A5075641561- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Catalytic Processes in Materials Science
- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- Advanced Chemical Physics Studies
- Inorganic Chemistry and Materials
- Catalysis and Oxidation Reactions
- Thermal Expansion and Ionic Conductivity
- Layered Double Hydroxides Synthesis and Applications
- Extraction and Separation Processes
- nanoparticles nucleation surface interactions
- Fuel Cells and Related Materials
- Inorganic Fluorides and Related Compounds
- Advanced Photocatalysis Techniques
- Conducting polymers and applications
- Perovskite Materials and Applications
- Catalysts for Methane Reforming
- Ionic liquids properties and applications
- Chalcogenide Semiconductor Thin Films
- Polyoxometalates: Synthesis and Applications
- Hydrogen Storage and Materials
- Semiconductor materials and devices
Helmholtz-Institute Ulm
2020-2025
Karlsruhe Institute of Technology
2021-2025
Sapienza University of Rome
2024
Friedrich Schiller University Jena
2024
Institute for Complex Systems
2024
Universität Ulm
2013-2022
Institute of Catalysis and Petrochemistry
2014-2017
Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg
2016
The combination of a magnesium anode with sulfur cathode is one the most promising electrochemical couples because its advantages good safety, low cost, and high theoretical energy density. However, batteries are still in very early stage research development, discovery suitable electrolytes key challenge for further improvement. Here, new preparation method non‐nucleophilic electrolyte solutions using two‐step reaction one‐pot presented, which provides feasible way to optimize...
Here we report for the first time development of a Mg rechargeable battery using graphene-sulfur nanocomposite as cathode, Mg-carbon composite anode and non-nucleophilic based complex in tetraglyme solvent electrolyte. The nanocomposites are prepared through new pathway by combination thermal chemical precipitation methods. Mg/S cell delivers higher reversible capacity (448 mA h g(-1)), longer cyclability (236 g(-1) at end 50(th) cycle) better rate capability than previously described cells....
The rechargeable magnesium (Mg) battery has been considered a promising candidate for future generations due to unique advantages of the Mg metal anode. combination with sulfur cathode is one attractive electrochemical energy storage systems that use safe, low-cost, and sustainable materials could potentially provide high density. To develop suitable electrolyte remains key challenge realization (Mg–S) battery. Herein, we demonstrate tetrakis(hexafluoroisopropyloxy) borate Mg[B(hfip)4]2...
A comparative and in-depth investigation on the reactivity of various Li-based electrolytes solid electrolyte interface (SEI) formed at graphite electrode is carried out using X-ray photoelectron spectroscopy (XPS), chemical simulation test, differential scanning calorimetry (DSC). The investigated include LiX (X = PF6, TFSI, TDI, FSI, FTFSI), dissolved in EC-DMC. SEI nature containing relatively new imide (LiFSI LiFTFSI) imidazole (LiTDI) salts are evaluated compared to those...
Herein, we report the results of a detailed study on use different Li imide salts (LiTFSI, LiFSI, and LiFTFSI) as electrolyte additives for lithium-ion batteries. The introduction lithium in is shown to considerably improve first cycle coulombic efficiency long-term cycling stability graphite/LiFePO4 cells. Using LiTFSI, capacity fading only ∼2% occurred over 600 cycles while control cell with state-of-the-art additive (VC) lost ∼20% initial at 20 °C. XPS impedance spectroscopy measurements...
High-energy-density lithium-metal batteries face the challenge of developing functional electrolytes enabling both stabilization negative electrode and high-voltage positive electrodes (> 4 V versus Li+/Li). Herein, a low-volatility non-flammable ionic liquid electrolyte (ILE) incorporating two anions, bis(fluorosulfonyl) imide (FSI) bis(trifluoromethanesulfonyl)imide (TFSI), is successfully applied to overcome this challenge, employing high-energy, low-Co, Ni-rich positive-electrode...
Abstract Mn‐based hexacyanoferrate (Mn‐HCF) cathodes for Na‐ion batteries usually suffer from poor reversibility and capacity decay resulting unfavorable phase transitions structural degradation during cycling. To address this issue, the high‐entropy concept is here applied to Mn‐HCF materials, significantly improving sodium storage capabilities of system via a solid‐solution mechanism with minor crystallographic changes upon de‐/sodiation. Complementary structural, electrochemical,...
Low-cost and nontoxic deep eutectic liquid electrolytes (DELEs), such as [AlCl
Abstract Lithium-sulphur batteries have generated tremendous research interest due to their high theoretical energy density and potential cost-effectiveness. The commercial realization of Li-S is still hampered by reduced cycle life associated with the formation electrolyte soluble higher-order polysulphide (Li 2 S x , = 4–8) intermediates, leading capacity fading, self-discharge a multistep voltage profile. Herein, we realized practical approach towards direct transformation sulphur Li /Li...
