 34:66%w/w Si/cellulose and containing no other additive was found to exhibit very good cycling e.g., specific capacity ca.1400 mAh/g after 50 cycles, compared only 400 from pure . performance comparableto, or even better than, that Si-based electrodes obtained by using more...
Lithium-sulphur (Li-S) batteries offer high energy density compared to lithium-ion batteries, emerging as a promising technology for the next generation of storage systems. The ongoing challenge is improve their electrochemical performance, extend useful life and mitigate some problems that persist in this technology, by investigation materials with diverse properties. This work seeks elucidate importance repercussions associated functionalisation graphene-based through nitrogen...
Na3V2(PO4)2F3 (NVPF), a typical sodium superionic conductor (NASICON) type structure, has attracted much interest as potential positive electrode in sodium-ion battery. However, the inherently poor electronic conductivity of phosphates compromises electrochemical properties this material. Here, we develop general strategy to improve performance by preparing new composite material "polyaniline (PANI)@NVPF" using Pickering emulsion method. The X-ray diffraction and Raman results indicated...