Monoclinic beta-MoO3 nanosheets produced by atmospheric microplasma: application to lithium-ion batteries
Date
2008Author
Mariotti, Davide
Lindstrom, Henrik
Bose, Arumugam
Ostrikov, Kostya
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Porous high surface area thin films of nanosheet-shaped monoclinic MoO3 were deposited onto
platinized Si substrates using patch antenna-based atmospheric microplasma processing. The
films were characterized by high resolution transmission electron microscopy (HRTEM),
scanning electron microscopy (SEM) and electrochemical analysis. The electrochemical
analysis shows original redox peaks and high charge capacity, and also indicates a reversible
electrochemical behaviour particularly beneficial for applications in Li-ion batteries. SEM
shows that the films are highly porous and consist of nanosheets 50–100 nm thick with surface
dimensions in the micrometre range. HRTEM reveals that the MoO3 nanosheets consist of the
monoclinic beta phase of MoO3. These intricate nanoarchitectures made of monoclinic MoO3
nanosheets have not been studied previously in the context of applications in Li-ion batteries
and show superior structural and morphological features that enable effective insertion of Li
ions.
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