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首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Analytical Electron Microscopy Studies of Lithium Aluminum Hydrides with Ti- and V-Based Additives
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Analytical Electron Microscopy Studies of Lithium Aluminum Hydrides with Ti- and V-Based Additives

机译：含Ti和V基添加剂的氢化铝锂的分析电子显微镜研究

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The microstructure of LiAlD_4 with TiCl_3centre dotl/3(AlCl_3) and VCl_3 additives has been studied during different steps of the decomposition process using electron energy loss spectroscopy and energy-dispersive X-ray spectroscopy in a scanning transmission electron microscope.Energy filtered transmission electron microscopy was used to show elemental distributions in the samples.The spatial distribution of the additives and the main elements within the alanate particles was examined with a resolution of a few nanometers.The analysis of the electron energy loss spectra reveals the chemical state of Al,O,and the additives.Ti and V do not appear to mix chemically with Al to a significant degree.V was found in high concentration in just a few particles,while Ti is more uniformly distributed.All the samples showed evidence of oxidation despite procedures being adopted to avoid exposing the material to air.The additives are oxidized in all the samples,and Al_2O_3 forms a thin layer at the surface of the particles.This paper gives a comparison between samples at different stages of the decomposition process using different additives.
机译：在扫描透射电子显微镜中使用电子能量损失光谱和能量色散X射线光谱法研究了在分解过程的不同步骤中含TiCl_3中心dotl / 3（AlCl_3）和VCl_3添加剂的LiAlD_4的微观结构。用电子显微镜观察样品中的元素分布，并以几纳米的分辨率检查了铝酸盐颗粒中添加剂和主要元素的空间分布。电子能量损失谱的分析揭示了Al，O的化学状态Ti和V似乎没有与Al发生化学混合。在几个颗粒中发现高浓度的V，而Ti分布更均匀。所有样品中的添加剂都会被氧化，而Al_2O_3会在所有样品中形成一个薄层。本文对使用不同添加剂的分解过程中不同阶段的样品进行了比较。

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