Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1278262 | International Journal of Hydrogen Energy | 2008 | 8 Pages |
Abstract
In hydrogen solid–gas reaction at 300 K and 1 bar, the hydrogen content for Ti3.87Ni1.73Fe0.7Ox (0.2≤ × ≤0.8) alloys was in range 1.93–0.05 (Cwt.H,%), and discharge capacity of 360–235 A h/kg was achieved accordingly. The ΔHH2ΔHH2 and ΔSH2ΔSH2 values of −32.29 kJ mol−1 and −111.04 J mol−1 K−1, respectively, for Ti3.87Ni1.73Fe0.7O0.5 alloy were obtained using experimental PCT relations, where hysteresis effect was only slightly visible. The half-cell potentials (vs. Hg/HgO) of metal hydride (MH) electrodes based on Ti3.87Ni1.73Fe0.7Ox (0.2≤ ×≤ 0.8) alloys were calculated.Ti3.87Ni1.73Fe0.7Ox (0.2≤ × ≤0.5) alloys might meet the requirements of general criteria for MH electrode, but only with the exception of good corrosion resistance.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
I. Saldan, R. Burtovyy, H.-W. Becker, V. Ader, Ch. Wöll,