| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Splitting Process of Na-Birnessite Nanosheet via Transmission Electron Microscopy |
| LI Lin, MA Chao, YANG Huai-Xin, LI Jian-Qi** |
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190
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| Cite this article: |
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LI Lin, MA Chao, YANG Huai-Xin et al 2013 Chin. Phys. Lett. 30 088103 |
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Abstract The intermediate phase of hydrothermal synthesis of the Na0.44MnO2 (NMO) nanowires is systematically investigated by means of transmission electron microscopy (TEM). The coexistence of Na-birnessite and NMO is commonly observed in the nanosheets. The NMO nanobelts in general have the width of ～15 nm embedded in the (001) oriented Na-birnessite nanosheet. It is also found that the nanosheets of this intermediate phase often split along the NMO and Na-birnessite interface. Our structural study also shows that the NMO nanobelts prefer to grow along the [001] direction and gives rise to the [001] elongated NMO nanowires. Based on our TEM observations, the visible lattice mismatch and the resultant strain at the NMO/Na-birnessite interface play a critical role for formation of notable splitting structures in this kind of nanomaterial. The mechanism for the formation of the [001] NMO nanobelt is briefly discussed.
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Received: 27 June 2013
Published: 21 November 2013
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| PACS: |
81.07.Gf
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(Nanowires)
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61.46.Km
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(Structure of nanowires and nanorods (long, free or loosely attached, quantum wires and quantum rods, but not gate-isolated embedded quantum wires))
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68.37.Lp
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(Transmission electron microscopy (TEM))
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88.80.ff
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(Batteries)
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82.47.Aa
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(Lithium-ion batteries)
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