Critical Length for Lattice Expansion of SnO<sub>2</sub> Nanorods and Nanosheets: Implications for Lithium-Ion Batteries
Critical Length for Lattice Expansion of SnO<sub>2</sub> Nanorods and Nanosheets: Implications for Lithium-Ion Batteries
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SnO<sub>2</sub> 纳米棒和纳米片晶格膨胀的临界长度：对锂离子电池的影响
DOI：
10.1021/acsanm.1c02615
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发表时间：
2021
影响因子：
5.9
通讯作者：
Nishibori Eiji
中科院分区：
文献类型：
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作者：
Nakamura Ryunosuke;Kasai Hidetaka;Fujita Tomoki;Akamine Hiroshi;Hata Satoshi;Nishibori Eiji
采用同步辐射X射线粉末衍射技术，系统研究了四元SnO 2纳米棒和纳米片的晶格膨胀和表面应力。在实验不确定性范围内，纳米棒的晶格常数a和c与相同尺寸的纳米片的晶格常数a和c的粒度依赖性是相同的。这表明SnO 2纳米结构材料的晶格常数仅取决于平行于晶轴的颗粒尺寸。纳米棒和纳米片的平均原子体积线性地依赖于颗粒表面积A与体积VinA/V的比率<0.5nm-1。在A/V< 0.5 nm-1时，表面应力估计为−1.7（2）N/m，体相平均原子体积合理。纳米棒和纳米片在A/V> 0.5 nm-1时偏离线性线。膨胀行为的边界被发现是1.9 nm的颗粒尺寸。9 nm的临界长度对它们在锂离子电池中的应用研究有影响，因为尺寸从几个纳米到几十个纳米的SnO 2纳米结构材料已经被制备和研究用于锂离子电池的阳极。
Lattice expansion and surface stress for tetragonal SnO2nanorods and nanosheets were systematically investigated using lattice constants determined from in situ synchrotron radiation X-ray powder diffraction of hydrothermal synthesis. A particle size dependence of lattice constantsaandcfor the nanorods was identical to that for the nanosheets in the same size within experimental uncertainties. The fact suggests the lattice constants of SnO2nanostructured materials only depend on the particle size parallel to the crystallographic axis. The average atomic volume of the nanorods and nanosheets linearly depends on the ratio of the particle surface areaAto volumeVinA/V< 0.5 nm–1. The surface stress estimated inA/V< 0.5 nm–1was −1.7(2) N/m with a reasonable average atomic volume for bulk. Significant deviations from the linear line were observed inA/V> 0.5 nm–1for the nanorods and nanosheets. A boundary of expansion behavior was found to be the particle size of ∼9 nm. The critical length of 9 nm has an effect on the study of their application for Li-ion batteries since SnO2nanostructured materials with size from a few nanometers to tens of nanometers have been fabricated and investigated for anodes in lithium-ion batteries.
影响因子：
2.8
作者：
McBride, James R.;Dukes, Albert D., III;Schreuder, Michael A.;Rosenthal, Sandra J.
通讯作者：
Rosenthal, Sandra J.
用于 SPring-8 BL02B2 的原位同步辐射粉末衍射的水热反应器，用于纳米粒子的定量设计
DOI：
10.1016/j.supflu.2018.10.016
发表时间：
2019
期刊：
The Journal of Supercritical Fluids
影响因子：
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作者：
Fujita Tomoki;Kasai Hidetaka;Nishibori Eiji
通讯作者：
Nishibori Eiji