Template‐Free Synthesis of SnO 2 Hollow Nanostructures with High Lithium Storage Capacity

A facile one-step template-free method based on a novel inside-out Ostwald ripening mechanism is developed for inexpensive mass preparation of hollow and hollow core/shell-type SnO2 nanostructures using potassium stannate as the precursor. As-prepared SnO2 hollow nanospheres (see figure) exhibit ultrahigh lithium storage capacity and improved cycle performance as high-energy anode materials in lithium-ion secondary batteries. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2089/2006/c0733_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any…