Synthesis of Intermetallic Compounds by Using Lithium Hudride

作     者：SokolovVV OsadchayaLI 等 

作者机构：Inst. of Inorg. Chem. SB of RAS Novosibirsk 630090 Russian Federation 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2002年第20卷第4期

页      面：256-258页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

主　　题：rare earths hydrogen absorbing compounds Ni-MH battery electrochemistry 

摘      要：Intermetallic compounds of AB 5 type are promising materials for M-H batteries. In this report we present the results about the influence of quality of intermetallic compounds prepared by a new method of synthesis on their electrochemical properties. The well-known intermetallic Ln 1-xM xNi 5-yMe y (Ln=La, Mm; M=Zr; Me=Mn, Ge, Sn, Al, Co+Sn, Co+Ge) compounds were synthesized by using mixtures of oxides, chlorides and carbonates of metals by interaction with lithium hydride at 700～1000 ℃. Prepared samples have the uniform microstructure with average dimension of particles about 20～30 μm. Electrochemical tests show that kinetic behaviour of compositions are satisfactory under current up to 200 mA·g -1. These compositions require practically no activation and limiting values of the discharge capacity were reached at 2～3 cycle up to 300 mAh·g -1, which can be considered as most promising for practice.