Dehydriding reaction of AlH3: in situ microscopic observations combined with thermal and surface analyses
Dehydriding reaction of AlH3: in situ microscopic observations combined with thermal and surface analyses
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DOI：
10.1088/0957-4484/20/20/204004
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发表时间：
2009-05-20
期刊：
影响因子：
3.5
通讯作者：
Orimo, S.
中科院分区：
文献类型：
--
作者：
Ikeda, K.;Muto, S.;Orimo, S.
采用原位显微观察、热分析和表面分析相结合的方法研究了单相α-AlH 3的放氢反应。在脱氢反应之前，认为尺寸为100 nm-1 μ m的初级AlH 3颗粒被厚度小于5 nm的氧化物层覆盖。在颗粒内部清楚地观察到尺寸为1-50 nm的金属Al的沉淀/晶粒生长和“边界空间”的增加，而被层覆盖的颗粒的形貌在脱氢反应期间没有改变。该初步报告为进一步研究AlH 3作为一种可能的储氢材料提供了基础信息。
The dehydriding reaction of single-phase alpha-AlH3 was investigated by in situ microscopic observations combined with thermal and surface analyses. Before the dehydriding reaction, primary AlH3 particles of size 100 nm-1 mu m were thought to be covered by an oxide layer with a thickness of less than 5 nm. Both the precipitation/grain-growth of metallic Al of size 1-50 nm and an increase in 'boundary space' were clearly observed inside the particles, while the morphologies of the particles covered by the layer did not change during the dehydriding reaction. This preliminary report provides fundamental information for a further study of AlH3 as a possible hydrogen storage material.