A comparative study on effect of microwave sintering and conventional sintering on properties of Nd-Mg-Ni-Fe3O4 hydrogen storage alloy

作者：Meng, Jie; Pan, Yan-Biao; Luo, Qun; An, Xue-Hui; Liu, Yang; Li, Qian^*; Chou, Kuo-Chih

来源：International Journal of Hydrogen Energy, 2010, 35(15): 8310-8316.

DOI：10.1016/j.ijhydene.2009.12.011

• Hydrogen storage alloy
• Microwave sintering
• Conventional sintering
• Hydrogen storage property

The hydrogen storage samples of Nd-Mg-Ni-Fe3O4 alloy were prepared by microwave sintering (MS) and conventional sintering (CS) methods, respectively. Their phase structures, morphologies, hydrogen storage properties were intensively studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and pressure-composition-temperature (PCT). XRD and SEM analysis results show that the microwave sintered Nd-Mg-Ni-Fe3O4 alloy has multiphase structure involving Mg and homogeneous grains, whereas the alloy prepared by CS has Mg41Nd5 phase and coarse grains. The alloy prepared by MS can release 85% of the saturated hydrogen capacity at 573 K in 600 s and its characteristic reaction time (t(c)) is less than 2900 s, while the alloy prepared by CS releases less than 70% of the absorbed hydrogen at 573 K wi

• 出版日期2010-8
• 单位上海大学; 北京科技大学