Hydrogen storage of the Mg-C composites

被引：56

作者：

Rud, A. D. ^{[1
]}

Lakhnik, A. M. ^{[1
]}

Ivanchenko, V. G. ^{[1
]}

Uvarov, V. N. ^{[1
]}

Shkola, A. A. ^{[1
]}

Dekhtyarenko, V. A. ^{[1
]}

Ivaschuk, L. I. ^{[1
]}

Kuskova, N. I. ^{[2
]}

机构：

[1] GV Kurdyumov Inst Met Phys NASU, UA-03680 Kiev 142, Ukraine

[2] Inst Pulse Res & Engn NASU, UA-54018 Nikolayev, Ukraine

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 04期

关键词：

hydrogen adsorption/desorption; nanopowders; mechanical alloying; carbon nanomaterials; magnesium-carbon; nanocomposites;

D O I：

10.1016/j.ijhydene.2007.12.032

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 effect of different kinds of carbon on the hydrogen sorption kinetics by magnesium-carbon composites was analyzed. To prepare magnesium-based composites by ball milling, graphite and carbon nanomaterials (hereinafter CNM) obtained by the electroexplosion technique were used. Phase composition and structure state of the as-milled and hydrogenated magnesium-carbon and magnesium-nickel-carbon composites have been investigated. It was found the crystallite size in the Mg-CNM composite is smaller in comparison with the magnesium-graphite and magnesium-graphite-nickel mixtures. The CNM additives to magnesium essentially improve the hydrogen sorption kinetics. It results in a reduction of hydrogen sorption temperature. The noticeable hydrogen absorption took place already at a temperature of 363 K. The hydrogen capacity was about 5 wt% for magnesium ball milled with CNM additives. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：1310 / 1316

页数：7

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