Hydriding and electrochemical characteristics of a homogeneous amorphous Mg2Ni-Ni composite

被引：93

作者：

Iwakura, C ^{[1
]}

Inoue, H ^{[1
]}

Zhang, SG ^{[1
]}

Nohara, S ^{[1
]}

机构：

[1] Univ Osaka Prefecture, Coll Engn, Dept Appl Chem, Sakai, Osaka 5998531, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 270卷 / 1-2期

关键词：

nickel-hydrogen battery; hydrogen storage alloy; Mg2Ni; amorphous; ball-milling;

D O I：

10.1016/S0925-8388(98)00517-9

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：

Hydriding and electrochemical characteristics of a homogeneous amorphous Mg2Ni-Ni composite prepared by ball-milling of Mg2Ni alloy with Ni (70 wt.% vs. Mg2Ni) were investigated. It was found that the Mg2Ni-Ni composite absorbed hydrogen to the amount of 4.0 wt.% vs. Mg2Ni [2.4 wt.% vs. (Mg2Ni+70 wt.% Ni)] at a high rate under a hydrogen pressure of 3 MPa at 30 degrees C. Furthermore, this alloy exhibited an extremely high discharge capacity of similar to 1082 mAh g(Mg2Ni)(-1) [636 mAh g(Mg2Ni +70 wt.% Ni)(-1)] at 30 degrees C, which exceeded the theoretically calculated value of 999 mAh g(Mg2Ni)(-1) on the basis of Mg2NiH4 for crystalline Mg2Ni. (C) 1998 Elsevier Science S.A.

引用

页码：142 / 144

页数：3

共 11 条

[1] INOUE H, 1998, IN PRESS ELECTROCHIM
[2] Surface modification of MgNi alloy with graphite by ball-milling for use in nickel-metal hydride batteries
Iwakura, C
Nohara, S
Inoue, H
Fukumoto, Y
[J]. CHEMICAL COMMUNICATIONS, 1996, (15) : 1831 - 1832
[3] The hydrogen storage properties of new Mg2Ni alloy
Kohno, T
Tsuruta, S
Kanda, M
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (09) : L198 - L199
[4] Effect of partial substitution on hydrogen storage properties of Mg2Ni alloy
Kohno, T
Kanda, M
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (07) : 2384 - 2388
[5] ELECTROCHEMICAL-BEHAVIOR OF SOME MECHANICALLY ALLOYED MG-NI-BASED AMORPHOUS HYDROGEN STORAGE ALLOYS
LEI, YQ
WU, YM
YANG, QM
WU, J
WANG, QD
[J]. ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, 1994, 183 : 379 - 384
[6] Compositional and structural characteristics of MgNi alloy prepared by mechanical alloying for use as negative electrodes in nickel-metal hydride batteries
Nohara, S
Inoue, H
Fukumoto, Y
Iwakura, C
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 259 (1-2) : 183 - 185
[7] Electrochemical characteristics of a homogeneous amorphous alloy prepared by ball-milling Mg2Ni with Ni
Nohara, S
Fujita, N
Zhang, SG
Inoue, H
Iwakura, C
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 267 (1-2) : 76 - 78
[8] NOHARA S, 1997, J ALLOY COMPD, V252, P16
[9] Hydriding properties of the Mg2Ni-H system synthesized by reactive mechanical grinding
Orimo, S
Fujii, H
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 232 (1-2) : L16 - L19
[10] Notable hydriding properties of a nanostructured composite material of the Mg2Ni-H system synthesized by reactive mechanical grinding
Orimo, S
Fujii, H
Ikeda, K
[J]. ACTA MATERIALIA, 1997, 45 (01) : 331 - 341

← 1 2 →