Desorption Kinetics of Hydrogen in Mg2NiH4 Hydride and in Hydrogeneated Eutectic (Mg/Mg2Ni)Hx

被引：1

作者：

Cermak, Jiri ^{[1
]}

Kral, Lubomir ^{[1
]}

机构：

[1] Acad Sci Czech Republ VVI, Inst Phys Mat, CZ-61662 Brno, Czech Republic

来源：

DIFFUSION IN SOLIDS AND LIQUIDS IV | 2009年 / 283-286卷

关键词：

Intermetallic Compounds; Magnesium Alloys Hydrogen Diffusion; Hydrogen-storage Materials; LOW-TEMPERATURE PHASE; DEHYDRIDING KINETICS; STORAGE PROPERTIES; METAL-HYDRIDES; ABSORPTION; DIFFUSION; SYSTEM; ALLOYS; MG; TRANSFORMATIONS;

D O I：

10.4028/www.scientific.net/DDF.283-286.639

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Mg-Ni alloys are perspective hydrogen-storage materials. In the present work, kinetics of hydrogen desorption was studied in Mg(2)NiH(4) hydride and in hydrogenated eutectic (Mg/Mg(2)Ni)H(x). Time dependence of desorbed hydrogen was measured in temperature interval 552 -723 K and hydrogen diffusion coefficients were evaluated from obtained desorption curves. Results were interpreted in relation to phase composition investigated parallel by XRD. It was found that microtwinned low-temperature phase LT2 slows-down considerably the hydrogen desorption rate.

引用

页码：639 / 648

页数：10