Zeitschriftenaufsätze

Yi, Chang-Hwan; Kullig, Julius; Hentschel, Martina; Wiersig, Jan
Non-Hermitian degeneracies of internal-external mode pairs in dielectric microdisks. - In: Photonics research, ISSN 2327-9125, Bd. 7 (2019), 4, S. 464-472

https://dx.doi.org/10.1364/PRJ.7.000464

Mai, Sebastian; Wessel, Janine; Dimitrova, Anna; Stich, Michael; Ivanov, Svetlozar; Krischok, Stefan; Bund, Andreas
Nanoscale morphological changes at lithium interface, triggered by the electrolyte composition and electrochemical cycling. - In: Journal of chemistry, ISSN 2090-9071, (2019), Article ID 4102382, insges. 13 S.

https://doi.org/10.1155/2019/4102382

Schmidt, Leander; Schricker, Klaus; Bergmann, Jean Pierre; Hussenöder, Felix; Eiber, Mathias
Characterization of a granulate-based strand deposition process in the FLM-method for definition of material-dependent process strategies. - In: Rapid prototyping journal, ISSN 1758-7670, Bd. 25 (2019), 1, S. 104-116

https://doi.org/10.1108/RPJ-09-2017-0186

Matvienko, Tatiana; Sokolova, Viktoriya; Prylutska, Svitlana; Harahuts, Yuliia; Kutsevol, Nataliya; Kostjukov, Viktor; Evstigneev, Maxim; Prylutskyy, Yuriy; Epple, Matthias; Ritter, Uwe
In vitro study of the anticancer activity of various doxorubicin-containing dispersions. - In: BioImpacts, ISSN 2228-5660, Bd. 9 (2019), 1, S. 57-63

https://doi.org/10.15171/bi.2019.07

Wang, Hongmei; Yuan, Qian; Wang, Dong; Chen, Ge; Cheng, Xing; Kups, Thomas; Schaaf, Peter
Disordered surface formation of WS2 via hydrogen plasma with enhanced anode performances for lithium and sodium ion batteries. - In: Sustainable energy & fuels, ISSN 2398-4902, Bd. 3 (2019), 3, S. 865-874
Im Titel ist "2" tiefgestellt

Transition metal dichalcogenide (TMD) nanoparticles have attracted much attention recently for lithium and sodium ion batteries (LIBs and SIBs) due to their layered structures, which act as host lattices when reacting with ions to yield intercalation compounds. In the present article, WS2 nanoparticles are modified through hydrogen plasma treatment, and the hydrogenated WS2 (H-WS2) nanoparticles demonstrate clearly enhanced electrochemical performance as an anode material for LIBs and SIBs. H-WS2 nanoparticles are fabricated via hydrogen plasma treatment at 300 ˚C for 2 hours. A transmission electron microscopy (TEM) investigation shows that the nanoparticles have a disordered surface layer with a thickness of around 2.5 nm after the treatment, and this is confirmed by the results of Raman spectroscopy. A shift in the X-ray photoelectron spectroscopy (XPS) peaks indicates that the structural surface disorders are incorporated in the crystalline structure. The H-WS2 based LIBs and SIBs possess significantly higher specific capacities at different current densities. In addition, electrochemical impedance spectroscopy (EIS) reveals a drastic decrease in the charge-transfer resistance for both the LIBs and SIBs, which implies that the plasma hydrogenated electrode is more favorable for electron transportation during the electrochemical process. The improved rate performance of H-WS2 when applied to both LIBs and SIBs can be attributed to the reduced charge-transfer resistivity at the disordered surface layer and the improved electronic conductivity due to the disordered surface in the crystalline structure.

https://doi.org/10.1039/C8SE00566D