Formation and hydrogen storage properties of in situ prepared Mg-Cu alloy nanoparticles by arc discharge

被引：19

作者：

Lei, J. P. ^{[1
]}

Huang, H. ^{[1
]}

Dong, X. L. ^{[1
]}

Sun, J. P. ^{[1
]}

Lu, B. ^{[1
]}

Lei, M. K. ^{[1
]}

Wang, Q. ^{[1
]}

Dong, C. ^{[1
]}

Cao, G. Z. ^{[2
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116023, Liaoning, Peoples R China

[2] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 19期

基金：

中国国家自然科学基金;

关键词：

Mg-Cu nanoparticles; Intermetallic compounds; Arc discharge; Hydrogenation treatment; HYDRIDING COMBUSTION SYNTHESIS; CHEMICAL-VAPOR-DEPOSITION; NANOCRYSTALLINE MAGNESIUM; LAMINATE COMPOSITES; KINETICS; FILMS; DIFFUSION; SYSTEM; GROWTH;

D O I：

10.1016/j.ijhydene.2009.07.092

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：

Mg-Cu alloy nanoparticles were in situ prepared by a physical vapor condensation method (arc discharge) in a mixture of argon and hydrogen. Four crystalline phases, Mg, Mg2Cu, MgCu2 and MgO, were formed simultaneously during the arc-discharge evaporation. Detailed experiments revealed that nanostructured hydrogen-active phases of Mg2Cu and Mg exhibit enhanced hydrogen absorption kinetics possibly due to the small grain size and surface defects. The maximal hydrogen storage contents of Mg-Cu alloy nanoparticles can reach 2.05 +/- 0.10 wt% at 623 K. (c) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：8127 / 8134

页数：8

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