44 citations · 293 across the 16 of their papers we have counts for
16 papers
Separating cationic and anionic redox activity in antiperovskite LiFe)SO
Lennart Singer, Bowen Dong, M. A. A. Mohamed +4
Lithium-rich antiperovskite promise to be a compelling high-capacity cathode material due to existence of both cationic and anionic redox activity. Little is however known about th…
Challenges in the crystal growth of Li2FeSiO4
Waldemar Hergett, Christoph Neef, Hans-Peter Meyer +1
The high-pressure optical floating-zone method enables single crystal growth of the Pmnb high-temperature phase of Li2FeSiO4. The influence of growth conditions on crystal quality,…
MoO2/C composites prepared by tartaric acid and glucose-assisted sol-gel processes as anode materials for Lithium-ion batteries
G. S. Zakharova, L. Singer, Z. A. Fattakhova +5
MoO2/C-composites have been fabricated for the first time by a tartaric acid/glucose-assisted sol-gel method with post-annealing at 500 °C for 1 h in N2 flow. The synthesized mater…
Sol-gel synthesis of Li3VO4/C composites as anode materials for lithium-ion batteries
E. Thauer, G. S. Zakharova, S. A. Wegener +2
Li3VO4/C composites have been synthesized by a sol-gel method and post-annealing at 650 °C for 1 h in N2 flow using either tartaric acid, malic acid, or glucose as both chelating a…
Synthetically Encapsulated \& Self-Organized Transition Metal Oxide Nano Structures inside Carbon Nanotubes as Robust Li-ion Battery Anode Materials
Aakanksha Kapoor, Apurva L. Patrike, Nitesh Singh +5
We report a comprehensive study on the electrochemical performance of four different Transition Metal Oxides encapsulated inside carbon nanotubes (CNT). Irrespective of the type of…
Structural and physical properties of trilayer nickelates NiO ( La, Pr and Nd)
Dibyata Rout, Sanchayeta Ranajit Mudi, Marco Hoffmann +3
We investigate the low temperature structural and physical properties of the trilayer nickelates R4Ni3O10 (R = La, Pr and Nd) using resistivity, thermopower, thermal conductivity,…
Antisite disorder in the battery material LiFePO
J. Werner, C. Neef, C. Koo +3
We report detailed magnetometry and high-frequency electron spin resonance (HF-ESR) measurements which allow detailed investigation on Li-Fe antisite disorder in single-crystalline…
Filled Carbon Nanotubes as Anode Materials for Lithium-Ion Batteries
Elisa Thauer, Alexander Ottmann, Philip Schneider +18
Downsizing well-established materials to the nanoscale is a key route to novel functionalities, in particular if different functionalities are merged in hybrid nanomaterials. Hybri…
High-pressure optical floating-zone growth of Li(Mn,Fe)PO single crystals
Christoph Neef, Hubert Wadepohl, Hans-Peter Meyer +1
Mm-sized LiMnFePO single crystals with were grown by means of the traveling floating-zone technique at elevated Argon pressure of 30~bar. For the v…
A facile synthesis method and electrochemical studies of hierarchical structured MoS2/C-nanocomposite
Zhenyou Li, Alexander Ottmann, Elisa Thauer +9
A uniformly coated MoS2/Carbon-nanocomposite with three-dimensional hierarchical architecture based on carbonized bacterial cellulose (CBC) nanofibers is synthesized by a facile on…
Preparation of hierarchical C@MoS2@C sandwiched hollow spheres for Lithium ion batteries
Zhenyou Li, Alexander Ottmann, Ting Zhang +5
Hierarchical C@MoS2@C hollow spheres with the active MoS2 nanosheets being sandwiched by carbon layers have been produced by means of a modified template method. The process applie…
Hollow carbon sphere/metal oxide nanocomposite anodes for lithium-ion batteries
K. Wenelska, A. Ottmann, P. Schneider +3
Hollow carbon spheres (HCS) covered with metal oxide nanoparticles (SnO2 and MnO2, respectively) were successfully synthesized and investigated regarding their potential as anode m…
Tunable Magnetic Properties of Carbon-shielded NiPt Nanoalloys
Ahmed A. El-Gendy, Silke Hampel, Bernd Büchner +1
Spherical NiPt@C nanoalloys encapsulated in carbon shells are synthesized by means of high-pressure chemical vapour deposition. Upon variation of the synthesis parameters, both the…
Microwave-assisted hydrothermal synthesis of NH4V3O8 microcrystals with controllable morphology
G. S. Zakharova, A. Ottmann, B. Ehrstein +1
Water-free NH4V3O8 microcrystals have been successfully synthesized by a microwave-assisted hydrothermal method. The products were characterized by means of X-ray diffraction, scan…
Morphology and agglomeration control of LiMnPO micro- and nanocrystals
Christoph Neef, Carsten Jähne, Hans-Peter Meyer +1
Microwave-assisted hydrothermal synthesis was used to grow LiMnPO micro- and nanocrystals from acetate precursors. By appropriate adjustment of the precursor concentration and…
Growth, characterization, and magnetic properties of a Li(Mn,Ni)PO4 single crystal
Kunpeng Wang, Andrey Maljuk, Christian G. F. Blum +7
Ni-doped LiMn0.95Ni0.05PO4 single crystals have been grown for the first time by the travelling-solvent floating-zone method at low Argon pressure. The grown sample exhibits large…