Model investigation of hydrogen absorption and desorption kinetics of nanocrystalline magnesium

被引：0
作者：
Liu Jing [1 ]
Li Qian
Chou Kuochih
Lin Genwen
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China
[2] Univ Sci & Technol Beijing, Met & Ecol Engn Sch, Beijing 100083, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2007年 / 36卷 / 10期
关键词：
hydrogen storage alloys; nanocrystalline magnesium; absorption and desorption kinetics; model;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The kinetics of hydrogen absorption and desorption of nanocrystalline magnesium powder was investigated adopting a new model, which quantized the improvement efficiency of the hydrogen absorption and desorption (Pd-doped or undoped). The results show that the ball milling process can decrease the activation energy of hydriding reaction, increases the hydriding rate of Mg powder by 30 times. The hydriding rate of Mg-1wt%Pd powder with 30 nm particle size is 6.6 times faster than that of the Mg powder with 30 nm. The hydriding activation energy of the former was calculated to be 38.74 kJ/molH(2) by the model.
引用
收藏
页码：1802 / 1806
页数：5
相关论文
共 17 条
[1]   A kinetic model for oxidation of Si-Al-O-N materials [J].
Chou, KC .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2006, 89 (05) :1568-1576
[2]   Kinetics of absorption and desorption of hydrogen in alloy powder [J].
Chou, KC ;
Li, Q ;
Lin, Q ;
Jiang, LJ ;
Xu, KD .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2005, 30 (03) :301-309
[3]  
Fang WB, 2005, RARE METAL MAT ENG, V34, P1017
[4]   Preparation and hydrogenation characteristics of Mg-30 wt.% Ti37.5V25Cr37.5 composite [J].
Hu, YQ ;
Yan, C ;
Zhang, HF ;
Ye, L ;
Hu, ZQ .
JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 375 (1-2) :265-269
[5]   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
[6]   Hydrogen interaction with mechanically alloyed magnesium-salt composite materials [J].
Ivanov, E ;
Konstanchuk, I ;
Bokhonov, B ;
Boldyrev, V .
JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 359 (1-2) :320-325
[7]  
JAE WO, 1998, J ALLOY COMPD, V278, P270
[8]  
JOSEPH B, 2000, J ALLOY COMPD, V312, P135
[9]   Investigation of the hydriding kinetic mechanism in the MgH2/Cr2O3-nanocomposite [J].
Li, Q ;
Xu, KD ;
Chou, KC ;
Lin, Q ;
Zhang, JY ;
Lu, XG .
INTERMETALLICS, 2005, 13 (11) :1190-1194
[10]   Determination and interpretation of the hydriding and dehydriding kinetics in mechanically alloyed LaNiMg17 composite [J].
Li, Q ;
Chou, KC ;
Xu, KD ;
Lin, Q ;
Jiang, LJ ;
Zhan, F .
JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 387 (1-2) :86-89
12