Feasibility and performance of the mixture of MgH2 and LiNH2 (1:1) as a hydrogen-storage material

被引:24
作者
Hu, J. J. [1 ]
Roehm, E. [1 ]
Fichtner, M. [1 ]
机构
[1] KIT, Inst Nanotechnol, D-76021 Karlsruhe, Germany
关键词
Hydrogen storage; Thermodynamics; Metal amides; Hydrogen desorption; N-H SYSTEM; MG(NH2)(2)-MGH2; NITRIDES;
D O I
10.1016/j.actamat.2011.05.059
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A 1:1 molar ratio mixture of MgH2 and LiNH2 was predicted to release 8.1 wt.% H under moderate conditions. This binary mixture of MgH2-LiNH2 was found to be a multinary complex system induced by mechanical ball milling, due to the metathesis reaction between the initial components. It was found that dehydrogenation from this system was initialized by the formation of LiH and Mg(NH2)(2) via such metathesis. The hydrogen sorption performance studied in this work shows a strong influence of the ball-milling parameters which determine the subsequent dehydrogenation pathways. An adequate ball milling facilitates hydrogen release, whereas insufficient milling results in a sluggish hydrogen desorption and severe NH3 emission. A maximum amount of 7.3% was obtained with formation of the ternary nitride LiMgN; however, desorption temperatures of up to 600 degrees C had to be applied. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:5821 / 5831
页数:11
相关论文
共 22 条
[1]   First-principles determination of multicomponent hydride phase diagrams: application to the Li-Mg-N-H system [J].
Akbarzadeh, Alireza R. ;
Ozolins, Vidvuds ;
Wolverton, Christopher .
ADVANCED MATERIALS, 2007, 19 (20) :3233-+
[2]   Identification of destabilized metal hydrides for hydrogen storage using first principles calculations [J].
Alapati, SV ;
Johnson, JK ;
Sholl, DS .
JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (17) :8769-8776
[3]  
AYLWARD G, 1998, THERMODYNAMIC DATABA
[4]   Tunable Defect Structure in the Li-Mg-N Ternary Phase System: A Powder Neutron Diffraction Study [J].
Bailey, Andrew S. ;
Hubberstey, Peter ;
Hughes, Robert W. ;
Ritter, Clemens ;
Gregory, Duncan H. .
CHEMISTRY OF MATERIALS, 2010, 22 (10) :3174-3182
[5]   Interaction of hydrogen with metal nitrides and imides [J].
Chen, P ;
Xiong, ZT ;
Luo, JZ ;
Lin, JY ;
Tan, KL .
NATURE, 2002, 420 (6913) :302-304
[6]   Hydrogen storage properties of the Mg-Ti-H system prepared by high-energy-high-p res sure reactive milling [J].
Choi, Young Joon ;
Lu, Jun ;
Sohn, Hong Yong ;
Fang, Zhigang Zak .
JOURNAL OF POWER SOURCES, 2008, 180 (01) :491-497
[7]   Investigation on the Properties of the Mixture Consisting of Mg(NH2)2, LiH, and LiBH4 as a Hydrogen Storage Material [J].
Hu, Jianjiang ;
Fichtner, Maximilian ;
Chen, Ping .
CHEMISTRY OF MATERIALS, 2008, 20 (22) :7089-7094
[8]   Effects of ball-milling conditions on dehydrogenation of Mg(NH2)2-MgH2 [J].
Hu, Jianjiang ;
Xiong, Zhitao ;
Wu, Guotao ;
Chen, Ping ;
Murata, Kenji ;
Sakata, Ko .
JOURNAL OF POWER SOURCES, 2006, 159 (01) :120-125
[9]   Hydrogen release from Mg(NH2)2-MgH2 through mechanochemical reaction [J].
Hu, Jianjiang ;
Wu, Guotao ;
Liu, Yongfeng ;
Xiong, Zhitao ;
Chen, Ping ;
Murata, Kenji ;
Sakata, Ko ;
Wolf, Gerd .
JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (30) :14688-14692
[10]   METALLAMIDE UND METALLNITRIDE .25. ZUR KENNTNIS DES LITHIUMIMIDES [J].
JUZA, R ;
OPP, K .
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1951, 266 (06) :325-330