Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1283362 | International Journal of Hydrogen Energy | 2009 | 7 Pages |
Abstract
Transition metal borides and silicides prepared by mechanical alloying (MA) and chemical reduction methods (CR) were introduced to improve the corrosion resistance of magnesium-based hydrogen storage alloys. The additive of FeB prepared by MA can remarkably enhance the discharge capacity and cycling stability which has initial discharge capacity of 355.9 mA h gâ1 and keeps 224 mA h gâ1 after 100 cycles, and the exchange density I0 of MgNi-NiB(CR) electrodes is 344.80 mA gâ1 but MgNi is only 67.6 mA gâ1 which leads to the better rate capability of the composite alloys. The results of SEM characterization, cyclic charge-discharge tests, potentiodynamic polarization, linear polarization and AC impedance experiment show that the corrosion inhibition property of MgNi in alkaline is improved by transition metal boride and silicide additives.
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Authors
Li-Fang Jiao, Hua-Tang Yuan, Yi-Jing Wang, Yong-Mei Wang,