Monday, December 02, 2013

A nano-Si/FeSi2Ti hetero-structure with structural stability for highly reversible lithium storage




Nanoscale , 2014, Advance Article

DOI: 10.1039/C3NR04954J, Paper

Mi Ru Jo, Yoon-Uk Heo, Yoon Cheol Lee, Yong-Mook Kang

A nano-Si/FeSi2 Ti hetero-structure has been synthesized for highly reversible Li-ion batteries by using a simple melt-spinning method. This composite has a very peculiar core/shell structure in which the FeSi2 Ti alloy acts as a mechanically supporting backbone and as an electronic pathway for the active Si attached to its surface, making electrochemical reactions follow relatively small volume expansion routes.

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