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Hydrogen storage on LaNi_(5-x)Sn_x. Experimental and phenomenological Model-based analysis

机译:LaNi_(5-x)Sn_x上的氢存储。基于实验和现象学模型的分析

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摘要

Three hydride-forming metals (LaNi5, LaNi4.73Sn0.27 and LaNi4.55Sn0.45) have been studied as solid phase hydrogen storage material in batch experiments using pure hydrogen and temperatures ranging from 300 K to 340 K. This process mainly involves: physisorption of hydrogen gas molecules; chemisorption and dissociation of hydrogen molecules; surface penetration of hydrogen atoms; hydride formation; and diffusion of hydrogen atoms through hydride-forming metal. In case the material is fully hydrided, hydride formation ceases and diffusion proceeds on the fully hydrided material.
机译:使用纯氢气在300 K至340 K的温度范围内进行分批实验,研究了三种形成氢化物的金属(LaNi5,LaNi4.73Sn0.27和LaNi4.55Sn0.45)作为固相储氢材料。该过程主要涉及:氢气分子的物理吸附;氢分子的化学吸附和解离;氢原子的表面渗透;氢化物形成氢原子通过形成氢化物的金属扩散。如果材料完全氢化,则氢化物的形成停止,并且扩散在完全氢化的材料上进行。

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