Intermetallic TiMn₂ compound was employed for improving the de/rehydrogenation kinetics behaviors of MgH₂ powders. The metal hydride powders, obtained after 200 h of reactive ball milling was doped with 10 wt% TiMn₂ powders and high-energy ball milled under pressurized hydrogen of 70 bar for 50 h. The cold-pressing technique was used to consolidate them into 36-green buttons with 12 mm in diameter. During consolidation, the hard TiMn₂ spherical powders deeply embedded into MgH₂ matrix to form homogeneous nanocomposite bulk material. The apparent activation energies of hydrogenation and dehydrogenation for the fabricated buttons were 19.3 kJ/mol and 82.9 kJ/mol, respectively. The present MgH₂/10 wt% TiMn₂ nanocomposite binary system possessed superior hydrogenation/dehydrogenation kinetics at 225 °C to absorb/desorb 5.1 wt% hydrogen at 10 bar/200 mbar H₂ within 100 s and 400 s, respectively. This new system revealed good cyclability of achieving 414 cycles within 600 h continuously without degradations. For the present study, the consolidated buttons were used as solid-state hydrogen storage for feeding proton-exchange membrane fuel cell through a house made Ti-reactor at 250 °C. This nanocomposite system possessed good capability for providing the fuel cell with hydrogen flow at an average rate of 150 ml/min. The average current and voltage outputs were 3 A and 5.5 V, respectively.

金属间化合物TiMn ₂用于改善MgH ₂粉末的脱氢/再氢化动力学行为。在200 h反应球磨后获得的金属氢化物粉末中掺入10 wt％TiMn ₂粉末，并在70 bar的加压氢气下将高能球磨50 h。使用冷压技术将它们合并为直径为12 mm的36个绿色按钮。在固结过程中，坚硬的TiMn ₂球形粉末深深嵌入MgH ₂基质中，形成均匀的纳米复合块状材料。所制造的纽扣的表观氢化和脱氢活化能分别为19.3kJ / mol和82.9kJ / mol。目前的MgH ₂/ 10 wt％的TiMn ₂纳米复合二元体系在225°C时具有优异的氢化/脱氢动力学，分别在100 s和400 s内在10 bar / 200 mbar H ₂下吸收/解吸5.1 wt％的氢。这个新系统显示出良好的循环能力，可以在600 h内连续实现414个循环而不会降低性能。对于本研究，将固结的纽扣用作固态氢存储装置，以使质子交换膜燃料电池在250°C下通过自制的Ti反应器供入。该纳米复合材料系统具有以150ml / min的平均速率为燃料电池提供氢气流的良好能力。平均电流和电压输出分别为3 A和5.5V。