论文部分内容阅读
The hydrogen absorption and desorption behavior of TiMn_(1.25)Cr_(0.25) alloys with VFe substitution for partial Mn was inves-tigated at 273, 293 and 313 K. It is found that VFe substitution increases their hydrogen storage capacity, decreases the plateau pres-sure and the hysteresis factor of their pressure - composition - temperature (PCT) curves. After annealing treatment at 1223 K for 6 h,TiMn_(0.95)Cr_(0.25)(VFe)_(0.3) alloy exhibits a lower hydrogen desorption plateau pressure (0.27 MPa at 313 K) and a smaller hysteresis factor(0.13 at 313 K); the maximum and effective hydrogen storage capacities (mass fraction) are 2.03% and 1.12% respectively, whichcan satisfy the demand of hydrogen storage tanks for proton exchange membrane fuel cells (PEMFC).
The hydrogen absorption and desorption behavior of TiMn_ (1.25) Cr_ (0.25) alloys with VFe substitution for partial Mn was inves- tigated at 273, 293 and 313 K. It is found that VFe substitution increases their hydrogen storage capacity, decreases the plateau pres After annealing treatment at 1223 K for 6 h, TiMn_ (0.95) Cr_ (0.25) (VFe) _ (0.3) alloy exhibits a lower hydrogen desorption plateau the maximum and effective hydrogen storage capacities (mass fraction) are 2.03% and 1.12% respectively, which can satisfy the demand of hydrogen storage tanks for proton exchange (0.27 MPa at 313 K) and a smaller hysteresis factor membrane fuel cells (PEMFC).