Hydriding kinetics of the LaNiMg17-H system prepared by hydriding combustion synthesis

被引：14

作者：

Li, Q ^{[1
]}

Chou, KC

Lin, Q

Hang, LJ

Zhan, F

机构：

[1] Gen Res Inst NonFerrous Met, Res Ctr Energy Mat & Technol, Beijing 100088, Peoples R China

[2] Univ Sci & Technol Beijing, Dept Chem Phys, Beijing 100083, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 373卷 / 1-2期

关键词：

hydrogen storage alloys; hydriding kinetics; two-phase (alpha-beta) region; LaNiMg17; alloy;

D O I：

10.1016/j.jallcom.2003.11.017

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：

An experimental investigation of the rate of hydrogen absorption at various pressures and temperatures in the two-phase region of (alpha-beta) LaNiMg17 powder is presented. The results are fitted well by using the Jander diffusion model, [1 - (1 - alpha)(1/3)](2) = k(T, P)t, which suggests that the rate-controlling step for hydrogen absorption is three-dimensional diffusion. The apparent activation energy for such diffusion process is 92 +/- 3 kJ/mol H-2 obtained from the absorption data. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：122 / 126

页数：5

共 27 条

[1] Hydriding combustion synthesis for the production of hydrogen storage alloy [J].

Akiyama, T ;

Isogai, H ;

Yagi, J .

JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 252 (1-2) :L1-L4

[2] Kinetics of hydrogen absorption and desorption of magnesium nickel alloy [J].

Akiyama, T ;

Tazaki, TA ;

Takahashi, R ;

Yagi, J .

INTERMETALLICS, 1996, 4 (08) :659-662

[3] Numerical analysis of absorbing and desorbing mechanism for the metal hydride by homogenization method [J].

Asakuma, Y ;

Miyauchi, S ;

Yamamoto, T ;

Aoki, H ;

Miura, T .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2003, 28 (05) :529-536

[4] Hydriding-dehydriding properties of crystalline and amorphous La1.8Ca0.2Mg16Ni alloy [J].

Cai, GM ;

Chen, CP ;

Chen, Y ;

Chen, LX ;

Wang, QD .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2003, 28 (05) :509-513

[5] Rate determining step in the absorption and desorption of hydrogen by magnesium [J].

Fernández, JF ;

Sánchez, CR .

JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 340 (1-2) :189-198

[6] The electrochemical hydriding properties of Mg-Ni-Zr amorphous alloy [J].

Goo, NH ;

Lee, KS .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2002, 27 (04) :433-438

[7] Mechanically milled Mg composites for hydrogen storage - The transition to a steady state composition [J].

Gross, KJ ;

Spatz, P ;

Zuttel, A ;

Schlapbach, L .

JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 240 (1-2) :206-213

[8] Structural study and hydrogen sorption kinetics of ball-milled magnesium hydride [J].

Huot, J ;

Liang, G ;

Boily, S ;

Van Neste, A ;

Schulz, R .

JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 293 :495-500

[9]

LI Q, 2003, J MATER SCI, V38, P1

[10] Hydrogen desorption kinetics of a mechanically milled MgH25at.%V nanocomposite [J].

Liang, G ;

Huot, J ;

Boily, S ;

Schulz, R .

JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 305 (1-2) :239-245

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