Personal tools

Information zum Seitenaufbau und Sprungmarken fuer Screenreader-Benutzer: Ganz oben links auf jeder Seite befindet sich das Logo der JLU, verlinkt mit der Startseite. Neben dem Logo kann sich rechts daneben das Bannerbild anschließen. Rechts daneben kann sich ein weiteres Bild/Schriftzug befinden. Es folgt die Suche. Unterhalb dieser oberen Leiste schliesst sich die Hauptnavigation an. Unterhalb der Hauptnavigation befindet sich der Inhaltsbereich. Die Feinnavigation findet sich - sofern vorhanden - in der linken Spalte. In der rechten Spalte finden Sie ueblicherweise Kontaktdaten. Als Abschluss der Seite findet sich die Brotkrumennavigation und im Fussbereich Links zu Barrierefreiheit, Impressum, Hilfe und das Login fuer Redakteure. Barrierefreiheit JLU - Logo, Link zur Startseite der JLU-Gießen Direkt zur Navigation vertikale linke Navigationsleiste vor Sie sind hier Direkt zum Inhalt vor rechter Kolumne mit zusaetzlichen Informationen vor Suche vor Fußbereich mit Impressum

Document Actions

Research group Prof. Dr. Jürgen Janek

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

New PhD projects available in the field of Solid State Batteries. In case of interest please contact directly Prof. Janek.

Welcome to our homepage!

RG Janek stats summer 2014

The research of our group is directed towards the physicochemical basis of solid state processes, that are important for modern energy and interface technologies.

 

 

Recent Publications

Towards zinc-oxygen batteries with enhanced cycling stability: The benefit of anion-exchange ionomer for zinc sponge anodes
D. Stock, S. Dongmo, K. Miyazaki, T. Abe, J. Janek, D. Schröder, J. Power Sources 395 (2018) 195-204; find paper here

 

Degradation Mechanisms at the Li10GeP2S12/LiCoO2 Cathode Interface in an All-Solid-State Lithium-Ion Battery
W. Zhang, F. H. Richter, S. P. Culver, T. Leichtweiss, J. G. Lozano, C. Dietrich, P. G. Bruce, W. G. Zeier, J. Janek, ACS Appl. Mater. Interfaces (2018); find paper here

 

Structural analysis and electrical characterization of cation-substituted lithium ion conductors Li1-xTi1-xMxOPO4 (M = Nb, Ta, Sb)
P. Hofmann, J. Ariai, A. Zaichenko, J. Janek, D. Mollenhauer, W. G. Zeier, J. Solid State Ionics 319C (2018) 170-179; find paper here

 

Homogeneous Coating with an Anion-Exchange Ionomer Improves the Cycling Stability of Secondary Batteries with Zinc Anodes
D. Stock, S. Dongmo, F. Walther, J. Sann, J. Janek , and D. Schröder, ACS Appl. Mater. Interfaces, 2018; find paper here

 

Synthesis and characterization of polyphosphazene electrolytes including cyclic ether side groups
C. Fiedler, B. Luerssen, B. Lucht, J. Janek, J. Power Sources 384 (2018) 165-171; find paper here

Picture of the month - July 2018

Here you can find alternating insights into our research group. Enlarged versions of all published pictures can be found here.

The two pictures show the chamber inside of our new Xe plasma FIB SEM (XEIA3, Tescan) and the preparation process for the cross section of a zinc sponge which incorporates an ionomer. At first, a trench was made with the highest milling rate in about 2 hours, followed by polishing with two successive steps of an intermediated and a low milling rate for about 1 hour. The cross section shown is the first cross section made in our new FIB SEM. The sample was investigated within Project Zisabi (in cooperation with Prof. Abe, Kyoto University, Japan; funded by the German Federal Ministry of Education and Research), where we look at the influence of anion-exchange ionomers on structured zinc anodes to stabilize the electrochemical deposition and dissolution processes during cycling.For more information, please contact Boris Mogwitz and Klaus Peppler. Publication on this topic:Stock, D. et al. Towards zinc-oxygen batteries with enhanced cycling stability: The benefit of anion-exchange ionomer for zinc sponge anodes. J. Power Sources 395, 195–204 (2018).(Picture submitted by Daniel Stock, Boris Mogwitz and Klaus Peppler.)

The two pictures show the chamber inside of our new Xe plasma FIB SEM (XEIA3, Tescan) and the preparation process for the cross section of a zinc sponge which incorporates an ionomer. At first, a trench was made with the highest milling rate in about 2 hours, followed by polishing with two successive steps of an intermediated and a low milling rate for about 1 hour. The cross section shown is the first cross section made in our new FIB SEM. 

The sample was investigated within Project Zisabi (in cooperation with Prof. Abe, Kyoto University, Japan; funded by the German Federal Ministry of Education and Research), where we look at the influence of anion-exchange ionomers on structured zinc anodes to stabilize the electrochemical deposition and dissolution processes during cycling.

For more information, please contact Boris Mogwitz and Klaus Peppler.

Publication on this topic:

Stock, D. et al. Towards zinc-oxygen batteries with enhanced cycling stability: The benefit of anion-exchange ionomer for zinc sponge anodes. J. Power Sources 395, 195–204 (2018).

(Picture submitted by Daniel Stock, Boris Mogwitz and Klaus Peppler.)

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

"Festelektrolyte als Enabler für Lithium-Zellen In Automobilen Anwendungen"

BMBF-Projekt FELIZIA

"Festelektrolyte als Enabler für Lithium-Zellen In Automobilen Anwendungen"

BMBF

BMBF-Projekt BenchBatt

"Benchmarking und Evaluation der Leistungsfähigkeit und Kosten von Hochenergie- und Hochvolt-Lithium-Ionen-Batterien im Vergleich zu Post-Lithium-Ionen-Technologien"

BMBF-Projekt Zisabi

BMBF-Projekt Zisabi

"Zink-Sauerstoff-Batterien mit Ionenaustausch-Membran als Post-Lithiumionen-Technologie"

LOGO BMEL

BMEL-Projekt FOREST

New Lignin-based electrolytes for redox-flow batteries - Future Organic Electrolyte for Energy Storage

BMBF-Projekt MeLuBatt

BMBF-Projekt MeLuBatt 

"Frischer Wind für Metall/Luftsauerstoff-Batterien:
Was man von Lithium-Ionen-Batterien lernen kann"

German Israeli Battery School

German Israeli Battery School