Hydrogen Storage Alloys with PuNi3 ‐ Type Structure as Metal Hydride Electrodes
Hydrogen Storage Alloys with PuNi3 ‐ Type Structure as Metal Hydride Electrodes
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DOI：
10.1149/1.1391115
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发表时间：
1999
影响因子：
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通讯作者：
J. Chen;N. Kuriyama;H. Takeshita;Hideaki Tanaka;T. Sakai;M. Haruta
中科院分区：
文献类型：
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作者：
J. Chen;N. Kuriyama;H. Takeshita;Hideaki Tanaka;T. Sakai;M. Haruta
使用粉末烧结法合成金属间化合物LaCaMgNi 9、CaTiMgNi 9、LaCaMgNi 6Al 3和LaCaMgNi 6 Mn 3（PuNi 3型）。利用扫描电镜和X射线衍射仪对合金的显微组织和初生相进行了观察。压力-组成等温线表明，所有合金都可以在20 ℃和3.3 MPa的氢压力下可逆地吸收和解吸高达1.8wt%的氢。烧结后的样品用作金属氢化物电极的活性材料。氢化物稳定性和电化学性能，结合低成本的原材料，使这些化合物对金属氢化物电极有吸引力。
A powder sintering method was used to synthesize the intermetallic compounds LaCaMgNi9, CaTiMgNi9, LaCaMgNi6Al3, and LaCaMgNi6Mn3 (PuNi3-type). The microstructure and primary phases were observed by scanning electron microscopy and X-ray diffraction. The pressure-composition isotherms showed that all alloys could reversibly absorb and desorb up to 1.8 wt% hydrogen at 20 C and a hydrogen pressure of 3.3 MPa. The sintered samples were employed as the active materials of metal hydride electrodes. The hydride stability and electrochemical performance, combined with low cost raw materials, make these compounds attractive for metal hydride electrodes.