Microstructure and Electrochemical Hydrogen Storage Properties of Ball-milled MgxNi100-x+5wt% TiF3(x=50, 60, 70) Composite

被引：0
作者：
Hu, Feng [1 ]
Deng, Lei-Bo [2 ]
Ma, Qiang [3 ]
Xu, Jian-Yi [1 ]
机构：
[1] Inner Mongolia Univ Sci & Technol, Sch Met & Mat, Baotou 014010, Peoples R China
[2] Inner Mongolia Univ Sci & Technol, Elected State Key Lab, Baotou 014010, Peoples R China
[3] Inner Mongolia Univ Sci & Technol, Sch Math Phys & Biol Engn, Baotou 014010, Peoples R China
来源：
PROCEEDINGS OF THE 3RD INTERNATIONAL CONFERENCE ON MATERIAL ENGINEERING AND APPLICATION (ICMEA 2016) | 2016年 / 103卷
关键词：
Nanostructured Intermetallics; Hydrogen Storage; Diffusion; Mechanical Alloying and Milling; Grain Boundaries; Catalysis; ALLOYS; MGNI; HYDRIDE; NI;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The nanocrystalline and amorphous MgxNi100-x+ 5wt.% TiF3 (x=50, 60, 70) hydrogen storage alloys were synthesized by mechanical ball milling method. Microstructure and electrochemical performances of ball-milled alloys were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), electrochemical discharge capacity and cycling stability. The results show that the ball-milled hydrogen storage alloys hold a multiphase structure consisted of two main phases Mg2Ni and Ni as well as a small amount of third phase MgNi2 and TiNi. The ball milling Mg50Ni50+ 5wt.% TiF3 composite possesses optimal electrochemical discharge capacity, which is relevant to amorphous/nanocrystalline structure and hydride Mg2NiH4 phase after absorbing hydrogen. X-ray diffraction analysis indicates that ball-milled Mg50Ni50+ 5wt.% TiF3 composite exhibits the best electrochemical discharge properties.
引用
收藏
页码：239 / 244
页数：6
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