Solid solubility of Mg in Ca2Ni7 and hydrogen storage properties of (Ca2-xMgx)Ni7 alloys

被引：24

作者：

Si, T. Z. ^{[1
,2
]}

Pang, G. ^{[1
]}

Zhang, Q. A. ^{[1
]}

Liu, D. M. ^{[1
]}

Liu, N. ^{[2
]}

机构：

[1] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Anhui, Peoples R China

[2] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Ca-Mg-Ni alloy; Structure; Hydrogen storage; ELECTROCHEMICAL PROPERTIES; STRUCTURAL-PROPERTIES; MICROSTRUCTURES; SYSTEM; DIFFRACTION;

D O I：

10.1016/j.ijhydene.2009.03.055

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 phase relations and hydrogen storage properties of the (Ca2-xMgx)Ni-7 alloys were investigated. It was found that the maximum solid solubility of Mg in the (Ca,Mg)(2)Ni-7 phase is about x = 0.5 in the present study. The 'inter-block-layer' type stacking faults exist in the (Ca,Mg)(2)Ni-7 phase when Mg content is very low. However, the density of stacking faults decreases and the lattice parameters reduce as Mg content increases to its maximum solid solubility. Thus the (Ca1.5Mg0.5)Ni-7 alloy has a good reversibility of hydrogen absorption-desorption. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：4833 / 4837

页数：5

共 22 条

[1] PHONON ANOMALIES IN THE INTERMEDIATE-VALENCE COMPOUND CE0.9PR0.1NI5 [J].

BUHRER, W ;

ALEKSEEV, PA ;

LAZUKOV, VN ;

KIKOIN, KA ;

MISHCHENKO, AS ;

SADIKOV, IP ;

HEMPELMANN, R .

SOLID STATE COMMUNICATIONS, 1995, 94 (05) :329-334

[2] Mg substitution effect on the hydrogenation behaviour, thermodynamic and structural properties of the La2Ni7-H(D)2 system [J].

Denys, R. V. ;

Riabov, A. B. ;

Yartys, V. A. ;

Sato, Masashi ;

Delaplane, R. G. .

JOURNAL OF SOLID STATE CHEMISTRY, 2008, 181 (04) :812-821

[3] Atomic-scale ab initio study of the Zr-H system: II. Interaction of H with plane defects and mechanical properties [J].

Domain, C ;

Besson, R ;

Legris, B .

ACTA MATERIALIA, 2004, 52 (06) :1495-1502

[4] Investigation on microstructures and electrochemical performances of La0.75Mg0.25Ni3.5COx (x=0-0.6) hydrogen storage alloys [J].

Dong, Xiaoping ;

Zhang, Yanghuan ;

Lue, Fanxiu ;

Yang, Liying ;

Wang, Xinlin .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2007, 32 (18) :4949-4956

[5] Effect of La/Ni ratio on hydrogen storage properties of Mg-Ni-La system prepared by hydriding combustion synthesis followed by mechanical milling [J].

Gu, Hao ;

Zhu, Yunfeng ;

Li, Liquan .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (12) :2970-2974

[6] Stacking fault energy decrease in austenitic stainless steels induced by hydrogen pairs formation [J].

Hermida, JD ;

Roviglione, A .

SCRIPTA MATERIALIA, 1998, 39 (08) :1145-1149

[7] A Rietveld-analysis program RIETAN-98 and its applications to zeolites [J].

Izumi, F ;

Ikeda, T .

EUROPEAN POWDER DIFFRACTION, PTS 1 AND 2, 2000, 321-3 :198-203

[8] Structural investigation and hydrogen capacity of CaMg2Ni9:: a new phase in the AB2C9 system isostructural with LaMg2Ni9 [J].

Kadir, K ;

Kuriyama, N ;

Sakai, T ;

Uehara, I ;

Eriksson, L .

JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 284 (1-2) :145-154

[9] Structural properties of two deuterides LaY2Ni9D12.8 and CeY2Ni9D7.7 determined by neutron powder diffraction and X-ray absorption spectroscopy [J].

Latroche, M ;

Paul-Boncour, V ;

Percheron-Guégan, A .

JOURNAL OF SOLID STATE CHEMISTRY, 2004, 177 (07) :2542-2549

[10] Effect of rare earth elements on electrochemical properties of La-Mg-Ni-based hydrogen storage alloys [J].

Li, Yuan ;

Han, Da ;

Han, Shumin ;

Zhu, Xilin ;

Hu, Lin ;

Zhang, Zhong ;

Liu, Yuwen .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (03) :1399-1404

← 1 2 3 →