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中文摘要：
RE-Mg基AB2型LaMgNi4贮氢合金的理论容量为470mAh/g，但实际放电容量只有约300mAh/g，如何进一步提高RE-Mg基AB2型贮氢合金的实际放电容量是重要的科学问题。本项目组采用速凝技术制备出了以柱状晶为主的RE-Mg基LaMgNi4贮氢合金，最大放电容量达到380mAh/g，速凝合金经适当热处理后，最大放电容量提高到435mAh/g，放电容量取得突破性的进展，但合金的贮氢机理尚不清楚。项目拟通过研究凝固条件、热处理和元素替代对LaMgNi4系贮氢合金微观组织结构、贮氢和电化学的影响，以及贮氢合金中AB2型、AB3型和A2B7型等多相协同效应，阐明LaMgNi4系合金不同晶粒形态、晶粒尺寸及多相协同效应对气态贮氢性能和电化学性能的作用机理，获得具有高放电容量、长寿命的新型RE-Mg基AB2型贮氢合金，为新型高性能贮氢合金的开发与应用提供可靠的理论依据。
英文摘要：
Hydrogen storage alloy；Elemental substitution；Rapid quenching；Activation property；Electrochemical performance
结论摘要：
La–Mg–Ni系贮氢合金具有理论容量高、活化性能好等一系列优点成为近期贮氢材料研究热点之一。在本项目中，应用真空感应熔炼及真空快淬工艺制备了一系列La–Mg–Ni系AB2型贮氢合金，测试了合金的相组成、微观结构以及吸放氢性能，研究了元素替换、退火处理以及快淬工艺对合金微观结构及吸放氢性能的影响。结果表明合金均具有良好的活化性能，不同的元素替换对合金的相结构及吸放氢性能有不同程度的影响。详细研究了合金容量的衰减机理，发现合金中的LaMgNi4相在吸放氢过程中发生氢致非晶化现象，从而使得合金的气态及电化学贮氢量逐渐下降。退火及快淬工艺对该系列合金的微观结构及吸放氢性能具有显著影响。快淬处理以及Ce替换La细化了合金的微观组织，从而提升了合金的电化学循环稳定性。本项目研究结果为该类合金的应用和发展提供了理论基础和技术指导。
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期刊论文
Influence of Melt Spinning on the Electrochemical Hydrogen Storage Kinetics of RE-Mg-Ni-Based A2B7-T
Comparative study of electrochemical performances of the as-melt Mg20Ni10-xMx (M = None, Cu, Co, Mn;
Structure and electrochemical hydrogen storage characteristics of La0.8-x Pr (x) Mg0.2Ni3.15Co0.2Al0
Effects of Rapid Quenching on Structure and Hydrogen Storage Characteristics of Mg20Ni10-xMnx (x=0-4
Impacts of melt spinning and Mn replacement on electrochemical hydrogen storage performances of nano
Electrochemical Characteristics of Melt Spun Nanocrystalline and Amorphous Mg20Ni 6M4 (M=Co, Cu) All
Electrochemical Performances of the As-melt La0.75-xMxMg0.25Ni3.2Co0.2Al0.1 (M =Pr, Zr; x =0, 0.2) A
Investigation of Electrochemical Hydrogen Storage Kinetics of Melt Spun Nanocrystalline and Amorphou
Electrochemical hydrogen-storage performance of Mg20-xYxNi10(x =0–4) alloys prepared by mechanical m
Structures and electrochemical hydrogen storage performance of Si added A(2)B(7)-type alloy electrod
An Investigation on Electrochemical Hydrogen Storage Performances of the As-cast and -Annealed La0.8
Gaseous and electrochemical hydrogen storage kinetics of as-quenched nanocrystalline and amorphous M
Electrochemical performances of as-cast and annealed La0.8-x Nd (x) Mg0.2Ni3.35Al0.1Si0.05 (x=0-0.4)
Electrochemical and Hydrogen Absorption/Desorption Properties of Nanocrystalline Mg2Ni-type Alloys P
Electrochemical hydrogen storage characteristics of as-cast and annealed La0.8-xNdxMg0.2Ni3.15Co0.2A
Electrochemical Hydrogen Storage Characteristics of the as-Cast and Annealed La0.8-xPrxMg0.2Ni3.35Al
Hydrogen storage kinetics of as-cast and spun (Mg24Ni10Cu2)100-xNdx (x = 0 – 20) alloysHydrogen stor
