AI Article Synopsis
- Researchers created uniform hollow nanospheres of SnO(2) using a simple modified method, allowing control over the interior void space by adjusting reaction time.
- The process, based on the inside-out Ostwald ripening mechanism, can also be used to make rattle-type hollow structures, exemplified by alpha-Fe(2)O(3)@SnO(2).
- When tested for lithium storage, the rattle-type structures showed lower initial irreversible loss and higher capacity than the hollow spheres, highlighting the benefits of combining different materials for better performance.
Article Abstract
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.
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| http://dx.doi.org/10.1039/b9nr00102f | DOI Listing |
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