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arXiv 1102.0849cond-mat.mtrl-sci
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多孔材料储氢的DFT展望

DFT Perspective of Hydrogen Storage on Porous Materials

N. S. Venkataramanan, Y. Kawazoe

摘要:

在本章中,氢分子在多孔材料中的物理吸附作为可能的储氢系统进行了审查。由于H2分子与吸附剂之间的弱相互作用,通常仅在低温下达到高储存容量。具有不同结构和组成的不同类别的多孔材料已经被设计用于储氢应用,使用计算方法,特别是借助于DFT方法。轻碱金属和碱土金属的掺杂提高了氢在不同多孔材料中的吸附能。从头算分子动力学已进行了解新功能化材料的稳定性。已经采用GCMC方法来知道新官能化材料的重量和体积吸收百分比。因此,组合的方法提供了更好的理解和设计新材料,以在接近室温下操作的可逆储氢应用。

英文摘要:

In this chapter, the physisorption of hydrogen molecules in porous materials as possible hydrogen storage systems has been reviewed. Owing to the weak interaction between H2 molecules and the adsorbent, high storage capacities are typically reached only at cryogenic temperature. Different classes of porous materials possessing different structure and composition have been designed for hydrogen storage applications using computational methods and especially with the aid of DFT methods. The adsorption energies for hydrogen in different porous materials have been increases by the doping of light weight alkali and alkali earth metals. Ab initio molecular dynamics has been carried out to know the stability of the newly functionalized materials. GCMC methods have been employed to know the gravimetric and volumetric uptake percentage of the newly functionalized materials. Therefore, the combined approach provides a better understanding and designing new materials to operate at near room temperature for the reversible hydrogen storage application.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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