A5046939631- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Advanced Battery Technologies Research
- Extraction and Separation Processes
- Conducting polymers and applications
- Transition Metal Oxide Nanomaterials
- Electrocatalysts for Energy Conversion
- Polyoxometalates: Synthesis and Applications
- Fuel Cells and Related Materials
- Layered Double Hydroxides Synthesis and Applications
- Catalysis and Oxidation Reactions
- Semiconductor materials and devices
- Gas Sensing Nanomaterials and Sensors
- Machine Learning in Materials Science
- X-ray Diffraction in Crystallography
- Acoustic Wave Resonator Technologies
- Surface and Thin Film Phenomena
- Advanced materials and composites
- Magnetic Properties and Synthesis of Ferrites
- Electron and X-Ray Spectroscopy Techniques
- Advanced Nanomaterials in Catalysis
- Ammonia Synthesis and Nitrogen Reduction
- Ferroelectric and Piezoelectric Materials
Fraunhofer Institute for Solar Energy Systems
2023-2025
University of Freiburg
2023-2025
Karlsruhe Institute of Technology
2018-2024
Applied Materials (United Kingdom)
2024
Helmholtz-Institute Ulm
2018-2023
Energy Storage Systems (United States)
2023
Applied Materials (Germany)
2020-2023
Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg
2013-2020
Università di Camerino
2005-2015
Universität Ulm
2015
Abstract Herein, an eco‐friendly and high safety aqueous Mg‐ion electrolyte (AME) with a wide electrochemical stability window (ESW) ≈3.7 V, containing polyethylene glycol (PEG) low‐concentration salt (0.8 m Mg(TFSI) 2 ), is proposed by solvation structure reorganization of AME. The PEG agent significantly alters the Mg 2+ hydrogen bonds network AMEs forms direct coordination TFSI ‐ , thus enhancing physicochemical properties electrolytes. As exemplary material, V O 5 nanowires are tested in...
Orthorhombic V2O5 nanowires were successfully synthesized via a hydrothermal method. A cell-configuration system was built utilizing as the cathode and 1 M Mg(ClO4)2 electrolyte within acetonitrile, together with Mg xMo6S8 ( x ≈ 2) anode to investigate structural evolution oxidation state local changes of V2O5. The deliver an initial discharge/charge capacity 103 mAh g-1/110 g-1 highest discharge 130 in sixth cycle at C/20 rate system. In operando synchrotron diffraction X-ray absorption...
Abstract Battery technologies based in multivalent charge carriers with ideally two or three electrons transferred per ion exchanged between the electrodes have large promises raw performance numbers, most often expressed as high energy density, and are also on materials that widely abundant less expensive. Yet, these still globally their infancy, some concepts (e.g. Mg metal) being more technologically mature. The challenges to address derived one side from highly polarizing nature of ions...
The "oxygen-rich" Ca2+ pre-intercalated bilayered vanadium oxide (CaVOnH) was synthesized via hydrothermal method and determined as a monoclinic structure with reasonable lattice parameters. CaVOnH achieves first discharge capacity of 273 mAh g−1 retention 91% at 50 mA in 0.8 m Mg(TFSI)2-85%PEG-15%H2O (polyethylene glycol, PEG), but limited rate capability due to the low ionic conductivity electrolyte. Dimethyl sulfoxide (DMSO) is used co-solvent tune physical-chemical properties aqueous...
Abstract Sodium‐ion batteries (NIBs) are promising energy‐storage devices with advantages such as low cost and highly abundant raw materials. To probe the electrochemical properties of NIBs, sodium metal is most frequently applied reference and/or counter electrode in state‐of‐the‐art literature. However, high reactivity its impact on performance usually neglected. In this study, it shown that spontaneous reactions organic electrolytes importance critical interpretation experiments...
Promising ZnMn<sub>2</sub>O<sub>4</sub> anode provides high capacity in Li-ion batteries and the increase during cycling due to reversible Li storage SEI extra redox reaction of Mn(<sc>ii</sc>)/Mn(<sc>iii</sc>).
The Li<sup>+</sup> storage mechanism in a carbon composited zinc sulfide as an enhanced conversion-alloying anode material for ion batteries is studied by <italic>in situ</italic> methods. Further, it found that the (de)lithiation processes are affected low charge transfer resistance, and coated can effectively improve long-term cycling stability.
Sodium-ion batteries may develop into a cost-efficient alternative to lithium-ion batteries. Na3V2(PO4)3/C (NVP/C) is known be suitable electrode material for such that can used as an anode or cathode. Here, NVP/C-based electrodes were investigated in different cell configurations. The cycled against the materials hard carbon, Sb/C, SnSb/C, and sodium metal. Furthermore, NVP versus was investigated. When NVP/C other materials, cells exhibit relatively poor reliability, but NVP–NVP cells,...
It is a common opinion that activated carbon (AC) should be functional groups-free when employed as capacitor-type material in organic electrolytes. This work analyzes detail the relationship between electrochemical performance of modified electrodes and introduced groups two electrolytes containing lithium salts:1M LiPF6 EC-DMC (the commercial LP30) 1M LiTFSI EC-DMC. The surface (especially C=O or O–C=O) can induce higher capacitance to AC (more than 50% increase compared unmodified AC),...
OLC1300V as conductive carbon additive provides an optimum Sb–C interaction. A remarkable rate performance is attained, electrode cracking from volume expansion prevented, and the solid electrolyte interphase homogeneity significantly improved.
Abstract Nowadays, Al (dual) batteries are mainly based on graphite cathode materials. Besides this material, the limited life cycle and rate performance of other possible materials have hampered development practical sustainable rechargeable aluminium (RABs). Herein, we report an organic A 4 ‐metal‐free porphyrin system bearing diphenylamimo‐phenyl functional units as Al‐storage which is capable delivering a reversible capacity 83 mAh g −1 at 1 after 200 cycles displays good cycling...
Abstract Nickel aluminum layered double hydroxide (NiAl LDH) with nitrate in its interlayer is investigated as a negative electrode material for lithium-ion batteries (LIBs). The effect of the potential range (i.e., 0.01–3.0 V and 0.4–3.0 vs. Li + /Li) binder on performance 1 M LiPF 6 EC/DMC Li. NiAl LDH based sodium alginate (SA) shows high initial discharge specific capacity 2586 mAh g −1 at 0.05 A good stability /Li, which better than what obtained polyvinylidene difluoride (PVDF)-based...
V<sub>2</sub>O<sub>5</sub> undergoes two-phase reaction during the 1st cycle, accompanied by formation and decomposition of byproducts.
Abstract Postlithium batteries have received intense attention as an alternative for large‐scale electric energy storage systems due to their rich resources and low cost. Vanadium pentoxide (V 2 O 5 ) is very promising a host material because of its structure, high capacity, easy preparation, adequate safety. V has several modifications, including α‐, β‐, δ‐, γ‐, ζ‐, ε‐V 5, well hydrate · n H O). In this mini‐review, we comprehensively summarize the crystal structure polymorphs materials,...
We present an X-ray absorption spectroscopy (XAS) study of a low Pt content catalyst layer (Pt loading 0.1 mg cm−2) operating at the cathode proton exchange membrane fuel cell (PEMFC). This is based on use mesoporous inorganic matrix as support for catalystPt nanoparticles. Due to high dilution, in situ measurements its structural properties by XAS are challenging and suitable experimental strategies must be devised this purpose. In particular, we show that accurate XASin fluorescence can...