A5008374467- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Thermal Expansion and Ionic Conductivity
- Electronic and Structural Properties of Oxides
- Inorganic Chemistry and Materials
- Layered Double Hydroxides Synthesis and Applications
- Advancements in Solid Oxide Fuel Cells
- High-Temperature Coating Behaviors
- Solid-state spectroscopy and crystallography
- Supercapacitor Materials and Fabrication
- Fuel Cells and Related Materials
- X-ray Diffraction in Crystallography
- Nanoplatforms for cancer theranostics
- Electrocatalysts for Energy Conversion
- Coal Combustion and Slurry Processing
- Biosensors and Analytical Detection
- Catalytic Processes in Materials Science
- Materials Engineering and Processing
- Nuclear Materials and Properties
- Ferroelectric and Piezoelectric Materials
- Nuclear Physics and Applications
- Ammonia Synthesis and Nitrogen Reduction
- Catalysis and Hydrodesulfurization Studies
- Silicon Nanostructures and Photoluminescence
University of Siegen
2022-2025
Forschungszentrum Jülich
2021-2024
University of Duisburg-Essen
2022-2024
Jülich Aachen Research Alliance
2022
Abstract Solid‐state batteries (SSBs) with a Li 7 La 3 Zr 2 O 12 (LLZO) garnet electrolyte are attracting much attention as robust and safe alternative to conventional lithium‐ion batteries. Technical challenges in the practical implementation of SSBs related need for high‐temperature sintering, which often leads undesirable chemical reactions cathode material. While these well understood composite cathodes, very little is known about similar processes between separator during battery...
Investigating thermal material properties such as conductivity ( κ ), specific heat capacity C p ) and decomposition temperature of Ta- Al-substituted solid state electrolyte Li 7 La 3 Zr 2 O 12 (LLZO) in dependency grain size.
Targeted phase engineering of nanomaterials through non-equilibrium synthesis strategies provides a rich platform for the development and tuning nanostructured catalysts with outstanding properties life-time. Unconventional phases or even complex heterostructures play crucial role in performance efficient water electrolysis. By utilizing controlled, iterative reduction route, tailored binder-free cobalt boride-phosphite electrode (CoxB-[0.2]P-O) mixed crystalline-amorphous is developed. The...
Abstract We present direct evidence, for the first time, flash‐induced generation of crystal defects in single‐crystal cubic zirconia. The are characterized by multiple techniques. crystals were flashed and then cooled down to ambient temperature Ar atmosphere preserve electronic conductivity from steady state flash. Transmission electron microscopy revealed colonies defects. structure, non‐stoichiometry, structure oxygen ions within these characterized. They consist oxygen‐depleted...
Polymer–ceramic all-solid-state Li batteries (ASSLBs) combine the advantages of fully inorganic and polymer-based ASSLBs. In particular, application proposed polymer–ceramic composite cathodes could be essential for enhancement energy storage capacity The use a modified field-assisted sintering technique with adjustable pressure alternative mica foil enables fabrication porous at reduced temperature without side phase formation. This allows LiCoO2/Li7La3Zr2O12:Ta network suitable polymer...
A systematic and comprehensive study of the thermal stability cathode active materials LiNi1/3Mn1/3Co1/3O2 (NMC111), LiNi0.6Mn0.2Co0.2O2 (NMC622), LiNi0.8Mn0.1Co0.1O2 (NMC811), LiNi0.8Co0.15Al0.05O2 (NCA) in combination with garnet solid electrolyte Li6.45La3Zr1.6Ta0.4Al0.05O12 was performed, respective limits air were assessed. Compared to prior studies on such material mixtures, additional Zr-containing secondary phases detected, which had not been taken into consideration a previously...
The phosphate lithium-ion conductor Li1.5Al0.5Ti1.5(PO4)3 (LATP) is an economically attractive solid electrolyte for the fabrication of safe and robust solid-state batteries, but high sintering temperatures pose a material engineering challenge cell components. In particular, surface roughness composite cathodes resulting from enhanced crystal growth detrimental to their integration into cells with practical energy density. this work, we demonstrate that efficient free-standing ceramic LATP...
