Research group Prof. Dr. Jürgen Janek
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- Recent Publications
LATP and LiCoPO4 thin film preparation–Illustrating interfacial issues on the way to all-phosphate SSBs
P. Hofmann, F. Walther, M. Rohnke, J. Sann, W. G. Zeier, and J. Janek, Solid State Ion. 342 (2019) 115054; find paper here
Experimental Assessment of the Practical Oxidative Stability of Lithium Thiophosphate Solid Electrolytes
G. F. Dewald, S. Ohno, M. A. Kraft, R. Koerver, P. Till, N. M. Vargas-Barbosa, J. Janek, and W. G. Zeier, Chem. Mater. (2019); find paper here
Lithium-Metal Growth Kinetics on LLZO Garnet-Type Solid Electrolytes
T. Krauskopf, R. Dippel, H. Hartmann, K. Peppler, B. Mogwitz, F. H. Richter, W. G. Zeier, and J. Janek, Joule 3 (2019) 2030-2049; find paper here
Interfacial stability of phosphate-NASICON solid electrolytes in Ni-rich NCM cathode-based solid-state batteries
T. Yoshinari, R. Koerver, P. Hofmann, Y. Uchimoto, W. G. Zeier, and J. Janek, ACS Appl. Mater. Interfaces (2019); find paper here
Guidelines for all-solid-state battery design and electrode buffer layers based on chemical potential profile calculation
T. Nakamura, K. Amezawa, J. Kulisch, W. G. Zeier, and J. Janek, ACS Appl. Mater. Interfaces (2019); find paper here
- Picture of the month - August 2019
Here you can find alternating insights into our research group. Enlarged versions of all published pictures can be found here.
Atomic Force Microscopy (AFM) is a method of characterizing a sample surface by passing a tip close to the surface to be examined. By measuring the atomic forces between the tip and the surface by means of the deflection of the tip, it is possible to obtain information about the topography of the surface or to determine the magnetic and chemical properties of the surface. The picture on the left shows the topography of a cathode for lithium-ion batteries investigated by AFM, in which as active material secondary particles of Li(Ni,Co,Mn)O2 with a diameter of a few micrometers are embedded in carbon. In the right image, an electrically conductive tip was used during the AFM measurement to examine the electrical conductivity of the cathode at the surface. Clearly recognizable is the impact of carbon as conductive additive, since an electrical current is measured mainly in the region, where carbon is found. (Picture submitted by Miguel Wiche and Matthias Elm).
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