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Casting amorphorized SnO/MoO hybrid into foam-like carbon nanoflakes towards high-performance pseudocapacitive lithium storage.

08:00 EDT 2nd April 2019 | BioPortfolio

Summary of "Casting amorphorized SnO/MoO hybrid into foam-like carbon nanoflakes towards high-performance pseudocapacitive lithium storage."

We report an amorphorization-hybridization strategy to enhance lithium storage by casting atomically mixed amorphorized SnO/MoO into porous foam-like carbon nanoflakes (denote as SnO/MoO@CNFs, or SMC in short), which are simply prepared by annealing tin(II)/molybdenum(IV) 2-ethylhexanoate within CNFs under ambient atmosphere at a low temperature (300 °C). The SnO/MoO loading amount within CNFs can be easily adjusted by controlling the Sn/Mo/C precursors. When examined as lithium ion battery (LIB) anode materials, the amorphorized SnO/MoO@CNFs with carbon content of 32 wt% (also denote as SMC-32, in which the number represents the carbon content) deliver a high reversible capacity of 1120.5 mA h/g after 200 cycles at 200 mA/g and then 651.5 mA h/g after another 300 cycles at 2000 mA/g, which is much better than that of the crystalline SnO/CNFs (carbon content of 34 wt%), MoO/CNFs (carbon content of 22.7 wt%), or SnO/MoO@CNFs (with lower carbon contents of 11 and 25 wt%). The electrochemical measurements as well as the ex situ structure characterization clearly suggest that combination of amorphorization and hybridization of SnO/MoO with CNFs synergistically contributes to the superior lithium storage performance with high pseudocapacitive contribution.

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Journal Details

This article was published in the following journal.

Name: Journal of colloid and interface science
ISSN: 1095-7103
Pages: 299-308

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