A5041814707- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Characterization and Applications of Magnetic Nanoparticles
- Advanced Battery Technologies Research
- Extraction and Separation Processes
- Geomagnetism and Paleomagnetism Studies
- Advancements in Battery Materials
- Aerogels and thermal insulation
- Silicon and Solar Cell Technologies
- Cavitation Phenomena in Pumps
- Advanced Battery Materials and Technologies
- Copper-based nanomaterials and applications
- Advanced Photocatalysis Techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Phase Equilibria and Thermodynamics
- Minerals Flotation and Separation Techniques
- Nanofabrication and Lithography Techniques
- Life Cycle Costing Analysis
- Catalysis and Oxidation Reactions
- Smart Agriculture and AI
- Silicon Nanostructures and Photoluminescence
- Photovoltaic Systems and Sustainability
- Markov Chains and Monte Carlo Methods
- Electromagnetic wave absorption materials
- Metallic Glasses and Amorphous Alloys
Friedrich-Alexander-Universität Erlangen-Nürnberg
2021-2025
Fraunhofer Institute for Silicate Research
2020-2025
Fraunhofer Institute for Solar Energy Systems
2017-2023
Leibniz University Hannover
2014-2019
University of Rostock
2016
Fraunhofer Society
2012
TU Dresden
2009
University of Siegen
2003-2004
Vattenfall (Sweden)
1998
KTH Royal Institute of Technology
1998
Abstract This roadmap presents the transformational research ideas proposed by “BATTERY 2030+,” European large‐scale initiative for future battery chemistries. A “chemistry‐neutral” to advance research, particularly at low technology readiness levels, is outlined, with a time horizon of more than ten years. The centered around six themes: 1) accelerated materials discovery platform, 2) interface genome, integration smart functionalities such as 3) sensing and 4) self‐healing processes....
Hydrogels are fabricated from CdSe/CdS seeded nanorod building blocks by the addition of hydrogen peroxide and converted to aerogels supercritical drying. The show higher photoluminescence quantum yields longer lifetimes than hydrogels nanoparticle solutions. A model for this observation is derived.
Abstract The indispensable transformation to a (more) sustainable human society on this planet heavily relies innovative technologies and advanced materials. merits of nanoparticles (NPs) in context are demonstrated widely during the last decades. Yet, it is believed that impact particle‐based nanomaterials sustainability can be even further enhanced: taking NPs as building blocks enables creation more complex entities, so‐called supraparticles (SPs). Due their evolving phenomena coupling,...
Localized surface plasmon resonances (LSPRs) of degenerately doped copper chalcogenide nanoparticles (NPs) (Cu2-xSe berzelianite and Cu1.1S covellite) have been modified applying different methods. The comparison the cation exchange (Cu2-xSe) intercalation (Cu1.1S) Ag(I) Cu(I) has shown that causes a non reversible, air stable shift LSPR. This was compared to influence Au(I) into platelets under formation Cu1.1S-Au2S mixed nanoplatelets. Furthermore, we show growth Au domains on Cu2-xSe,...
Abstract Magnetic supraparticles (SPs) can be employed as micron‐sized particulate additives in arbitrary objects to serve ID‐tag or recorder of environmental triggers. Combined with magnetic particle spectroscopy (MPS), which enables read‐out the information ambient conditions within seconds, SPs represent a powerful approach equip materials information. The encoded relies on interactions ( intra ‐SP interactions) chosen nanoparticles (NPs). However, possible between inter‐ SP...
A variety of new ternary and quaternary metal–semiconductor inorganic nanostructures with unprecedented structural morphologies is achieved by the decoration five monolayer‐thick CdSe/CdS core/crown nanoplatelets Au Pt domains. Significant differences in metal growth behavior are observed varying CdSe core CdS crown dimensions. Depending on size, can be directed only to edges, or both at edges center nanoplatelets. In contrast, nucleation domains always happens independently Furthermore,...
The recombination parameter <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">J</i> <sub xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> xmlns:xlink="http://www.w3.org/1999/xlink"><sub>s</sub></i> provides an important metric to characterize surface recombination. For its calculation, numerous methods and models have be applied. Since the for Auger radiative in crystalline silicon were recently revised, it is investigate influence of these...
Bone loss in the near-vicinity of implants can be a consequence stress shielding due to stiffness mismatch. This avoided by reducing implant stiffness, i.e., implementing an open-porous structure. Three designs were therefore investigated (cubic, pyramidal and twisted design). Scaffolds fabricated selective laser-melting (SLM) process material properties determined conducting uniaxial compression testing. The calculated elastic modulus values for scaffolds varied between 3.4 26.3 GP scaffold...
