Microstructure and Electrochemical Hydrogen Storage Properties of Ball-milled mgxni100-x+5wt %tif3 (x=50, 60, 70) Composite

DOI

10.2991/icmea-16.2016.39How to use a DOI?

Keywords

Nanostructured Intermetallics, Hydrogen Storage, Diffusion, Mechanical Alloying and Milling, Grain Boundaries, Catalysis.

Abstract

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.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Feng HU
AU  - Lei-Bo DENG
AU  - Qiang MA
AU  - Jian-Yi XU
PY  - 2016/12
DA  - 2016/12
TI  - Microstructure and Electrochemical Hydrogen Storage Properties of Ball-milled mgxni100-x+5wt %tif3 (x=50, 60, 70) Composite
BT  - Proceedings of the 3rd International Conference on Material Engineering and Application (ICMEA 2016)
PB  - Atlantis Press
SP  - 239
EP  - 244
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmea-16.2016.39
DO  - 10.2991/icmea-16.2016.39
ID  - HU2016/12
ER  -