CRYSTAL STRUCTURE AND ELECTROCHEMICAL PROPERTIES OF Zr(Mn_(1-x)Ni_x)_2(0.40≤x≤0.75) HYDROGEN STORAGE ALLOYS

作     者：W.K. Zhang, C.A. Ma, X.G. Yang, H. Huang, Y.Q. Lei and Q.D. Wang (Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou 310014, China Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China) 

作者机构：Dept. of Appl. Chem. Zhejiang Univ. of Technol. Hangzhou 310014 China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2001年第14卷第1期

页      面：56-62页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the National Advanced Materials Committee of China andthe National Natural Science Foundation of China(Grunt NO.5 

主　　题：hydrogen storage alloy crystal structure phase abundance,elec- trochemical property 

摘      要：The crystal structure, phase abundance and the electrochemical properties of Zr(Mn1-x Nix)2 (0.40 ≤x≤0.75) alloys were investigated by means of XRD, Rietveld refinement method and electrochemical measurements. The alloys are multiphase. C15 Laves phase occurs as a main phase accompanying with C14 phase and other minor phases, indicating that Ni element is C15-stabilized element for ZrMn2 alloy. The phase abundance and lattice parameters of Laves phase are influenced significantly by Ni substitution. The Zr(Mn0.45 Ni0.55)2 alloy with the highest amount of C15 phase exhibits the maximum electrochemical capacity of 242m Ah/g. C14 phase occurring in Zr-Mn-Ni alloys is beneficial for the electrochemical kinetics of hydride electrodes.