In this communication we present a synthetic pathway toward CdSe@CdS/ZnS nanorods which are built in segment like manner (a CdSe core is embedded CdS rod then epitaxially ends ZnS rod). This structure realized exploiting sequential cation exchange mechanism. first step, CdSe@CdS rods transformed into CdSe@CdS/Cu2-xS rods. second the latter ones converted By varying amount of Cu+ precursor Cd2+ to ion phase boundary between and can be shifted controlled manner. finding nicely demonstrates...
Abstract Superparamagnetic iron oxide nanoparticles (SPIONs) are prone to oxidation at elevated temperatures (>300 °C) and lose their magnetizability upon transition from magnetite/maghemite (γ‐Fe 2 O 3 / Fe 4 ) hematite (α‐Fe ). Silica (SiO shells can effectively prevent this undesired effect up ≈1000 °C. Herein, the study shows how utilize SPIONs with varying SiO shell thickness thus, different susceptibility, combine them in micrometers sized assemblies – so‐called supraparticles...
Induction heating of composite materials is great interest in fields such as controlled polymer curing or degradation, self-healing contactless joining. Ferrimagnetic iron oxide nanoparticle (IONPs) are suitable candidates for a powder additive to provide this indictive functionality, while being low-cost, abundant and well-studied material class. Varying IONP size, morphology doping facilitate fine-tune properties. However, the interactions additives composites often neglected can...
Recycling of lithium-ion batteries will become imperative in the future, but comprehensive and sustainable processes for this are still rather lacking. Direct recycling comprising separation black mass components as a key step is regarded most seminal approach. This paper contributes novel approach such separation, that fractionation tubular centrifuge. An aqueous dispersion cathode materials (lithium iron phosphate, also referred to LFP, carbon black) serves exemplary feed be fractionated,...
The market share of low-cost battery chemistries, which offer little to no recycling profitability with current methods, is growing. Design for circularity could be the key reducing costs and enhancing sustainability these batteries.
We report on the effect of ligand exchange Cu2SeyS1–y and Cu2Se nanocrystals (NCs) with organic π-system cobalt β-tetraaminophthalocyanine (CoTAPc) analyze changes in structural, optical, electric properties thin films these hybrid materials. A strong interaction surface NCs is revealed by UV/vis absorption Raman spectroscopy. Grazing-incidence small-angle X-ray scattering studies show a significant contraction interparticle distance upon exchange. For copper-deficient Cu2–xSe, this has...
Copper chalcogenides are the focus of research due to their abundant elements and low toxicity. In particular, plasmonic Cu2–xSe Cu1.1S NPs represent a main topic recent efforts postsynthetic tunability localized surface plasmon resonance (LSPR). this paper, we describe growth Cu2–xSe–CuPt Cu1.1S–Pt hybrid nanoparticles. both systems investigate quenching LSPR in relation Pt ratios. The resulting particles form cubic CuPt domain during process. On platelets, several, 2–3 nm sized domains...
Composites of nanoparticles (NPs) in metal–organic frameworks (MOFs) combine the versatile properties NPs with defined porosity MOFs. Here, we show encapsulation plasmonic semiconductor ZIF-8 crystals. Both p-type and n-type doped (consisting Cu2–xSe indium tin oxide, respectively) are encapsulated. The structural each system preserved during formation composites. Furthermore, demonstrate accessibility integrated via successful first-time situ cation exchange MOF-embedded to HgSe Ag2Se NPs....
Avoiding harmful passivation of the lithium metal surface during its implementation as an anode material is a challenge to use in rechargeable batteries. It critical control chemical composition and morphology native layer avoid contamination by lubricants or other substances involved processing. Herein, abrasive blasting used physical method achieve clean 3D‐structured electrodes. The careful choice agent parameters results well‐controlled properties. blasted electrodes exhibit...
Abstract To tailor superparamagnetic iron oxide nanoparticles (SPIONs) to the specific needs of diverse application fields, it is essential understand not only their intrinsic properties but also interactions with each other. Theoretical models predicting/explaining magnetization behavior macroscopic samples containing millions SPIONs are intricate due complexity underlying relaxation mechanisms in alternating fields. This study introduces supraparticles (SPs) as model architectures...
Addressing the grand challenges in electrochemical energy systems is often motivated by improving sustainability conversion and storage. However, design of materials, components for storage devices, particular batteries, prioritizes performance cost. Sustainability comes third, as, historically, a focus on advancements has incurred penalties terms and/ or cost most conventional products. This interplay will certainly evolve coming years. Ecological social aspects driven legislative...
The fabrication of gels from semiconductor nanoparticles by means a controlled and optimized destabilization process is investigated N. C. Bigall co-workers on page 6152. Aerogels with high photoluminescence quantum yield ultra-long radiative lifetimes are fabricated CdSe/CdS seeded nanorods. It shown that excited electrons can be delocalized within the aerogel monolith while, at same time, holes stay confined in CdSe cores. This type assembly shows novel properties comparison to those...