Thermodynamics of Hydrogen Desorption from NaMgH3 and Its Application As a Solar Heat Storage Medium

被引：78

作者：

Sheppard, Drew A. ^{[1
]}

Paskevicius, Mark ^{[1
]}

Buckley, Craig E. ^{[1
]}

机构：

[1] Curtin Univ Technol, Hydrogen Storage Res Grp, Fuels & Energy Technol Inst, Dept Imaging & Appl Phys, Perth, WA 6845, Australia

来源：

CHEMISTRY OF MATERIALS | 2011年 / 23卷 / 19期

基金：

澳大利亚研究理事会;

关键词：

NaMgH3; hydrogen storage; thermodynamics; enthalpy; entropy; kinetics; solar heat storage; PEROVSKITE-TYPE HYDRIDE; SYSTEM; NA; MG; STABILITY; LI;

D O I：

10.1021/cm202056s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

NaMgH3 has been considered as a potential hydrogen storage material and is an intermediary phase in a number of complex-hydride destabilization reactions. Using careful pressure-composition-isotherm measurements, the hydrogen equilibrium plateau was shown to be flat with negligible hysteresis. The enthalpy of desorption, H, was found to be 86.6 ± 1.0 kJ/(mol H2) and the entropy, S, to be 132.2 ± 1.3 J/(mol H2 K), values lower than previously reported. The high enthalpy, flat plateau, and lack of hysteresis make NaMgH3 a potential candidate as a solar heat storage medium. © 2011 American Chemical Society.

引用

页码：4298 / 4300

页数：3

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