Mg-based compounds for hydrogen and energy storage
Mg-based compounds for hydrogen and energy storage
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DOI：
10.1007/s00339-016-9601-1
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发表时间：
2016-02-01
影响因子：
2.7
通讯作者：
Yartys, V. A.
中科院分区：
文献类型：
--
作者：
Crivello, J. -C.;Denys, R. V.;Yartys, V. A.
镁基合金作为具有成本效益的储氢材料引起了人们的极大兴趣，与二元Mg-H系统相比，镁基合金允许氢的高重量储存容量与氢吸收和释放的快速速率以及金属-氢键的显著不稳定性的组合。本文综述了各种镁化合物，包括（1）RE-Mg-Ni三元合金（RE = La，Pr，Nd）;（2）含p元素的镁合金（X = Si，Ge，Sn，Al）;（3）含d元素的镁合金（Ti，Fe，Co，Ni，Cu，Zn，Pd）。讨论了镁基合金（LaMg_（12），LaMg_（11）Ni）和在100 MPa以上压力下合成的Ni-H键稳定的异常高压合金（MgNi_2 H_3）的氢化-还原-脱附-再结合过程。本文综述了镁基合金的性能与金属-氢相互作用的p-T条件、初始合金的化学成分、晶体结构和显微组织状态之间的关系。
Magnesium-based alloys attract significant interest as cost-efficient hydrogen storage materials allowing the combination of high gravimetric storage capacity of hydrogen with fast rates of hydrogen uptake and release and pronounced destabilization of the metal-hydrogen bonding in comparison with binary Mg-H systems. In this review, various groups of magnesium compounds are considered, including (1) RE-Mg-Ni hydrides (RE = La, Pr, Nd); (2) Mg alloys with p-elements (X = Si, Ge, Sn, and Al); and (3) magnesium alloys with d-elements (Ti, Fe, Co, Ni, Cu, Zn, Pd). The hydrogenation- disproportionation-desorption-recombination process in the Mg-based alloys (LaMg12, LaMg11Ni) and unusually high-pressure hydrides synthesized at pressures exceeding 100 MPa (MgNi2H3) and stabilized by Ni-H bonding are also discussed. The paper reviews interrelations between the properties of the Mg-based hydrides and p-T conditions of the metal-hydrogen interactions, chemical composition of the initial alloys, their crystal structures, and microstructural state.