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Updated: Feb 12, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
Monodisperse CoSn2 and FeSn2 nanocrystals as high-performance anode materials for lithium-ion batteries
Shutao Wang1, Meng He, Marc Walter
1ETH Zürich, Department of Chemistry and Applied Biosciences, Vladimir Prelog Weg 1, 8093 Zürich, Switzerland.
Abstract:
Nanostructured metal alloys show great promise as replacement materials for graphite anodes, and could improve the energy and power density of present-day lithium-ion batteries (LIBs). Herein, we report a facile colloidal synthesis of CoSn2 and FeSn2 nanocrystals (NCs) via the reaction of Co or Fe NCs and SnCl2 in oleylamine under reducing conditions. Among our pure Sn NCs and mixtures of Co or Fe and Sn NCs, monodisperse CoSn2 nanoalloys showed considerably improved cycling stability. In particular, CoSn2 delivered a stable average capacity of 650 mA h g-1 for 5000 cycles at a high current density of 1984 mA g-1, which is among the highest reported cycling stabilities for Sn-based anode materials.
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