Journalartikel

Jahr der Veröffentlichung: 2017

Seiten: 2474-2483

Zeitschrift: Beilstein Journal of Nanotechnology

Bandnummer: 8

ISSN: 2190-4286

Open Access Status: Gold

DOI Link: https://doi.org/10.3762/bjnano.8.247

Verlag: Beilstein-Institut

Abstract: 
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 500mA/g, respectively.

Harvard-Zitierstil: Schmitz, A., Schütte, K., Ilievski, V., Barthel, J., Burk, L., Mülhaupt, R., et al. (2017) Synthesis of metal-fluoride nanoparticles supported on thermally reduced graphite oxide, Beilstein Journal of Nanotechnology, 8, pp. 2474-2483. https://doi.org/10.3762/bjnano.8.247

APA-Zitierstil: Schmitz, A., Schütte, K., Ilievski, V., Barthel, J., Burk, L., Mülhaupt, R., Yue, J., Smarsly, B., & Janiak, C. (2017). Synthesis of metal-fluoride nanoparticles supported on thermally reduced graphite oxide. Beilstein Journal of Nanotechnology. 8, 2474-2483. https://doi.org/10.3762/bjnano.8.247