Amorphous Tin Oxide Nanohelix Structure Based Electrode for Highly Reversible Na-Ion Batteries

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An array of amorphous tin oxide (a-SnOx.) nanohelixes (NHs) was fabricated on copper foil as an electrode for Na-ion batteries via the oblique angle deposition method, a solution- and surfactant-free process. The combination of the amorphous phase SnOx with a low oxidation number and its vertically aligned NH geometry with a large surface area and high porosity, which facilitate Na-ion dynamics and accommodate the volume changes, enabled a reversible capacity of up to 915 mA h g(-1) after 50 cycles, fast rate capability with 48.1% retention at 2 A g(-1), and high stability, which are superior to those of crystalline nanoparticle-based electrodes.
Publisher
AMER CHEMICAL SOC
Issue Date
2019-06
Language
English
Article Type
Article
Citation

ACS NANO, v.13, no.6, pp.6513 - 6521

ISSN
1936-0851
DOI
10.1021/acsnano.8b09773
URI
http://hdl.handle.net/10203/263308
Appears in Collection
CBE-Journal Papers(저널논문)
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