A5067293578- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Conducting polymers and applications
- Diamond and Carbon-based Materials Research
- Graphene research and applications
- Membrane-based Ion Separation Techniques
- Carbon Nanotubes in Composites
- Electrocatalysts for Energy Conversion
- Transition Metal Oxide Nanomaterials
- Thermal Expansion and Ionic Conductivity
- Membrane Separation Technologies
- NMR spectroscopy and applications
- Tree Root and Stability Studies
- Aerogels and thermal insulation
- Advanced materials and composites
- Nanotechnology research and applications
- Recycling and Waste Management Techniques
- Hybrid Renewable Energy Systems
- Magnetic and Electromagnetic Effects
- Advanced NMR Techniques and Applications
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Infection Control in Healthcare
Saarland University
2014-2022
Leibniz-Institute for New Materials
2014-2022
Klinikum Saarbrücken
2016-2017
Délégation Centre Limousin Poitou-Charentes
2015-2017
Leibniz Association
2014-2015
Carbon onions are a relatively new member of the carbon nanomaterials family. They consist multiple concentric fullerene-like shells which highly defective and disordered.
Most efforts to improve the energy density of supercapacitors are currently dedicated optimized porosity or hybrid devices employing pseudocapacitive elements. Little attention has been given effects low charge carrier carbon on total material capacitance. To study effect graphitization differential capacitance, onion (also known as onion‐like carbon) chosen. The increase in states (DOS) related carriers materials is an important that leads a substantial capacitance electrode potential...
This work establishes molybdenum disulfide/carbon nanotube electrodes for the electrochemical desalination of high molar saline water.
The structural characterization of nanoporous carbons is a challenging task as they generally lack long-range order and can exhibit diverse local structures. Such represents an important step toward understanding improving the properties functionality porous carbons, yet few experimental techniques have been developed for this purpose. Here we demonstrate application nuclear magnetic resonance (NMR) spectroscopy pair distribution function (PDF) analysis new tools to probe structures...
We introduce a hybrid energy storage system combining zinc iodide (ZnI<sub>2</sub>) as redox electrolyte with nanoporous activated carbon fiber (ACF) cathode and disk anode.
The carbon onion/birnessite-type manganese oxide nanohybrid symmetric pseudocapacitor exhibits excellent capacitive properties compared to the conventional onion supercapacitor.
Capacitive deionization (CDI) is a promising salt removal technology with high energy efficiency when applied to low molar concentration aqueous electrolytes. As an interfacial process, ion electrosorption during CDI operation sensitive the pore structure and total volume of carbon electrodes limits maximum adsorption capacity (SAC). Thus, activation carbons as widely used method enhance porosity material should also be highly attractive for improving SAC values. In our study, we use...
Low aspect ratios and sp<sup>3</sup> hybridization of carbon nanoparticles benefit both, small agglomerate sizes in ethylene glycol nickel composites.
Supercapacitor performance can be significantly increased when matching a suitable ionic liquid to nitrogen-doped nanoporous carbon.
Electrospun niobium carbide/carbon nanofibers are a facile precursor to derive highly nanoporous carbide-derived carbon for supercapacitor applications, or pentoxide/carbon battery electrodes.
Abstract The energy performance of carbon onions can be significantly enhanced by introducing pseudocapacitive materials, but this is commonly at the cost power handling. In study, a novel synergistic electrode preparation method was developed using carbon‐fiber substrates loaded with quinone‐decorated onions. electrodes are free standing, binder free, extremely conductive, and interfiber space filling overcomes severely low apparent density found for electrospun fibers. Electrochemical...
Redox active electrolytes in combination with nanoporous carbon electrodes combine high power energy storage performance metrics.
Atomic layer deposition (ALD) is a facile process to decorate carbon surfaces with redox-active nanolayers. This particularly attractive route obtain hybrid electrode materials for high performance electrochemical energy storage applications. Using activated and onions as representatives of substrate large internal or external surface area, respectively, we have studied the enhanced capacity vanadium oxide coatings. While porosity readily becomes blocked by obstructing nanopores, enable...
Combining the intercalation mechanisms of <italic>C</italic>2/<italic>m</italic> VO<sub>2</sub> (battery-like) and <italic>P</italic>2<sub>1</sub>/<italic>c</italic> (pseudocapacitive) drastically improves rate behavior.
Merging of supercapacitors and batteries promises the creation electrochemical energy storage devices that combine high specific energy, power, cycling stability. For purpose, lithium-ion capacitors (LICs) store by lithiation reactions at negative electrode double-layer formation positive are currently investigated. In this study, we explore suitability molybdenum oxide as a material in LICs for first time. Molybdenum oxide–carbon nanotube hybrid materials were synthesized via atomic layer...
Abstract Copper kills bacteria rapidly by a mechanism that is not yet fully resolved. The antibacterial property of copper has raised interest in its use hospitals, place plastic or stainless steel. On the latter surfaces, can survive for days even weeks. surfaces could thus provide powerful accessory measure to curb nosocomial infections. We here investigated effect surface structure on efficiency contact killing Escherichia coli , an aspect which so far received very little attention. It...
Electrospinning is a facile technology for the generation of metal oxide/carbon and carbide/carbon nanocomposite fibers.
Inverse vulcanization was used to create carbon onion/sulfur hybrid cathodes for lithium–sulfur battery applications.