One-pot formation of SnO2 hollow nanospheres and α-Fe2O3@SnO2 nanorattles with large void space and their lithium storage properties
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AbstractIn this work, uniform SnO2 hollow nanospheres with large void space have been synthesized by a modified facile method. The void space can be easily controlled by varying the reaction time. The formation of interior void space is based on an inside-out Ostwald ripening mechanism. More importantly, this facile one-pot process can be extended to fabricate rattle-type hollow structures using α-Fe2O3@SnO2 as an example. Furthermore, the electrochemical lithium storage properties have been investigated. It is found that α-Fe2O3@SnO 2 nanorattles manifest a much lower initial irreversible loss and higher reversible capacity compared to SnO2 hollow spheres. This interesting finding supports a general hypothesis that a synergistic effect between functional core and shell materials can lead to improved lithium storage capabilities. © The Royal Society of Chemistry 2009.
CitationChen JS, Li CM, Zhou WW, Yan QY, Archer LA, et al. (2009) One-pot formation of SnO2 hollow nanospheres and α-Fe2O3@SnO2 nanorattles with large void space and their lithium storage properties. Nanoscale 1: 280. Available: http://dx.doi.org/10.1039/b9nr00102f.
SponsorsWe are grateful to the Nanyang Technological University and to the KAUST-Cornell (KAUST-CU) Center for Energy and Sustainability for financial support.
PublisherRoyal Society of Chemistry (RSC)