A5068105642- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Electrochemical Analysis and Applications
- Extraction and Separation Processes
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Corrosion Behavior and Inhibition
- Conducting polymers and applications
- Advanced Photocatalysis Techniques
- Mesoporous Materials and Catalysis
- Transition Metal Oxide Nanomaterials
- Catalytic Processes in Materials Science
- Force Microscopy Techniques and Applications
- Analytical Chemistry and Sensors
- TiO2 Photocatalysis and Solar Cells
- Electron and X-Ray Spectroscopy Techniques
- Molecular Junctions and Nanostructures
- Semiconductor materials and interfaces
- Anodic Oxide Films and Nanostructures
- Polymer Surface Interaction Studies
- Advanced Memory and Neural Computing
- Nanoporous metals and alloys
National Institute of Chemistry
2016-2025
University of Ljubljana
2016-2025
SINTEF Industry
2024
SINTEF
2024
Institute of Metals and Technology
2022
Centre National de la Recherche Scientifique
2007-2019
Alistore
2013-2014
Max-Planck-Institut für Nachhaltige Materialien
2014
Hochschule Düsseldorf University of Applied Sciences
2014
Jožef Stefan Institute
2003-2013
Porous, well crystalline composites with different amounts of carbon have been prepared by a sol-gel technique. The thickness coatings (paintings) has determined high-resolution transmission electron microscopy. It is shown that coating can be controlled the amount and it an impact on obtained reversible capacity. Furthermore, atomic ratio nonactive Fe(III) phase (presumably in as-synthesized depends composite. Using Mössbauer spectroscopy, we confirmed remains nearly unchanged composite...
By using nanometer-sized RuO2 to "metalize" tiny pores and even "repair" incomplete electronically conducting (carbon) networks in porous carbon-containing LiFePO4 (see figure), the kinetics rate capability of composite are significantly improved. The key lies bonding properties RuO2, which enables good contact both oxidic storage material as well carbon structures used current collector. Supporting information for this article is available on WWW under...
Li insertion electrodes are made by pressing a mixture of active material and additives on metallic substrate. Here we estimate how various interphase contacts affect the electrode kinetics. We apply variable external mechanical pressure onto different cathodes measure their impedance response. Similar experiments performed dry composites in contact with: Al or Cu foil, Ag paste. Most surprisingly, find that high-frequency arc is due to between metal material. This fundamental contradiction...
Lithium-based batteries are a class of electrochemical energy storage devices where the potentiality impedance spectroscopy (EIS) for understanding battery charge mechanisms is still to be fully exploited. Generally considered as an ancillary technique, application EIS should promoted focusing on improved experimental design experiments and advanced data analysis using physics-based models. Electrochemical key technique Li-based processes. Here, authors discuss current state art, advantages...
Battery watch: UV/Vis spectrophotometry is demonstrated as a powerful analytical method for the in situ study of polysulfides. Through interactions that occur between different chain-length polysulfide molecules and radiation, quantitative qualitative determination polysulfides formed during Li–S battery operation can be achieved.
Iridium-based particles, regarded as the most promising proton exchange membrane electrolyzer electrocatalysts, were investigated by transmission electron microscopy and coupling of an electrochemical flow cell (EFC) with online inductively coupled plasma mass spectrometry. Additionally, studies using a thin-film rotating disc electrode, identical location scanning microscopy, well X-ray absorption spectroscopy have been performed. Extremely sensitive time-and potential-resolved dissolution...
The dissolution behaviors of Ru and ruthenium oxide nanoparticles in acidic media were studied for the first time using highly sensitive situ measurements concentration by inductively coupled plasma mass spectrometry (ICP-MS). Online time- potential-resolved electrochemical profiles revealed novel corrosion features (signals) potential window from 0 to ∼1.4 V, where known severe due oxygen evolution reaction (OER) takes place. Most follow thermodynamic changes oxidation/reduction state,...
Water electrolysis powered by renewables is regarded as the feasible route for production of hydrogen, obtained at cathode side through electrochemical hydrogen evolution reaction (HER). Herein, we present a rational strategy to improve overall HER catalytic performance Pt, which known best monometallic catalyst this reaction, supporting it on conductive titanium oxynitride (TiON x ) dispersed over reduced graphene oxide nanoribbons. Characterization Pt/TiON composite revealed presence small...
Li2MnSiO4 has been identified recently as one of the first cathode battery materials that, at least in principle, could exchange more than 1 lithium per redox-active transition metal ion. In this article, we analyze experimentally and by computer simulations based on density functional theory (DFT) why actual experiments have not confirmed these expectations. We show that is unstable upon delithiation, with a strong tendency to amorphize. Detailed DFT calculations further indicate it might...
Large amounts of Li ions can be electrochemically intercalated into and controllably released by the channels between individual molybdenum selenide nanotubes (see Figure), forming basis for a promising safe new battery electrode material. The use dichalcogenide rather than more usual carbon is shown to have important advantages.
To increase the power density of battery materials, without significantly affecting their main advantage a high energy density, novel material architectures need to be developed. Using example LiFePO4, we demonstrate simple, sol−gel-based route that leads large (up 20 μm) primary LiFePO4 particles, each which contains hierarchically organized pores in meso and macro range. As are formed due vigorous gas evolution (mainly CO CO2) during degradation citrate precursor, they perfectly...
In the literature, interpretation of electrochemical impedance spectra measured on insertion cathode materials is far from being unique. most cases, various arbitrarily selected equivalent circuits have been used for analysis whereby criterion merit has mainly quality fit. Herein, we propose a different approach. We try to explain main features such as high and medium frequency arcs low diffusional tail using convenient (simplified) derived quite general description due particulate (porous)...
Active monomers: Grafting soluble organic molecules onto insoluble, high-surface-area substrates, e.g. calixquinones on nanoparticles (see pciture), allows the production of a wide range very stable materials for lithium-ion battery applications. Immobilization avoids problem dissolution, which has previously led to performance degradation.
Abstract Mg batteries are a promising battery technology that could lead to safer and significantly less expensive non‐aqueous with energy densities comparable or even better than state‐of‐the‐art Li‐ion batteries. Although the first prototype using stable Mo 6 S 8 as cathode was introduced over fifteen years ago, major challenges remain be solved. In particular, design of high materials development non‐corrosive electrolytes oxidative stability issues need tackled. Herein, we present new,...