Preparation and hydrogen storage properties of Mg-Al-Li solid solution

被引：26

作者：

Lan, Zhiqiang ^{[1
,2
]}

Peng, Wenqi ^{[1
]}

Wei, Wenlou ^{[1
,2
]}

Xu, Liqin ^{[1
]}

Guo, Jin ^{[1
,2
]}

机构：

[1] Guangxi Univ, Guangxi Coll & Univ Key Lab Novel Energy Mat & Re, Coll Phys Sci & Technol, Nanning 530004, Peoples R China

[2] Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guangxi Collaborat Innovat Ctr Struct & Performan, Guilin 541004, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 14期

基金：

中国国家自然科学基金;

关键词：

Mg-Al-Li solid solution; Hydrogen storage capacity; Hydrogen absorption/desorption kinetics; ALLOYS; PHASE;

D O I：

10.1016/j.ijhydene.2015.10.150

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：

In this work, a Mg-Al-Li solid solution was prepared and the influence of the preparation process on its hydrogen storage properties was investigated. The Mg17Al12 (Li) solid solution was obtained by sintering, annealing at liquid nitrogen temperature and mechanical ball milling using a molar ratio of Mg:Al:LiH = 6.5:1.5:2.0. The maximum hydrogen storage capacity of the Mg17Al12 (Li) solid solution reached 3.7 wt.% at 300 degrees C in 80 min. The enthalpy of the solid solution hydride decomposition was 53 kJ mol(-1) H-2, much lower than that of bulk Mg hydride decomposition (75 kJ mori H2). The solid solution had higher hydrogen storage capacity and better hydrogen absorption kinetics than Mg17Al12 alloy. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：6134 / 6138

页数：5

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