Hydrogenation of C14 Laves phase alloy: CaLi2

被引：15

作者：

Liu, Xiangfeng ^{[1
]}

Asano, Kohta ^{[1
]}

Terashita, Naoyoshi ^{[2
]}

Akiba, Etsuo ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

[2] Japan Met & Chem Co Ltd, Yamagata 9991351, Japan

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 03期

关键词：

Hydrogen storage; Ca-Li alloys; C14-type Laves phase; Rietveld refinement; Pressure-composition isotherms; STORAGE PROPERTIES; CRYSTAL-STRUCTURES; ABSORPTION; MICROSTRUCTURE; EQUILIBRIUM; FORM;

D O I：

10.1016/j.ijhydene.2008.12.011

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 CaLi2 alloy which was prepared by the induction melting method has been successfully hydrogenated. The CaLi2 alloy synthesized had a hexagonal C14-type Laves phase structure and absorbed 6.8-7.1 mass% hydrogen under the temperature range from 273 K to 393 K. The hydrogenated CaLi2 which consisted of CaH2 and LiH hydride phases did not desorb hydrogen under 10 kPa-H-2 at the same temperatures. The hydrogen absorption kinetics measured under 3.1 MPa-H-2 at room temperature showed that the hydrogen content reached to 6 mass% in 10 s. No obvious hydrogen desorption from the hydrogenated CaLi2 was observed even after evacuation for 20 h at 623 K. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：1472 / 1475

页数：4

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