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Research group Prof. Dr. Jürgen Janek

Physical chemistry of solids – solid state ionics and electrochemistry
Current notice

Are you interested in joining our group? You can find current vacancies in the job market of JLU Giessen (FB 08, Biologie und Chemie, Physikalisch-Chemisches Institut). You are also welcome to receive further information by e-mail.

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

A Rapid and Facile Approach for the Recycling of High‐Performance LiNi1−x−yCoxMnyO2 Active Materials
J. O. Binder, S. P. Culver, W. G. Zeier, and J. Janek, ChemSusChem 13 (2020); find paper here

 

Physicochemical Concepts of the Lithium Metal Anode in Solid-State Batteries
T. Krauskopf, F. H. Richter, W. G. Zeier, and J. Janek, Chem. Rev. 120 (2020) 7745; find paper here

 

On the Influence of Carbon Additives on the Decomposition Pathways in Cathodes of Lithium Thiophosphate-based All-Solid-State Batteries
F. Walther, S. Randau, Y. Schneider, J. Sann, M. Rohnke, F. H. Richter, W. G. Zeier, and J. Janek, Chem. Mater. 32 (2020) 6123; find paper here

 

The Fast Charge Transfer Kinetics of the Lithium Metal Anode on the Garnet‐Type Solid Electrolyte Li6.25Al0.25La3Zr2O12
T. Krauskopf, B. Mogwitz, H. Hartmann, D. K. Singh, W. G. Zeier, and J. Janek, Adv. Energy Mater. 10 (2020) 2000945; find paper here

 

Importance of the Spin–Orbit Interaction for a Consistent Theoretical Description of Small Polarons in Pr-Doped CeO2
K. Michel, T. S. Bjørheim, T. Nordby, J. Janek, and M. T. Elm, J. Phys. Chem. C 124 (2020) 15831; 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"


Project ProLiFest (Refining and processing of lithium foils and electrodes for solid-state batteries)
BMBF Logo


BMBF-Projekt ALISS

"Aluminium-Ionen-Batterie für stationäre Speichersysteme"

 
BMBF Logo


BMBF-Projekt ELONGATE

"Liquid Electrolytes for Next-Generation Battery Systems: Study and Implications of Reactive Species Solubility and Diffusivity"
BMBF Logo

BMBF-Projekt FLiPS

"Feststoffbatterien mit Lithiummetall und Polymeren Schutzschichten"
BMBF Logo

BMBF-Projekt MaLiBa

"Maßgeschneiderte Lithium-Metall-Anoden für zukünftige Batteriesysteme"
BMBF Logo

BMBF-Projekt MaLiBa

"Maßgeschneiderte Lithium-Metall-Anoden für zukünftige Batteriesysteme"

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)
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BMBF - Deutsch-Taiwanesisches Programm

Projekt "EvaBatt"
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BMBF - Deutschland-USA (DE-US)

Projekte "LiSi" und "CatSE"
DFG-logo

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

German Israeli Battery School

 

Kooperationsprojekt mit Volkswagen AG "Modellierung von Feststoffbatterien"