Assessment of changes in desorption mechanism of MgH2 after ion bombardment induced destabilization

被引：22

作者：

Matovic, Ljiljana ^{[1
]}

Kurko, Sandra ^{[1
]}

Raskovic-Lovre, Zeljka ^{[1
]}

Vujasin, Radojka ^{[1
]}

Milanovic, Igor ^{[1
]}

Milosevic, Sanja ^{[1
]}

Novakovic, Jasmina Grbovic ^{[1
]}

机构：

[1] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade 11000, Serbia

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 08期

关键词：

Hydrogen storage; MgH2; Irradiation; Kinetics models; HYDROGEN STORAGE PROPERTIES; MAGNESIUM HYDRIDE; PHASE-CHANGE; KINETICS; SORPTION; IRRADIATION; ABSORPTION; DIFFUSION; METALS; POWDER;

D O I：

10.1016/j.ijhydene.2012.01.084

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：

This paper deals with non-isothermal kinetics models of hydrogen desorption from MgH2 altered by ion bombardment and stresses the importance of the MgH2 surface during its decomposition. In the case of argon-irradiated samples, where defects are induced in the near-surface region, the Avrami Erofeev mechanism with parameter n = 2 can be adopted while in the case of boron-irradiated samples, where defects are created deeper in the bulk, the desorption mechanism is the same with n = 3. The difference is possibly related to the concentration and good dispersion of defects in near-surface region in the samples. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：6727 / 6732

页数：6

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