X-Ray Characterization of Short Pulse Laser Illuminated Hydrogen Storae Alloys Having Very High Performance
X-Ray Characterization of Short Pulse Laser Illuminated Hydrogen Storae Alloys Having Very High Performance
复制标题
短脉冲激光照射的高性能储氢合金的 X 射线表征
DOI：
10.1117/12.2186898
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Akihiko Nishimura Hirohisa Uchida and Takeshi Ohshima
中科院分区：
文献类型：
--
作者：
Hiroyuki Daido;Hiroshi ABE;Takashi Shobu;Takuya Shimomura;Shinnosuke Tokuhira;Yusuke Takeyama;Takehiro Furuyama;Akihiko Nishimura Hirohisa Uchida and Takeshi Ohshima
贮氢合金在电能生产、舞台、汽车等领域中发挥着越来越重要的作用。在以往的研究中发现，由带电粒子束在吸氢合金中引入的空位对提高初始吸氢反应速率有积极的作用。吸放氢初期反应速率是合金有待提高的重要性能之一。在这里，我们报告的表征的氢吸收反应速率直接照射的飞秒和纳秒激光器，而不是粒子束机器。激光依次照射几厘米见方的LaNi 4.6Al 0.4合金尖端的整个表面，导致吸氢反应速率的显著提高。为了表征表面层，我们使用SPring-8同步加速器机的单色化强X射线束进行X射线衍射实验。
Hydrogen storage alloys become more and more important in the fields of electric energy production and stage and automobiles such as Ni-MH batteries. The vacancies introduced in hydrogen absorption alloy by charged particle beams were found to be positive effect on the increase in the initial hydrogen absorption reaction rate in the previous study. The initial reaction rates of hydrogen absorption and desorption of the alloy are one of the important performances to be improved. Here, we report on the characterization of the hydrogen absorption reaction rate directly illuminated by a femtosecond and nanosecond lasers instead of particle beam machines. A laser illuminates the whole surface sequentially on a tip of a few cm square LaNi4.6Al0.4alloy resulting in significant improvement in the hydrogen absorption reaction rate. For characterization of the surface layer, we perform an x-ray diffraction experiment using a monochromatized intense x-ray beam from SPring-8 synchrotoron machine.