Preparation of SnO2/carbon composite hollow spheres and their lithium storage properties
Lou, David Xiong Wen
Lee, Jim Yang
Archer, Lynden A.
Date of Issue2008
School of Chemical and Biomedical Engineering
In this work, we present a novel concept of structural design for preparing functional composite hollow spheres and derived double-shelled hollow spheres. The approach involves two main steps: preparation of porous hollow spheres of one component and deposition of the other component onto both the interior and exterior surfaces of the shell as well as in the pores. We demonstrate the concept by preparing SnO2/carbon composite hollow spheres and evaluate them as potential anode materials for lithium-ion batteries. These SnO2/carbon hollow spheres are able to deliver a reversible Li storage capacity of 473 mA h g^−1 after 50 cycles. Unusual double-shelled carbon hollow spheres are obtained by selective removal of the sandwiched porous SnO2 shells.
Chemistry of materials
© 2008 American Chemical Society.