The mixed lithium-magnesium imide Li2Mg(NH)2 a promising and reliable hydrogen storage material
The mixed lithium-magnesium imide Li2Mg(NH)2 a promising and reliable hydrogen storage material
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DOI：
10.1016/j.ijhydene.2018.06.168
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发表时间：
2018-08
影响因子：
7.2
通讯作者：
Z. Matysina;S. Zaginaichenko;D. Schur;T. Veziroglu;A. Veziroğlu;M. Gabdullin;A. Zolotarenko;A. Zolotarenko
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文献类型：
--
作者：
Z. Matysina;S. Zaginaichenko;D. Schur;T. Veziroglu;A. Veziroğlu;M. Gabdullin;A. Zolotarenko;A. Zolotarenko
发展了Li2 Mg(NH)2结构相变的统计理论，它的形成伴随着游离氢的释放。计算了酰亚胺三相α，β，γ的标准吉布斯自由能生成。发现了它们对组成、温度、压力和能量的依赖关系。绘制了不同温度下各相的自由能浓度关系图，并据此建立了酰亚胺的状态图。研究了等温线、等压线和等温线。指出了α和β相存在磁滞效应的可能性。计算结果与实验数据进行了比较。
A statistical theory of the structural phase transformations of the imide Li2Mg(NH)2has been developed, the formation of which is accompanied by the release of free hydrogen. The standard Gibbs free energy formation of the imide's three phases: α, β, γ are calculated. Their dependencies on composition, temperature, pressure, and energy are found. Plots of concentration dependences of the free energy values of these phases are constructed for different temperatures, according to which the imide state diagram is established. Isotherms, isobars and isoplets are investigated. The possibility of hysteresis effect for α and β phases is shown. The results of the calculations are compared with the experimental data.