One-pot formation of SnO2 hollow nanospheres and alpha-Fe2O3@SnO2 nanorattles with large void space and their lithium storage properties.
In this work, uniform SnO(2) 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 alpha-Fe(2)O(3)@SnO(2) as an example. Furthermore, the electrochemical lithium storage properties have been investigated. It is found that alpha-Fe(2)O(3)@SnO(2) nanorattles manifest a much lower initial irreversible loss and higher reversible capacity compared to SnO(2) 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.
Chen
Jun Song
JS
School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore, 637457, Singapore.
Li
Chang Ming
CM
Zhou
Wen Wen
WW
Yan
Qing Yu
QY
Archer
Lynden A
LA
Lou
Xiong Wen
XW