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Amorphous Mo₅O₁₄-Type/Carbon Nanocomposite with Enhanced Electrochemical Capability for Lithium-Ion Batteries

Hashem, Ahmed M.; Abdel-Ghany, Ashraf E.; El-Tawil, Rasha S.; Indris, Sylvio; Ehrenberg, Helmut; Mauger, Alain; Julien, Christian M.

Abstract (englisch):
An amorphous MomO3m−1/carbon nanocomposite (m ≈ 5) is fabricated from a citrate–gel precursor heated at moderate temperature (500 °C) in inert (argon) atmosphere. The as-prepared Mo5O14-type/C material is compared to α-MoO3 synthesized from the same precursor in air. The morphology and microstructure of the as-prepared samples are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman scattering (RS) spectroscopy. Thermal gravimetry and elemental analysis indicate the presence of 25.8 ± 0.2% of carbon in the composite. The SEM images show that Mo5O14 is immersed inside a honeycomb-like carbon matrix providing high surface area. The RS spectrum of Mo5O14/C demonstrates an oxygen deficiency in the molybdenum oxide and the presence of a partially graphitized carbon. Outstanding improvement in electrochemical performance is obtained for the Mo5O14 encapsulated by carbon in comparison with the carbon-free MoO3. View Full-Text

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Verlagsausgabe §
DOI: 10.5445/IR/1000105405
Veröffentlicht am 28.01.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Energiespeichersysteme (IAM-ESS)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2079-4991
KITopen-ID: 1000105405
HGF-Programm 37.01.12 (POF III, LK 01)
Intercalation
Erschienen in Nanomaterials
Band 10
Heft 1
Seiten Article No.8
Vorab online veröffentlicht am 18.12.2019
Schlagwörter lithium batteries; anode material; MomO3m−1 oxide; Mo₅O₁₄-type/C composite
Nachgewiesen in Web of Science
Scopus
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