添加钕对Mg2Ni储氢合金的结构和电极性能的影响

稀有金属, 2004, 28(1): 108-111. doi: 10.3969/j.issn.0258-7076.2004.01.028

添加钕对Mg2Ni储氢合金的结构和电极性能的影响

王仲民 ^1, , 周怀营 ^2, , 顾正飞 ^3, , 成钢 ^4, , 成钧 ^5,

1.桂林电子工业学院材料科学与工程中心,广西,桂林,541004

2.桂林电子工业学院材料科学与工程中心,广西,桂林,541004

3.桂林电子工业学院材料科学与工程中心,广西,桂林,541004

4.桂林电子工业学院材料科学与工程中心,广西,桂林,541004

5.桂林电子工业学院材料科学与工程中心,广西,桂林,541004

基金项目: 广西自然科学基金(0135053) 国家自然科学基金(50171024)

关键词： Mg2-xNdxNi , 球磨 , 放电容量 , NdMgNi4

Effects of the Addition of Neodymium on Microstructure and Electrochemical Characteristics of Mg2Ni-Based Hydrogen Storage Alloys

利用两步法制备了一系列添加Nd的三元Mg2-xNdxNi合金. XRD分析证实, 当x＝0.05, 0.1时, 制得的三元Mg2-xNdxNi合金均为Mg2Ni单相合金; 三元Mg1.8Nd0.2Ni(x=0.2, 0.3)合金为三相合金, 三相分别为Mg2Ni, NdNi, NdMgNi4. 模拟电池测试结果表明, 同Mg2Ni合金相比, 球磨10 h的三元Mg1.8Nd0.2Ni合金和Mg1.7Nd03Ni合金电极的放电容量提高明显, 且Mg1.7Nd03Ni合金电极的循环性能有明显改善. 这极有可能与合金中NdMgNi4相的存在以及球磨形成的微结构有关.

参考文献

[1]	房文斌,张文丛,于振兴,王尔德.镁基储氢材料的研究进展[J].中国有色金属学报,2002(05):853-862.
[2]	胡子龙.储氢材料[M].北京:机械工业出版社,2002
[3]	Zhu Min;Wang Zhongmin;Peng Chenghong et al.The effect of grain refining onThe discharge capacity of Mg2Ni/MmNi5-x(CoAlMn)x composite prepared by mechanical alloying[J].Journal of Alloys and Compounds,2003,349:284.
[4]	李法兵,蒋利军,郑强,詹锋.机械合金化法制备镁基储氢材料进展[J].稀有金属,2003(06):823-826.
[5]	Tsushio Y;Enoki H;Akiba E.Energy distribution of hydrogen sites for MgNi0.86M1(M1=Cr,Fe,Co,Mn) alloys desorbing hydrogen at low temperature[J].Journal of Alloys and Compounds,1999(285):298.
[6]	WANG RONG;Yan Jie;Zhou Zhen et al.Degradation and recovery of AB5-type hydrogen storage alloys used in Ni/MH batteries[J].中国稀土学报,2002,20(02):138.
[7]	金学平,吴俊,黄清安,莫少波,杨业智.含稀土的镍基合金的析氢电催化行为[J].中国稀土学报,2001(03):243-246.
[8]	Ling G;Huot J.Hydrogen storage properties of nanocrystalline Mg1.9Ti0.1Ni made by mechanial alloying[J].Journal of Alloys and Compounds,1999(282):286.
[9]	Liu Yongning.Effect of lanthanum additions on electrode properties of Mg2Ni[J].Journal of Alloys and Compounds,1998(267):231.
[10]	Wang Zhongmin;Zhou Huaiying;Gu Zhenfei.Preparation and structure of ternary Mg2-xRExNi(where RE=La,Ce,Pr,Nd,Y)alloys[J].稀有金属材料与工程,2003
[11]	王仲民,曾美琴,杨永强,李伯林,朱敏.机械合金化对Mg2Ni相形成的影响[J].中国有色金属学报,2001(02):236-239.
[12]	Liu Weihong;Wu Haoqing;Lei Yongquan et al.Amorphization and electrochemical hydrogen storage properties of mechanically alloyed Mg-Ni[J].Journal of Alloys and Compounds,1997,252:234.
[13]	王仲民;周怀营;成钢.REMgNi4(RE= La,Ce,Pr,Nd,Y)合金化合物的制备研究[J].中国有色金属学报,2003(01)
[14]	Orimo S;Fujii H .Notable hydriding properties of a nanostructured composite material of the Mg2Ni-H system synthesized by reactive mechanical grinding[J].Acta Materialia,1998,45(01):331.
[15]	Zhu Min;Wang Zhongmin;Peng Chenghong et al.The effect of grain refining onThe discharge capacity of Mg2Ni/MmNi5-x(CoAlMn)x composite prepared by mechanical alloying[J].Journal of Alloys and Compounds,2003,349:284.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网