Skip to main content

Show Image [ubt]

You are here:

News

Tuning of composition and morphology of LiFePO4 cathode for applications in all solid-state lithium metal batteries

Written by Mukundan Thelakkat

Harimohan published a detailed study of influence of composition, morphology and additives on performance of LiFePO4 cathode for applications in all solid-state lithium metal batteries in Scientific Reports, 12(1):5454, 2022. This is very useful for all groups working in all solid state batteries

High electron mobility and tuneable glass transition temperature in fullerene-functionalized polynorbornenes

Written by Mukundan Thelakkat

Andreas published record bulk electron mobilities for fullerene-functionalized polynorbornenes with tuneable glass transition temperature an fullerene contents. The blk charge carrier mobilities were determined in SCLC devices. DOI: 10.1039/D2TC00496H  J. Mater. Chem. C, 2022, Advance Article

Solid polymer electrolytes from polyesters with diester sidechains for lithium metal batteries

Written by Mukundan Thelakkat

Dominic, Alexander and Harimohan published together a new concept for matrix polymers based on polyesters to realize solid polymer electrolytes with high lithium transport number as well as good specific capacity retention in a wide range of T of 40-80°C and even at high C-rates in solvent-free all solid-state Lithium metal batteries. J. Mater. Chem. A,  2022, https://doi.org/10.1039/D2TA00800A

Prof. Thelakkat is visiting Faculty at JNCASR, Bangalore

Written by Mukundan Thelakkat

Under the VAJRA scheme of the Department of Science and Technology, India, Prof. Thelakkat started the visiting faulty position. It involves teahing and research at JNCASR, Bangalore and interactions with other research institutions of interest in India. Teaching classes and practical on New Generation Solar Cells werde conducted for a period of about 3-4 weeks.

Multielectron-acceptor salts of hole conductors as elegant p-dopants

Written by Mukundan Thelakkat

We report the high efficacy of p-doping of conjugated polymers using the HOMO-SOMO(HOMO)-doping process involving multi cation salts capable of accepting more than one electron per dopant. In this concept, one can rediuce the molar dopant ratio radically and still achieve appreciably good charge carrier density and high conductivity for low degrees of doping below 5 mol%. The main credit goes to Gert and Adrian ! See Macromolecular Rapid Communications, 2021, 42, 2100443; https://doi.org/10.1002/marc.202100443

Image removed.

PDPPs showing high cycling stability and cell viability for OECTs

Written by Mukundan Thelakkat

A comprehensive investigation of four polydiketopyrrolopyrroles (PDPPs) with increasing ethylene glycol (EG) content and varying nature of comonomer is studied, and guidelines for the design of efficient mixed ion‐electron conductors (MIECs) are published in Adv. Funct. mater. 2021. A considerable cycling stability for 1200 cycles and an outstanding cell compatibility render these PDPPs as viable candidates for in vitro and in vivo bioelectronics.

A paradigm shift in doping p-type conjugated polymers published in Adv. Mater. 2020

Written by Mukundan Thelakkat

We reported in Adv. Mater. 2020, a new doping strategy by mixing a hole conductor having partly filled HOMO and a conjugated polymer having fully occupied HOMO resulting in a HOMO-HOMO electron transfer. This was a joint research work with the Pflaum group of University of Würzburg. This concept opens new routes to dope p-type organic semiconductors to obtain highly stable doped systems. It also does not require any acceptor dopant molecule such as a fluorinated TCNQ derivative having low lying LUMO values.

Full-fledged measurement setup for OECTs established at AFUPO

Written by Mukundan Thelakkat

Congrats Philip and his team! Philip, Jonas, Adrian and Florian have established a measurement setup for electrochemical transistors at AFUPO in our research building PNS. This setup is long overdue and allows us to study diverse mixed ion-electron conductor materials available in our research group.

Three new Master students, Julian, Lukas and Linus join AFUPO in June 2020

Written by Mukundan Thelakkat

Three new Master students, - Julian Hungenberg and Linus Hager (Bioelectronics) and Lukas Conrad Hennerici (Cathode Materials for Batteries) - joined AFUPO in June 2020. Welcome to AFUPO family.

 

Working during the extraordinary time of a COVID-19 pandemic

Written by Mukundan Thelakkat

Our research group has adapted to the constraints of the COVID-19 pandemic and all research students and Masters have returned stepwise and are working now regularly in the lab. Some are finishing their pending papers or thesis. We also have regular research seminars and literature discussion meetings in Zoom/Skype every week. I take this opportunity to thank all my group members for having the patience and understanding the situation and managing things efficiently in an extraordinary time. We hope to sit together and discuss things in person soon. We also wish all our research partners within and outside Germany healthy days, weeks and months.