Assoc. Prof. Dr. Aruna Kalasapurayil is a guest in our group after obtaining the Short Term Fellowship of International Humboldt Centre of Bayreuth
Dr. Aruna from Rathinam College, Coimbatore is a specialist for electrocatalysis using diverse semiconductors. She spends three weeks in our group.
Tuning of composition and morphology of LiFePO4 cathode for applications in all solid-state lithium metal batteries
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
Andreas published record bulk electron mobilities for fullerene-functionalized polynorbornenes with tuneable glass transition temperature and fullerene contents. The bulk charge carrier mobilities were determined in SCLC devices. DOI: 10.1039/D2TC00496H J. Mater. Chem. C, 2022, Advance Article
"BEYOND PEO" Solid polymer electrolytes from polyesters with diester sidechains for lithium metal batteries
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
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
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
PDPPs showing high cycling stability and cell viability for OECTs
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
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
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
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.