Article pubs.acs.org/JPCC
FeOx‑Coated SnO2 as an Anode Material for Lithium Ion Batteries
Hany El-Shinawi,*,‡,⊥ Anne S. Schulze,§ Manuel Neumeier,‡ Thomas Leichtweiß,‡ and Jürgen Janek‡ ‡
Institute of Physical Chemistry, Justus-Liebig-University, Heinrich-Buff-Ring 58, 35392 Giessen, Hesse, Germany Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University, Heinrich-Buff-Ring 58, 35392 Giessen, Hesse, Germany
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S Supporting Information *
ABSTRACT: Nanostructured iron oxide is coated on commercial SnO2 nanoparticles via a simple solution route. The method involves the thermal decomposition of an iron carbonyl complex (Fe(CO)5) in the presence of SnO2 and a surfactant in an organic solvent. The resulting FeOx/SnO2 nanocomposite showed an enhanced performance as an anode material for lithium ion batteries. In a conventional electrolyte containing 5 wt % fluoroethylene carbonate (FEC), a composite FeOx/SnO2 (∼1:3 mol ratio) exhibited a stable capacity ∼480 mAh/g (at a rate of 400 mA/g) for up to 150 cycles compared with
