Abstract
The hydrogen storage properties of the Ti 3Ni 2 alloys prepared by the sintering process and the melting process, respectively were studied. The results show that the sintered alloy has many micro voids which are beneficial to improve the electrochemical hydrogen storage capacity. The sintered alloy has the maximum discharge capacity C max of 305 mAh/g, which is much larger than that of the melt alloy (242 mAh/g). Furthermore, electrochemical kinetic properties of the sintered alloy are also better than those of the melted alloy, because the sintering process can improve the diffusion of hydrogen in the Ti 3Ni 2 alloy. Therefore, the hydrogen diffusion coefficient D is enhanced from 7.16×10 -10 cm 2/s of the melted alloy to 3.2×10 -9 cm 2/s of the sintered alloy.
| Original language | English |
|---|---|
| Pages (from-to) | 490-493 |
| Number of pages | 4 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 41 |
| Issue number | 3 |
| State | Published - Mar 2012 |
Keywords
- Electrochemical properties
- Hydrogen storage alloy
- Preparation method
- Ti Ni alloy