Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5145500 | International Journal of Hydrogen Energy | 2017 | 6 Pages |
Abstract
Crystal structure and electrochemical properties of the Zr1âxTixNi (0.05 â¤Â x â¤Â 0.5) alloys were investigated. X-ray diffraction spectra showed that the primary phase of all Zr1âxTixNi alloys had the B33-type orthorhombic crystal structure, which was characteristic of ZrNi, and the unit cell volume of the primary phase linearly decreased with an increase in the x value. In the charge-discharge tests with the Zr1âxTixNi alloy negative electrodes, the initial discharge curves for the alloys with x â¥Â 0.3 had two plateaus. Both plateau potentials negatively shifted with an increase in the x value. The initial discharge capacity for the Zr0.6Ti0.4Ni alloy negative electrode was 349 mAh gâ1 at 25 mA gâ1 and 333 K, which was the highest in this study. The high-rate dischargeability and cycle performance were also improved by the partial replacement of Zr by Ti.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Akihiro Matsuyama, Hironori Mizutani, Takumi Kozuka, Hiroshi Inoue,