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Research group Prof. Dr. Jürgen Janek

Physical chemistry of solids – solid state ionics and electrochemistry
Welcome to our homepage!
AG Janek 2018

 

Die AG Janek erforscht physikalisch-chemische Grundlagen von Festkörperprozessen, die für moderne Energie- und Grenzflächentechnologien wichtig sind.

Recent Publications

Benchmarking the performance of all-solid-state lithium batteries
S. Randau, D. A. Weber, O. Kötz, R. Koerver, P. Braun, A. Weber, E. Ivers-Tiffée, T. Adermann, J. Kulisch, W. G. Zeier, F. H. Richter, and J. Janek, Nat. Energy 5 (2020) 259; find paper here

 

Incorporating Diamondoids as Electrolyte Additive into the Sodium Metal Anode to Mitigate Dendrite Growth
J. J. A. Kreissl, D. Langsdorf, B. A. Tkachenko, P. R. Schreiner, J. Janek, and D. Schröder, ChemSusChem (2020); find paper here

 

Modeling Effective Ionic Conductivity and Binder Influence in Composite Cathodes for All-Solid-State Batteries
A. Bielefeld, D. A. Weber, and J. Janek, ACS Appl. Mater. Interfaces (2020); find paper here

 

Interphase Formation of PEO20:LiTFSI–Li6PS5Cl Composite Electrolytes with Lithium Metal
F. J. Simon, M. Hanauer, F. H. Richter, and J. Janek, ACS Appl. Mater. Interfaces 12 (2020) 11713; find paper here

 

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
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)

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).

The WG Janek is involved in the following networks
Logo BASF BASF-Forschungsnetzwerk "Elektrochemie und Batterien"
FestBatt

BMBF-Kompetenzcluster für Festkörperbatterien "FestBatt"
BMBF Logo

BMBF-Projekt MaLiBa

"Maßgeschneiderte Lithium-Metall-Anoden für zukünftige Batteriesysteme"

BMBF Logo

BMBF-Projekt MeLuBatt

BMBF-Projekt MeLuBatt

 "Frischer Wind für Metall/Luftsauerstoff-Batterien:

Was man von Lithium-Ionen-Batterien lernen kann"
NASEBER

 BMBF-Projekt NASEBER

"Natriumbasierte feste Sulfid- und Oxid-Elektrolyt-Batterien"

BMBF Logo

BMBF - Deutsch-Japanisches Programm


Projekt "Osaban" (Operando surface analytics for batteries with
3D-structured metal anodes)

 

Projekt "InCa" (Interfaces in Composite All-solid-state Cathodes: Advanced Characterization and Optimization; 3D analysis of structured composite cathodes)
BMBF Logo

BMBF - Deutsch-Taiwanesisches Programm

Projekt "EvaBatt"
BMBF Logo

BMBF - Deutschland-USA (DE-US)

Projekte "LiSi" und "CatSE"
DFG-logo

DFG-Exzellenzinitiative - Cluster "POLIS"
German Israeli Battery School

German Israeli Battery School