Preparation and electrochemical characteristics of a new type Mg-based hydrogen storage alloys

被引：0

作者：

Yuan, HT ^{[1
]}

Li, QD ^{[1
]}

Wang, YJ ^{[1
]}

Song, HN ^{[1
]}

Feng, Y ^{[1
]}

机构：

[1] Nankai Univ, Inst New Energy Mat Chem, Tianjin 300071, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2002年 / 23卷 / 04期

关键词：

Mg-based hydrogen storage alloys; electrode; electrochemical properties;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The Mg-based hydrogen storage alloys Mg1.5Al0.5-xNiVx (x=0, 0. 1, 0. 2, 0. 3, 0.4) were successfully synthesized by means of a diffusion method(MD). The structure of these alloys were examined by X-ray diffraction. A new phase was found in the alloys. Its chemical formula is Mg3AlNi2. Further studies reveal that the new phase has excellent electrochemical properties. The discharge capacity of Mg1.5Al0.5-xNiVx alloys increases owing to V addition and reaches the highest capacity of 333 mA . h . g(-1) (50 mA . g(-1), -0. 5 V vs. Hg/HgO) without any treatment. The improvement of cycle life was ascribed to the partial substitution of Al for Mg in the alloy.

引用

页码：517 / 520

页数：4

共 9 条

[1] Mg2Ni alloy for metal hydride electrodes
Chen, J
Bradhurst, DH
Dou, SX
Liu, HK
[J]. JOURNAL OF MATERIALS SCIENCE, 1998, 33 (19) : 4671 - 4675
[2] Effects of yttrium additions on the electrode performance of magnesium-based hydrogen storage alloys
Cui, N
Luan, B
Zhao, HJ
Liu, HK
Dou, SX
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 233 (1-2) : 236 - 240
[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] Study on the phase composition of Mg2-xMxNi (M=Al, Ti) alloys
Lü, GL
Chen, LS
Wang, LB
Yuan, HT
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2001, 321 (01) : L1 - L4
[5] NAM HG, 2000, J POWER SOURCES, V87, P118
[6] Electrochemical characteristics of an amorphous Mg0.9V0.1Ni alloy prepared by mechanical alloying
Nohara, S
Hamasaki, K
Zhang, SG
Inoue, H
Iwakura, C
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 280 (1-2) : 104 - 106
[7] Electrochemical characteristics of Al-substituted Mg2Ni as negative electrode
Xue, JS
Li, GX
Hu, YQ
Du, J
Wang, CQ
Hu, GY
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 307 : 240 - 244
[8] Electrochemical characteristics of amorphous Mg0.9M0.1Ni (M=Ni, Ti, Zr, Co and Si) ternary alloys prepared by mechanical alloying
Ye, H
Lei, YQ
Chen, LS
Zhang, H
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 311 (02) : 194 - 199
[9] Electrochemical characteristics of Mg2-xAlxNi (0≤x≤0.5) alloys
Yuan, HT
Wang, LB
Cao, R
Wang, YJ
Zhang, YS
Yan, DY
Zhang, WH
Gong, WL
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 309 (1-2) : 208 - 211

← 1 →