Abstract Hard carbons are currently the most widely used negative electrode materials in Na‐ion batteries. This is due to their promising electrochemical performance with capacities of 200–300 mAh g −1 and stable long‐term cycling. However, an abundant cheap carbon source necessary order comply low‐cost philosophy technology. Many biological or waste have been synthesize hard but impact precursors on final properties anode material not fully understood. In this study biomass structural...
One advantage of Mg batteries, which is often reported in the literature without further qualification such as electrolyte system, high safety due to dendrite-free deposition. Here we report results a study on possibility for dendrite growth metal cells using Mg(TFSI)2/glyme electrolytes. Dendrite and subsequent internal short-circuit were proven electrochemically via cyclic voltammetry, electrochemical impedance spectroscopy (EIS), galvanostatic cycling. In addition, structure chemical...
Abstract Rechargeable magnesium batteries are one of the most promising candidates for next-generation battery technologies. Despite recent significant progress in development efficient electrolytes, an on-going challenge realization rechargeable remains to overcome sluggish kinetics caused by strong interaction between double charged magnesium-ions and intercalation host. Herein, we report that a chemistry with fast layered molybdenum disulfide structures can be enabled using solvated...
In the search for novel battery systems with high energy density and low cost, fluoride ion batteries have recently emerged as a further option to store electricity very volumetric densities. Among metal fluorides, CuF 2 is an intriguing candidate cathode materials due its specific capacity theoretical conversion potential. Here, reversibility of material in system employing F − conducting tysonite‐type La 0.9 Ba 0.1 2.9 electrolyte metallic anode investigated. For first time, reversible...
Herein we report a novel study on the reaction mechanism of non-aqueous aluminum/graphite cell chemistry employing 1-ethyl-3-methylimidazolium chloride:aluminum trichloride (EMIMCl:AlCl<sub>3</sub>) as electrolyte.
Abstract Herein, a Mn‐based metal–organic framework is used as precursor to obtain well‐defined α‐MnS/S‐doped C microrod composites. Ultrasmall α‐MnS nanoparticles (3–5 nm) uniformly embedded in S‐doped carbonaceous mesoporous frameworks (α‐MnS/SCMFs) are obtained simple sulfidation reaction. As‐obtained α‐MnS/SCMFs shows outstanding lithium storage performance, with specific capacity of 1383 mAh g −1 the 300th cycle or 1500 120th (at 200 mA ) using copper nickel foil current collector,...
Fluoride ion batteries prepared in the discharged state using an anode composite of a mixture Mg and MgF<sub>2</sub> show promising cycling performances.
Abstract Herein, the successful synthesis of MnPO 4 ‐coated LiNi 0.4 Co 0.2 Mn O 2 (MP‐NCM) as a lithium battery cathode material is reported. The coating acts an ideal protective layer, physically preventing contact between NCM active and electrolyte and, thus, stabilizing electrode/electrolyte interface detrimental side reactions. Additionally, enhances de‐/intercalation kinetics in terms apparent lithium‐ion diffusion coefficient. As result, MP‐NCM‐based electrodes reveal greatly enhanced...
Abstract The novel functionalized porphyrin [5,15‐bis(ethynyl)‐10,20‐diphenylporphinato]copper(II) (CuDEPP) was used as electrodes for rechargeable energy‐storage systems with an extraordinary combination of storage capacity, rate capability, and cycling stability. ability CuDEPP to serve electron donor or acceptor supports various applications. Combined a lithium negative electrode, the electrode exhibited long cycle life several thousand cycles fast charge–discharge rates up 53 C specific...
Abstract A novel room temperature rechargeable battery with VOCl cathode, lithium anode, and chloride ion transporting liquid electrolyte is described. The cell based on the reversible transfer of ions between two electrodes. cathode delivered an initial discharge capacity 189 mAh g −1 . 113 was retained even after 100 cycles when cycled at a high current density 522 mA Such cycling stability achieved in batteries for first time, demonstrating practicality system beyond proof concept model....
Abstract In the family of Zn/manganese oxide batteries with mild aqueous electrolytes, cubic α‐Mn 2 O 3 bixbyite structure is rarely considered, because lack tunnel and/or layered that are usually believed to be indispensable for incorporation Zn ions. this work, charge storage mechanism systematically and comprehensively investigated. It demonstrated electrochemically induced irreversible phase transition from layered‐typed L‐Zn x MnO , coupled dissolution Mn 2+ OH − into electrolyte,...