Microstructure characterization and hydrogen storage properties study of Mg2Ni0.92M0.08 (M = Ti, V, Fe or Si) alloys
Microstructure characterization and hydrogen storage properties study of Mg2Ni0.92M0.08 (M = Ti, V, Fe or Si) alloys
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Mg2Ni0.92M0.08(M=Ti、V、Fe或Si)合金的显微组织表征和储氢性能研究
DOI:
10.1016/j.pnsc.2018.06.006
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发表时间:
2018-08
期刊:
影响因子:
--
通讯作者:
Si Tingzhi
中科院分区:
文献类型:
--
作者:
Zhang Yue;Zhang Hairi;Ding Xiaoli;Liu Dongming;Zhang Qingan;Si Tingzhi
In the present study Mg2Ni-type compounds alloyed independently with Ti, V, Fe and Si were successfully prepared by wet-milling followed by sintering. Although these alloyed Mg2Ni compounds exhibited a similar hydrogen storage mechanism as that of pure Mg2Ni, the dissolution of Ti, V or Fe into the Mg2NiH4lattice had a considerable catalytic effect on hydrogen desorption from additional MgH2. The further structure investigations clearly indicated that the substitution of Ti for Ni could suppress the formation of the micro-twined low-temperature phase (LT2) and promote the formation of the high-temperature phase (HT), thus resulting in remarkably improved hydrogen desorption kinetics for the Mg2Ni0.92Ti0.08–H system.
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