Single Crystallization of Olivine Lithium Phosphate Nanowires using Oriented Attachments

Electrospinning enables fabrication of nanowires (NWs) of various materials from a polymer solution. Nevertheless, few reports have described single crystallization of oxide and polyanion NWs. Its mechanism remains unknown. This report presents transmission electron microscopy observations of conver...

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Bibliographic Details
Published in:Journal of physical chemistry. C 2014-04, Vol.118 (14), p.7678-7682
Main Authors: Kikkawa, Jun, Hosono, Eiji, Okubo, Masashi, Kagesawa, Koichi, Zhou, Haoshen, Nagai, Takuro, Kimoto, Koji
Format: Article
Language:English
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Summary:Electrospinning enables fabrication of nanowires (NWs) of various materials from a polymer solution. Nevertheless, few reports have described single crystallization of oxide and polyanion NWs. Its mechanism remains unknown. This report presents transmission electron microscopy observations of conversion from electrospun amorphous NWs to single-crystalline olivine lithium phosphate NWs. After nucleation and grain growth, single crystallization is achieved by the attachment of adjacent crystal grains with common crystallographic orientations in an amorphous phase confined to self-forming carbon shells. The present NW axes have no specific orientation. These results imply that self-forming shells play a key role in achieving single-crystalline NWs in electrospinning.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp500227s