期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 20, 期 37, 页码 8045-8049出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0jm00738b
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This paper reports the fabrication of a new, double-rough chestnut-like Sn@C composite in the form of mesospheres with nanohairs directly on a copper surface by a simple and scalable procedure. The hierarchical order in the nanostructure and the composition of the nanocomposite impart at least two functional properties: the lotus effect and reversible storage of lithium ions. The nanohairs of carbon nanotube-encapsulated metallic tin; and the underlying core of carbon-tin mesospheres with rough exterior; give rise to nanoscale and mesoscale roughness not unlike the double-rough surface of a lotus leave (nanohairs on microbumps). Subsequently the modified copper surface is superhydrophobic just like the lotus leaves. On the other hand the ability to directly deposit lithium-active storage compounds (Sn, C) on a current conductor (Cu) has also resulted in an electrode immediately usable as a lithium ion battery anode without additional processing. Indeed electrochemical measurements have shown quite satisfying properties for lithium ion battery applications.
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