Structure andelectrochemical performances of Mg20–xYxNi10 (x = 0–4) alloys prepared by mechanicalmil
Electrochemical Performance of Nanocrystalline and Amorphous Mg–Nd–Ni–Cu-Based Mg2Ni-type Alloy Elec
An investigation on electrochemical and gaseous hydrogen storage performances of as-cast La1-xPrxMgN
Effect of Nd content on electrochemical performances of nanocrystalline and amorphous (Mg24Ni10Cu2)(
The electrochemical hydrogen storagecharacteristics of as-spun nanocrystalline and amorphous Mg20Ni1
Electrochemical characteristics ofnanocrystalline and amorphous Mg–Y–Ni-based Mg2Ni-type alloysprepa
The electrochemical hydrogen storageperformances of Si-added La–Mg–Ni–Co-based A2B7-typeelectrode al
Highly Improved Gaseous Hydrogen StorageCharacteristics of the Nanocrystalline and Amorphous Nd–Cu-a
Improved Hydrogen Storage Kinetics of Nanocrystalline and AmorphousMg–Nd–Ni-Cubased Mg2Ni-type Alloy
An investigation onelectrochemical and gaseous hydrogen storage performances of as-cast La1–xPrxMgNi
Structures andhydrogen storage properties of RE–Mg–Ni–Mnbased AB2-type alloysprepared by casting and
Electrochemical hydrogen storage behaviors ofthe nanocrystalline and amorphous Nd–Cu-added Mg2Ni-typ
Effects of stoichiometric ratio La/Mg onstructures and electrochemical performances of as-cast and a
添加Cu-Nd的Mg_2Ni型纳米晶和非晶合金的吸氢动力学性能(英文)Hydrogen storage kinetics of nanocrystallineand amorphous Cu–Nd-a
Structure andelectrochemical properties of LaMgNi4–xCox (x = 0–0.8) hydrogen storage electrode alloy
Influences ofhydrogen-induced amorphization and annealing treatment on gaseous hydrogenstorage prope
ElectrochemicalHydrogen Storage Performances of the Si Added La–Mg–Ni-based A2B7-typeElectrode Alloy
Hydrogen storage performances of LaMg11Ni + x wt% Ni (x = 100, 200) alloys prepared by mechanical mi
Highly improved electrochemical hydrogen storage performances of the Nd–Cu–added Mg2Ni-type alloys b
Hydrogen storage characteristics of the nanocrystalline and amorphous Mg-Nd-Ni-Cu-based alloys prepa
The electrochemical hydrogen storage characteristics of as-spun nanocrystalline and amorphous Mg20Ni
Hydrogen Storage Behaviour of Nanocrystalline and Amorphous Mg20Ni10-xCox (x=0~4) Alloys by Melt-Spi
The Electrochemical Hydrogen Storage Characteristics of La0.75-xZrxMg0.25Ni3.2Co0.2Al0.1 (x=0-0.2) A
Investigation on Gaseous and Electrochemical Hydrogen Storage Kinetics of As-Quenched Nanocrystallin
Gaseous and electrochemical hydrogen storage behaviors of nanocrystalline and amorphous Nd-added Mg2
Properties of Mechanically Milled Nanocrystalline and Amorphous Mg–Y–Ni Electrode Alloys for Ni–MH B
An investigation on electrochemical hydrogen storage performances of Mg-Y-Ni alloys prepared by mech
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