Microstructure and hydrogen storage properties of porous Ni@Mg

被引：7

作者：

Choi, Y. J. ^{[1
]}

Liu, Z. Y. ^{[1
]}

Gao, H. N. ^{[1
]}

Zhao, Z. Y. ^{[1
]}

Wang, N. ^{[2
]}

Hou, D. L. ^{[3
]}

机构：

[1] Hebei Normal Univ, Sch Chem & Mat Sci, Hebei Shijiazhuang 050016, Peoples R China

[2] Hebei Normal Univ, Expt Ctr, Hebei Shijiazhuang 050016, Peoples R China

[3] Hebei Normal Univ, Sch Phys Sci & Informat Engn, Hebei Shijiazhuang 050016, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2011年 / 36卷 / 22期

基金：

中国国家自然科学基金;

关键词：

Hydrogen storage; Ni@Mg; Surface modification; Reduction reaction; ALLOYS; ABSORPTION; NANOWIRES; SORPTION; TIO2;

D O I：

10.1016/j.ijhydene.2011.08.024

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：

A nanoporous Ni layer on the surface of Mg was prepared utilizing the reduction reaction of Ni(2+) by Mg in NiCl(2)center dot 12H(2)O solution. XRD result showed that the product was composed of cubic Ni, hexagonal Mg and little Mg(OH)(2). SEM and TEM results suggested that a nanoporous Ni layer microencapsulated Mg and formed Ni@Mg. The specific surface area of Ni@Mg formed in this reaction was 65.3 m(2)/g. Hydrogen uptake increased as the temperature increased. Moreover, Ni@Mg showed a reversible hydriding-dehydriding process without formation of the stable hydrides, which indicated that the nanoporous Ni layer on the surface of Mg showed an obvious physisorption characteristics rather than hydrogen storage behavior of Mg. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：14484 / 14487

页数：4

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