A5074363193- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Extraction and Separation Processes
- Semiconductor materials and devices
- Ferroelectric and Piezoelectric Materials
- Carbon dioxide utilization in catalysis
- Perovskite Materials and Applications
- Layered Double Hydroxides Synthesis and Applications
- Electromagnetic wave absorption materials
- Supercapacitor Materials and Fabrication
- Semiconductor materials and interfaces
- Thermal Expansion and Ionic Conductivity
- Advanced Battery Technologies Research
- Photorefractive and Nonlinear Optics
- Microwave Dielectric Ceramics Synthesis
- Polyoxometalates: Synthesis and Applications
- biodegradable polymer synthesis and properties
Forschungszentrum Jülich
2019-2024
University of Duisburg-Essen
2021-2022
Institute of Inorganic Chemistry of the Slovak Academy of Sciences
2019
RWTH Aachen University
2019
FH Aachen
2019
Garnet-based all-solid-state batteries (ASBs) with high energy density require composite cathodes areal loading and high-capacity cathode active materials. While all ceramic can typically be manufactured via cosintering, the elevated temperatures necessary for this process pose challenges respect to material compatibility. High-capacity materials like Ni-rich LiNixCoyMn1–x–yO2 (NCM) show insufficient compatibility toward solid electrolyte Li6.45Al0.05La3Zr1.6Ta0.4O12 (LLZO:Ta) during leading...
In this processing study we systematically investigate the impact of lithium excess and dwell time on Ga-substituted LLZO:Ga show that Li-excess during synthesis is a critical parameter to obtain peak performance.
Doping of Ni-rich cathode active materials with boron is a promising way to improve their cycling stability and mitigate degradation, but it still not understood how this effect achieved where the located. To receive deeper insights into impact doping on atomic microscale properties, B-doped Li[Ni0.8Co0.1Mn0.1]O2 (NCM811) were synthesized by hydroxide coprecipitation as model compound verify presence location in B-doped, NCM, well its microstructure electrochemical combined experimental...
Abstract In the present work, we applied cold sintering for processing of Li1.3Al0.3Ti1.7(PO4)3 (LATP) and then LiMn2O4/LATP/Carbon black composite cathode. Their high-temperature is challenging due to Li evaporation undesirable diffusion between electrode electrolyte, leading high interfacial resistance these components. Cold can be an option address problems. For sintered LATP, X-ray diffraction analysis displayed only a minor amount secondary phases, photoelectron spectroscopy showed...
Four non-toxic, highly active and robust complexes have been used in the ring opening polymerisation of non-purifed lactide to substitute Sn(Oct)<sub>2</sub>.
In this work, the effects of dopant size and oxidation state on structure electrochemical performance LiNi
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...
Abstract Very high theoretical specific energies and abundant resource availability have emerged interest in primary Si–air batteries during the last decade. When operated with highly doped Si anodes EMIm(HF) 2.3 F ionic liquid electrolyte, up to 1660 Wh kg −1 can be realized. Owing their high-discharge voltage, most investigated anode materials are $$\langle 100\rangle$$ <mml:math...
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...
This study provides for the first time a detailed investigation of cold sintering LiMn 2 O 4 (LMO). Aqueous based aid facilitated densification LMO at lower temperature range 400 °C to 600 within dwell merely 1 min relative density 70%–80%, without any non—stoichiometry or need post annealing in air atmosphere. Connected porosity was observed sintered structure as confirmed by Mercury porosimetry and scanning electron microscopy analysis. Cold dry milled delivered specific discharge capacity...
All solid-state batteries (ASB) are an emerging energy storage technology, which is expected to improve the safety on cell level and increase battery density. One of important issues in development bulk-type ASBs with a high density possibility processing thick composites cathodes percolating pathways for ion electron transport. For ceramic electrolytes such as garnet-type Ta-substituted LLZ (Li 6.6 La 3 Zr 1.6 Ta 0.4 O 12 ; LLZ:Ta) practical realization composite however challenging due...