nickel;titanium | 12059-18-6

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相过渡金属化合物
• 英文名称: nickel;titanium
• CAS: 12059-18-6
• 化学式: Ni₂Ti
• 分子量: 165.26
• InChiKey: AGRZSLXZTRXJMD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  3
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  镍 、 四氢化物钛 以 neat (no solvent) 为溶剂， 生成 nickel;titanium
  参考文献：
  名称：

  Surface and bulk properties of the TiyZr1−y(VxNi1−x)2 alloy system as active electrode material in alkaline electrolyte

  摘要：

  Multicomponent Zr-Ni-based alloys of the AB(2) Laves phase structure possess promising properties as electrode materials in reversible metal hydride batteries. Previously, we have shown that ZrV0.5Ni1.5 reaches a reversible capacity of 345 mA h g(-1) (A. Zuttel, F. Meli and L. Schlapbach, J. Alloys Compounds, 203 (1994) 235-241); however, the electrode requires approximately 30 activation cycles to reach the maximum capacity due to an oxide layer on the grain surfaces. Zirconium oxide has been reported to be a strong barrier to hydrogen penetration (J.O. Strom-Olsen, Y. Zhao and D.H. Ryan, J. Less-Common Met., 272-174 (1991) 922). The oxide layer on the alloy grains can be dissolved in strong alkaline or acid solutions and a high nickel concentration remains on the surface (A. Zuttel, F. Meli and L. Schlapbach, J. Alloys Compounds, 209 (1994) 99-105). In this paper, we report the effect of the partial substitution of zirconium by titanium. The formation of a compact zirconium oxide film can be prevented by an increase in the defect density, i.e. by the presence of titanium. Titanium is also oxidized on the surface; however, a mixture of titanium and zirconium oxides should be much less of a barrier to hydrogen penetration compared with a pure zirconium oxide layer. Increasing titanium content in TiyZr1-y(VxNi1-x)(2) alloys results in an increased plateau pressure and a lower capacity. Differences in the kinetics can be explained by the significant changes in the composition of the surface layers (approximately 30 Angstrom).

  DOI：

  10.1016/0925-8388(95)01745-3

文献信息

• Surface and bulk properties of the TiyZr1−y(VxNi1−x)2 alloy system as active electrode material in alkaline electrolyte
  作者：Andreas Züttel、Felix Meli、Louis Schlapbach

  DOI：10.1016/0925-8388(95)01745-3

  日期：1995.12

  Multicomponent Zr-Ni-based alloys of the AB(2) Laves phase structure possess promising properties as electrode materials in reversible metal hydride batteries. Previously, we have shown that ZrV0.5Ni1.5 reaches a reversible capacity of 345 mA h g(-1) (A. Zuttel, F. Meli and L. Schlapbach, J. Alloys Compounds, 203 (1994) 235-241); however, the electrode requires approximately 30 activation cycles to reach the maximum capacity due to an oxide layer on the grain surfaces. Zirconium oxide has been reported to be a strong barrier to hydrogen penetration (J.O. Strom-Olsen, Y. Zhao and D.H. Ryan, J. Less-Common Met., 272-174 (1991) 922). The oxide layer on the alloy grains can be dissolved in strong alkaline or acid solutions and a high nickel concentration remains on the surface (A. Zuttel, F. Meli and L. Schlapbach, J. Alloys Compounds, 209 (1994) 99-105). In this paper, we report the effect of the partial substitution of zirconium by titanium. The formation of a compact zirconium oxide film can be prevented by an increase in the defect density, i.e. by the presence of titanium. Titanium is also oxidized on the surface; however, a mixture of titanium and zirconium oxides should be much less of a barrier to hydrogen penetration compared with a pure zirconium oxide layer. Increasing titanium content in TiyZr1-y(VxNi1-x)(2) alloys results in an increased plateau pressure and a lower capacity. Differences in the kinetics can be explained by the significant changes in the composition of the surface layers (approximately 30 Angstrom).