Hydride alloys properties investigations for hydrogen sorption compressor

被引：68

作者：

Dehouche, Z ^{[1
]}

Grimard, N ^{[1
]}

Laurencelle, F ^{[1
]}

Goyette, J ^{[1
]}

Bose, TK ^{[1
]}

机构：

[1] Univ Quebec, Inst Rech Hydrogene, Trois Rivieres, PQ G9A 5H7, Canada

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 399卷 / 1-2期

关键词：

hydrogen storage materials; gas-solid reactions; heat capacity; heat conduction; thermal compression;

D O I：

10.1016/j.jallcom.2005.01.029

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：

The use of metal hydride technology in hydrogen compression applications requires thorough knowledge of important thermophysical and sorption properties of selected hydrogen absorbing alloys. Three intermetallics, LaNi4.8Sn0.2, LmNi(4.9)Sn(0.1) and MmNi(4.7)Al(0.3) were selected among various alloys of the AB(5) family for use in a thermal hydrogen compressor and allow us to reach an outlet pressure of 20 atm. In this context, pressure-composition isotherms (PCT) at various temperatures included in the thermal operation range of the compressor were measured for the three alloys. Differential scanning calorimetry was used to determined their specific heats and effective thermal conductivities. A LaNi4.8Sn0.2 sample was also cycled 1000 times to test for its long term stability, and no significant change in sorption properties was detected, except for a small decrease of 0.05% hydrogen weight in total capacity and a small hysteresis reduction. (c) 2005 Published by Elsevier B.V.

引用

页码：224 / 236

页数：13

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