Y-doped BaZrO3 is a well-researched material for proton-conducting fuel cells. One of the main limitations very high sintering temperature (~ 1600 °C) necessary to densify material. As Ba lost at this due BaO evaporation, stoichiometry changed uncontrollably. This study focused on evaluating influence slight changes in microstructure, chemical stability, and conductivity 20% (BZY20) as well 10% Y- Sc-co-doped (BZY10Sc10). Overall, excess resulted denser microstructures with larger grains....
Garnet-structured Li7La3Zr2O12 (LLZO) is an attractive electrolyte for lithium solid-state batteries (SSBs), but its processing requires long sintering at temperatures above 1000 °C to achieve sufficient ionic conductivity. Such not only time and energy consuming, also leads undesirable material interactions. Therefore, a significant reduction of the very important future development garnet-based batteries. A promising method recently introduced photonic blacklight with light sources in UV...
Abstract Solid–state batteries based on Li 7 La 3 Zr 2 O 12 (LLZO) garnet electrolyte are a robust and safe alternative to conventional lithium‐ion batteries. However, the large‐scale implementation of ceramic composite cathodes is still challenging due complex multistep manufacturing process. A new one‐step route for direct synthesis LLZO during LLZO/LiCoO (LCO) cheap precursors utilizing industrially established tape casting process presented. It shown that Al, Ta:LLZO can be formed...
Solid-state batteries (SSBs) are a promising technology for high travelling ranges and safety in future electromobility. In SSBs, separator liquid electrolyte materials combined solid-state layer. Possible SSBs ceramic oxides, example LiCoO2 (LCO) as cathode material Li7La3Zr2O12 (LLZO) material. By means of screen printing, mixed (mixture to have higher ionic conductivity the cathode) is applied on stainless steel current collector foil after thermal processing, printed top sintered create...
The fabrication, characterization and application of a nanoporous Silicon Rugate Filter (pSiRF) loaded with an enzymatically degradable polymer is reported as bare eye detection optical sensor for enzymes pathogenic bacteria, which devoid any dyes. nanopores pSiRF were filled poly(lactic acid) (PLA), which, upon enzymatic degradation, resulted in change the effective refractive index film, leading to readily discernible color sensor. shifts characteristic fringe patterns before after...
Oxidation of the bond coat during turbine operation leads to additional stresses in thermal barrier coating (TBC) system that promotes spalling insulation. Therefore, oxidation behavior a TBC plays an important role cycling system. To delay loss insulation, research has typically focused for long time on composition and microstructure ceramic topcoats metallic coats. More recently, heat treatment diffusion annealing also become focus research. Several studies have shown pre-oxidation prior...
All-solid-state batteries based on the active cathode material LiCoO2 (LCO), a garnet-type Li7La3Zr2O12 (LLZO) electrolyte and Li-metal anode are attracting lot of attention as robust safe alternative to conventional lithium-ion batteries. The challenges in practical realization such cells related high-temperature sintering, which compacts ceramic powder but also leads undesirable interactions cation interdiffusion secondary phase formation. Even if high initial capacities can be achieved,...
Columnar structured thermal barrier coatings (TBCs) have been intensively investigated due to their potential enhance the durability and reliability of gas turbine engine components. These consist vertically aligned columns that provide excellent resistance cycling. In this study, lifetime columnar suspension-plasma-sprayed (SPS) TBCs was evaluated using burner rig tests. The tests were carried out under high-temperature conditions. Significantly, pre-oxidation bondcoat during diffusion...
2021 International Conference on Solid State Devices and Materials ,Temperature Grain Size Dependent Thermal Material Parameters of Al Ta Substituted Li7La3Zr2O12 (LLZO) Electrolyte
Solid-State Lithium Batteries In article number 2302939, Walter Sebastian Scheld, Dina Fattakhova-Rohlfing, and co-workers show that, in addition to diffusion within the grains, non-uniform segregation of Co ions at grain boundaries leads formation Co-containing phases that strongly affect ionic electronic conductivity dendrite stability separator.
Correction for ‘Study of thermal material properties Ta- and Al-substituted Li 7 La 3 Zr 2 O 12 (LLZO) solid-state electrolyte in dependency temperature grain size’ by Julian Neises et al. , J. Mater. Chem. A 2022, 10 12177–12186, https://doi.org/10.1039/D2TA00323F.