Lithium nitride as hydrogen storage material

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• 作者：Oriele Palumbo ; Annalisa Paolone ; Rosario Cantelli ; Danesh Ch ; ra
• 关键词：Hydrogen ; Lithium nitride ; Lithium amide
• 刊名：International Journal of Hydrogen Energy
• 出版年：2008
• 出版时间：June 2008
• 年：2008
• 卷：33
• 期：12
• 页码：3107-3110
• 全文大小：239 K

文摘

In this paper we report studies of the elastic modulus and energy dissipation in lithium amide (LiNH₂) during its high temperature decomposition into imide (Li₂NH), according to the reaction: 2LiNH₂→Li₂NH+NH₃. The dynamic modulus variations allow the time and temperature evolution of decomposition to be monitored. It is shown that the formation of different phases are detected also at extremely low concentrations. During the amide to imide transformation a considerable increase of the modulus is detected. We found that the reaction rates are remarkably faster than those usually reported. The anelastic spectrum of Li₃N presents a strong variation in the elastic modulus, corresponding to the conversion from the β to the phase.