...
首页> 外文期刊>Physica, B. Condensed Matter >Hydrogen desorption energies of Aluminum hydride (Al_nH _(3n)) clusters
【24h】

Hydrogen desorption energies of Aluminum hydride (Al_nH _(3n)) clusters

机译:氢化铝(Al_nH _(3n))团簇的氢解吸能

获取原文
获取原文并翻译 | 示例
           

摘要

Hydrogen desorption energies are considered an important factor in the selection of hydrogen storage materials. Among metal hydrides, aluminum hydride seems to be a promising material for hydrogen storage. We report the theoretical calculations of the hydrogen desorption energies of Al_nH _(3n) (n = 1, 2, 3...) clusters based on Density Functional Theory (DFT). Except for very small clusters, desorption energy is seen to steadily decrease with cluster size n and reach a value of 0.19 eV per H~2 for n=20, showing that for large cluster sizes approximating bulk behavior, aluminum hydride tends to be unstable. But Al_nH_(3n) clusters of sizes n=8-16 have desorption energies in the range 0.6-0.4 eV per H_2, which is suitable for hydrogen storage application.
机译:氢解吸能量被认为是选择储氢材料的重要因素。在金属氢化物中,氢化铝似乎是一种有前途的储氢材料。我们报告了基于密度泛函理论(DFT)的Al_nH _(3n)(n = 1,2,3 ...)团簇的氢解吸能的理论计算。除非常小的团簇外,随着团簇尺寸n的增加,解吸能量逐渐降低,当n = 20时,解吸能达到每H〜2 0.19 eV的值,这表明对于接近整体行为的大团簇,氢化铝趋于不稳定。但是尺寸为n = 8-16的Al_nH_(3n)团簇的解吸能在每H_2 0.6-0.4 eV的范围内,适用于储氢应用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号