Single Crystallization of Olivine Lithium Phosphate Nanowires using Oriented Attachments

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• 作者：Jun Kikkawa ; Eiji Hosono ; Masashi Okubo ; Koichi Kagesawa ; Haoshen Zhou ; Takuro Nagai ; Koji Kimoto
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：April 10, 2014
• 年：2014
• 卷：118
• 期：14
• 页码：7678-7682
• 全文大小：306K
• 年卷期：v.118,no.14(April 10, 2014)
• ISSN：1932-7455

文摘

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.