Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (5): 463-468.DOI: 10.3724/SP.J.1077.2012.00463
• Orginal Article • Previous Articles Next Articles
WANG Yan-Zhi1, 2, ZHAO Min-Shou1, 2
Received:
2011-06-14
Revised:
2011-08-22
Published:
2012-05-10
Online:
2012-03-31
CLC Number:
WANG Yan-Zhi, ZHAO Min-Shou. Structure and Electrochemical Characteristics of Ti-V-based Solid Solution/AB5-type La-Mg-based Alloy Composite Hydrogen Storage Material[J]. Journal of Inorganic Materials, 2012, 27(5): 463-468.
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Sample | Phase | Lattice parameter | Cell volume /nm3 | |
---|---|---|---|---|
a / nm | c / nm | |||
TVS alloy | BCC | 0.2969 | - | 0.02617 |
C14 Laves | 0.4948 | 0.8093 | 0.17160 | |
COM alloy | BCC | 0.2974 | - | 0.02630 |
C14 Laves | 0.4943 | 0.8069 | 0.17070 |
Table 1 Lattice parameters of BCC and C14 Laves phase in TVS and COM alloy
Sample | Phase | Lattice parameter | Cell volume /nm3 | |
---|---|---|---|---|
a / nm | c / nm | |||
TVS alloy | BCC | 0.2969 | - | 0.02617 |
C14 Laves | 0.4948 | 0.8093 | 0.17160 | |
COM alloy | BCC | 0.2974 | - | 0.02630 |
C14 Laves | 0.4943 | 0.8069 | 0.17070 |
Phase | Composition / at% | ||||||||
---|---|---|---|---|---|---|---|---|---|
Ti | Zr | V | Cr | Ni | Mg | Al | Co | La | |
BCC phase | 4.95 | 10.04 | 38.03 | 14.86 | 7.39 | 12.02 | 10.08 | 2.62 | - |
C14 Laves phase | 26.45 | 28.54 | 14.97 | 2.77 | 9.56 | 8.96 | 7.78 | 0.98 | - |
Secondary phase | 1.22 | 29.80 | 31.54 | 6.34 | 9.94 | 7.49 | 6.39 | 1.18 | 6.10 |
Table 2 Phase compositions of COM alloy
Phase | Composition / at% | ||||||||
---|---|---|---|---|---|---|---|---|---|
Ti | Zr | V | Cr | Ni | Mg | Al | Co | La | |
BCC phase | 4.95 | 10.04 | 38.03 | 14.86 | 7.39 | 12.02 | 10.08 | 2.62 | - |
C14 Laves phase | 26.45 | 28.54 | 14.97 | 2.77 | 9.56 | 8.96 | 7.78 | 0.98 | - |
Secondary phase | 1.22 | 29.80 | 31.54 | 6.34 | 9.94 | 7.49 | 6.39 | 1.18 | 6.10 |
Constituent element | Concentration in KOH / (mg·L-1) | |||
---|---|---|---|---|
50 cycles | 100 cycles | |||
TVS | COM | TVS | COM | |
Ti | 0.031 | 0.024 | 0.084 | 0.117 |
Zr | 13.524 | 12.693 | 27.393 | 19.742 |
V | 31.052 | 26.961 | 74.094 | 54.263 |
La | - | - | - | 0.003 |
Mg | - | - | - | 0.004 |
Table 3 Concentration of main constituent element dissolved in KOH electrolyte for TVS and COM alloy electrode
Constituent element | Concentration in KOH / (mg·L-1) | |||
---|---|---|---|---|
50 cycles | 100 cycles | |||
TVS | COM | TVS | COM | |
Ti | 0.031 | 0.024 | 0.084 | 0.117 |
Zr | 13.524 | 12.693 | 27.393 | 19.742 |
V | 31.052 | 26.961 | 74.094 | 54.263 |
La | - | - | - | 0.003 |
Mg | - | - | - | 0.004 |
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