In Situ Transmission Electron Microscopy Observation of Microstructure and Phase Evolution in a SnO2Nanowire during Lithium Intercalation
| Autor: | Ji-Guang Zhang, Donald R. Baer, Daiwon Choi, Bruce W. Arey, Jun Liu, Zhenguo Yang, Suntharampillai Thevuthasan, Chong M. Wang, Wu Xu, Laxmikant V. Saraf, Jie Xiao |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Mechanical Engineering Nanowire Bioengineering Nanotechnology General Chemistry Electrolyte Condensed Matter Physics Microstructure Nanowire battery Anode law.invention Electron diffraction Transmission electron microscopy law Phase (matter) General Materials Science Composite material |
| Zdroj: | Nano Letters. 11:1874-1880 |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | Recently we have reported structural transformation features of SnO2 upon initial charging using a configuration that leads to the sequential lithiation of SnO2 nanowire from one end to the other (Huang et al. Science2010, 330, 1515). A key question to be addressed is the lithiation behavior of the nanowire when it is fully soaked into the electrolyte (Chiang Science2010, 330, 1485). This Letter documents the structural characteristics of SnO2 upon initial charging based on a battery assembled with a single nanowire anode, which is fully soaked (immersed) into an ionic liquid based electrolyte using in situ transmission electron microscopy. It has been observed that following the initial charging the nanowire retained a wire shape, although highly distorted. The originally straight wire is characterized by a zigzag structure following the phase transformation, indicating that during the phase transformation of SnO2 + Li ↔ LixSn + LiyO, the nanowire was subjected to severe deformation, as similarly observe... |
| Databáze: | OpenAIRE |
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