News of the institute and the groups@ICTM

  new FWF project, interfaces in batteries

Daniel Rettenwander's proposal about interfacial effects in Li-based batteries has just been granted by the FWF. Together with the group of J. Fleig from TU Vienna and FELMI (Graz) electrochemical processes at interfaces in batteries will be studied. > 400 kEUR will now be devoted to explore ionic resistances and degradation processes to pave the way for next-generation batteries with ceramic electrolytes.

Non-fullerene acceptors

The photovoltaics group at ICTM investigated the effect of the polymer molecular weight on the performance of PTB7-Th:O-IDTBR non-fullerene organic solar cells together with researchers from the University of Nova Gorica and the University of Oldenburg. Thereby it was found that the change in performance is not primarily governed by the charge carrier mobility or the crystallinity of the conjugated polymer. Instead, activation energy for charge transport, carrier concentration and recombination rate are identified to strongly affect the device characteristics.

  Microcontact impedance spectroscopy

Microcontact impedance spectroscopy revealed a single Arrhenius behaviour of the bulk ionic conductivity in NASICON-based electrolytes; Daniel Rettenwander's study helps throw light on the complex interplay of synthesis history and transport properties in these electrolytes. See: Chem. Mater. 30 (2018) 1776.

https://twitter.com/WilkeningLab/status/988437609176272897

  NASICON solid electrolytes

In collaboration with FZ J├╝lich (group of F. Tietz) ICTM managed to separate bulk from grain boundary ionic resistance in well-known NASICON, being first described in the 70s by Goodenough and co-workers. See: Chem. Phys. Lett. 701 (2018) 147.


Congratulations to Dr. Lukas Schafzahl

March 23rd, 2018: Luki just passed his Rigorosum based on his PhD-work "Parasitic and Interphase Chemistries in Li-ion Batteries and Beyond" with excellence! Well done Dr. Schafzahl!
Luki will now continue his engagement at ICTM as Assistant Professor during the summer term 2018.

 

Chemical recycling of natural rubber waste

A team of researchers of ICTM disclosed the chemical recycling of natural rubber waste via a new degradation route allowing for a subsequent polymerization approach. Congratulations to Prof. Abbas and Max Neubauer for their great achievement!

 

Elucidation of the mechanism of carbonate decomposition in Li-oxygen batteries

Nika Mahne and Stefan Freunberger, in collaboration with the University of California-Berkeley, uncovered the mystery of the absence of oxygen evolvement during the decomposition of lithium carbonate, which is of far reaching relevance for almost all Li battery cathodes. The results of this endeavor have just been published in Angewandte Chemie as a VIP-article. Congratulations!

New paper on lead-free perovskite solar cells

Because of the toxicity of lead halide perovskites, there is currently growing interest to study lead-free perovskite materials for photovoltaic applications. Germanium halide perovskites have well-suited properties, however, mainly due to stability issues of this material, the performance of germanium perovskite based solar cells remained low so far.
Recently, researchers at ICTM found that a modification of the chemical composition, in particular, the introduction of bromide ions into the methylammonium germanium iodide perovskite, leads to a significant improvement of the solar cell performance along with a slight enhancement of the stability of the germanium perovskite. The according publication appeared in
ACS Applied Energy Materials.

Best wishes for the start of the Master theses of Elisabeth Kodolitsch and Florian Gobec

Feb. 26th, 2018: Elisabeth will do research on Olefin-Metathesis catalysts with cis-dichloro stereochemistry and Flo will work on novel clickable ligands for MOFs. All the best for their research!


Congratulations to Bettina Schafzahl!

Feb. 23rd 2018: Bettina defended her PhD thesis entitled "The Aprotic Li-O2 Battery - Fighting the Detrimental Impacts of Oxygen" with excellence! Well done Dr. Schafzahl!
Betti will now continue her engagement at ICTM as Assistant Professor during the summer term 2018.

Warm welcome to Efthymia Vakalopoulou

Feb. 7th, 2018: Efthymia will pursue research on emulsion templated elastomeric polymer-foams in the framework of a Master's thesis.

ICTM welcomes Katharina Kodolitsch

Feb. 1st 2018: Katharina will do her Master's thesis on novel linker-systems for metal organic frameworks.

  Congratulations to Julia Raunicher

Julia finished her Master studies by defending her thesis entitled "Latex blends - influence of the blending ratio on the mechanical properties" on Jan. 30th 2018. Well done Julia - congratulations!

Paper on advancing the analytics of batteries

Researchers of ICTM disclosed an accurate and integral quantification of carbonaceous species and peroxides or superoxides in battery electrodes by refining and advancing previous procedures. Congratulations to Bettina, Eleonore, Lukas, Yann and Anjana for their conscientious pieces of work making this methodological paper possible!

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