Hydrogen storage properties of Ml(1-x)Ca(x)Ni(5) pseudobinary intermetallic compounds

被引：16

作者：

Wang, XH

Chen, CP

Wang, CS

Wang, QD

机构：

[1] Dept. of Mat. Sci. and Engineering, Zhejiang University, Hongzhou

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1996年 / 232卷 / 1-2期

关键词：

hydride; hydrogen storage properties; hydrogen storage alloy; intermetallic compound;

D O I：

10.1016/0925-8388(95)01915-4

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 hydrogen storage properties of the pseudobinary intermetallic compounds Ml(1-x)Ca(x)Ni(5) (where Ml is La-rich mischmetal and x varies from 0 to 0.9) were investigated over the temperature range of 25-80 degrees C, It was found in experiment that with increasing x in Ml(1-x)Ca(x)Ni(5) the incubation time for its first hydrogenation shortened, the first hydrogen absorption rate accelerated, the hysteresis lowered, and the dissociation pressure of the hydrides (25 degrees C) increased when x < 0.3 but decreased in the range of x = 0.3 to 0.9. Considering the effect of the geometrical and electric factors, we deduced an equation for the dissociation pressure as a function of Ca content x. The equation agrees well with the test results. Owing to the lower cost and favourable properties of Ml(0.8)Ca(0.2)Ni(5), a metal hydride container of 30 N m(3) hydrogen capacity was designed and built to supply hydrogen for the hydrogen-gasoline hybrid fuel for an automobile engine.

引用

页码：192 / 196

页数：5

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