Cerium;lanthanum;neodymium;praseodymium

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相镧系化合物
• 英文名称: Cerium;lanthanum;neodymium;praseodymium
• 英文别名: cerium;lanthanum;neodymium;praseodymium
• 化学式: Ce₀La₀Nd₀Pr₀
• 分子量: 139.533
• InChiKey: YLENEZYZPLSAAV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.0
• 重原子数：
  4
• 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

• 作为反应物：
  描述：

  magnesium 、 Cerium;lanthanum;neodymium;praseodymium 以 melt 为溶剂， 生成
  参考文献：
  名称：

  Mg3Mm compound based hydrogen storage materials

  摘要：

  Hydrogen storage properties, composition and phase structures of the Mg-Mm (Mm is abbreviated for misch metal) and Mg-Mm-Ni alloys prepared by induction melting were investigated by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX) and pressure-composition-isotherms (PCIs) measurement. It has been found that the Mg3MM Compound with the D0(3) structure can absorb hydrogen at room temperature with rapid hydriding kinetics. The desorption of hydrogen Of Mg(3)Mm and Mg(3)MmNi(0.1). alloys takes place at 281 and 250 degrees C and the reversible hydrogen storage capacities reach 2.91 and 2.51 wt.%, respectively. The enthalpy (Delta H) and entropy (Delta S) Of Mg(3)Mm-H dehydriding reaction were determined by using, van't Hoff plot. Hydrogen absorption kinetics of the Mg(3)Mm alloy at room temperature was also measured and the experimental curves can be well fitted by using Avrami-Erofeev equation. (D 2007 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jallcom.2007.02.160

文献信息

• Influence of composition on phase occurrence during charge process of AB5+x Ni-MH negative electrode materials
  作者：S. Vivet、M. Latroche、Y. Chabre、J.-M. Joubert、B. Knosp、A. Percheron-Guégan

  DOI：10.1016/j.physb.2005.02.012

  日期：2005.5

  Abstract Multi-substituted LaNi 5 -type alloys (AB 5+ x ) are widely used as negative electrode materials in commercial Ni-MH batteries. Cobalt substitution on Ni sites allows to enhance battery cycle life by reducing alloy pulverization induced by hydrogen cycling. This improvement is attributed to the occurrence of a three-phase process (α, β and γ) during electrochemical hydrogen loading. In order

  摘要 多取代LaNi 5 型合金（AB 5+ x ）被广泛用作商用镍氢电池的负极材料。Ni 位点上的钴替代物可以通过减少氢循环引起的合金粉化来提高电池循环寿命。这种改进归因于电化学氢负载过程中发生的三相过程（α、β和γ）。为了更好地了解成分对相出现的影响并降低昂贵钴的比率，在室温下对两种不同电极材料 MmNi 4.07 Mn 0.63 Al 0.2 M 进行电化学充电期间进行了原位中子衍射研究0.4，M=Fe 和 Mn，B/A=5.3。这些不含钴的化合物显示出与商业材料相当的循环寿命。结果表明，这些样品也观察到三个阶段。γ 相含量取决于 M 并且对于 M=Fe 比在 M=Mn 时更高。这些结果与改进的循环寿命和合金粉碎过程有关。