A5013992563- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Extraction and Separation Processes
Justus-Liebig-Universität Gießen
2019-2025
Large-scale industrial application of all-solid-state-batteries (ASSBs) is currently hindered by numerous problems. Regarding thiophosphate-based ASSBs, interfacial reactions with the solid electrolyte are considered a major reason for capacity fading. On positive electrode side, cathode active material coating addresses these issues and improves ASSB performance. Yet, working principle often remains unclear, protection concepts on way to long-term stable ASSBs remain empirical. In this...
Measures to improve the cycling performance and stability of bulk-type all-solid-state batteries (SSBs) are currently being developed with goal substituting conventional lithium-ion battery (LIB) technology. As known from liquid electrolyte-based LIBs, layered oxide cathode materials undergo volume changes upon (de)lithiation, causing mechanical degradation because particle fracture, among others. Unlike solid electrolytes, electrolytes somewhat capable accommodating morphological changes....
Sulfide-based electrolytes and Ni-rich cathode materials (i.e., LiNixCoyMn1–x–yO2, x ≥ 0.8) are considered as promising for high-performance solid-state batteries. However, their poor chemical compatibility causes stability issues fast capacity fading, particularly at high potentials. Here, we propose a coating concept inspired by the natural cathode–electrolyte interphase (CEI) formation to overcome degradation solid electrolyte–cathode active material interface. An artificial CEI (coating)...
Enabling simple three-electrode (3E) setups for solid-state battery cells is important allowing investigation of individual electrodes to shed more light on interface charge transfer and reactions occurring in cells. Two different 3E are compared, their practical value evaluated. A miniaturized reference electrode ( μ -RE) developed from lithium-plated gold wires with a tungsten core providing stable potential. Cells Li 6 PS 5 Cl as solid electrolyte, 1-x Ni 0.85 Co 0.10 Mn 0.05 O 2...
Fast and reliable evaluation of degradation performance cathode active materials (CAMs) for solid-state batteries (SSBs) is crucial to help better understand these systems enable the synthesis well-performing CAMs. However, there a lack well-thought-out procedures reliably evaluate CAMs in SSBs. Current approaches often rely on X-ray photoelectron spectroscopy (XPS) degradation. Unfortunately, XPS sensitivity not very high, minor but relevant products may be detected distinguished....
Measures to improve the cycling performance and stability of bulk-type all-solid-state batteries (SSBs) are currently being developed with goal substituting conventional Li-ion battery (LIB) technology. As known from liquid electrolyte based LIBs, layered oxide cathode materials undergo volume changes upon (de)lithiation, causing mechanical degradation due particle fracture, among others. Unlike solid electrolytes, electrolytes somewhat capable accommodating morphological changes. In SSBs,...
Measures to improve the cycling performance and stability of bulk-type all-solid-state batteries (SSBs) are currently being developed with goal substituting conventional Li-ion battery (LIB) technology. As known from liquid electrolyte based LIBs, layered oxide cathode materials undergo volume changes upon (de)lithiation, causing mechanical degradation due particle fracture, among others. Unlike solid electrolytes, electrolytes somewhat capable accommodating morphological changes. In SSBs,...