TY  - JOUR
AU  - Schmitz, Alexa
AU  - Schütte, Kai
AU  - Ilievski, Vesko
AU  - Barthel, Juri
AU  - Burk, Laura
AU  - Mülhaupt, Rolf
AU  - Yue, Junpei
AU  - Smarsly, Bernd
AU  - Janiak, Christoph
TI  - Synthesis of metal-fluoride nanoparticles supported on thermally reduced graphite oxide
JO  - Beilstein journal of nanotechnology
VL  - 8
SN  - 2190-4286
CY  - Frankfurt, M.
PB  - Beilstein-Institut zur Förderung der Chemischen Wissenschaften
M1  - FZJ-2017-07744
SP  - 2474 - 2483
PY  - 2017
AB  - Metal-fluoride nanoparticles, (MFx-NPs) with M = Fe, Co, Pr, Eu, supported on different types of thermally reduced graphite oxide (TRGO) were obtained by microwave-assisted thermal decomposition of transition-metal amidinates, (M{MeC[N(iPr)]2}n) or [M(AMD)n] with M = Fe(II), Co(II), Pr(III), and tris(2,2,6,6-tetramethyl-3,5-heptanedionato)europium, Eu(dpm)3, in the presence of TRGO in the ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIm][BF4]). The crystalline phases of the metal fluorides synthesized in [BMIm][BF4] were identified by powder X-ray diffraction (PXRD) to be MF2 for M = Fe, Co and MF3 for M = Eu, Pr. The diameters and size distributions of MFx@TRGO were from (6 ± 2) to (102 ± 41) nm. Energy-dispersive X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS) were used for further characterization of the MFx-NPs. Electrochemical investigations of the FeF2-NPs@TRGO as cathode material for lithium-ion batteries were evaluated by galvanostatic charge/discharge profiles. The results indicate that the FeF2-NPs@TRGO as cathode material can present a specific capacity of 500 mAh/g at a current density of 50 mA/g, including a significant interfacial charge storage contribution. The obtained nanomaterials show a good rate capacity as well (220 mAh/g and 130 mAh/g) at a current density of 200 and 500 mA/g, respectively.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000416166400002
DO  - DOI:10.3762/bjnano.8.247
UR  - https://juser.fz-juelich.de/record/840189
ER  -