| La2Ca2Mg2Ni13-xCox贮氢合金的相结构和电化学性能 |
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| 引用本文： | 方春恒,王常春,柳东明,张庆安.La2Ca2Mg2Ni13-xCox贮氢合金的相结构和电化学性能[J].安徽工业大学学报,2009,26(2):138-141. |
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| 作者姓名： | 方春恒 王常春 柳东明 张庆安 |
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| 作者单位： | 安徽工业大学,材料科学与工程学院,安徽,马鞍山,243002
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| 摘 要： | 研究元素Co部分替代Ni对La2Ca2Mg2Ni13合金相结构和电化学性能的影响。结果表明，La2Ca2Mg2Ni13-xCox（x=0，0．25，0．5，0．75和1．0）系列合金主要由PuNi3型结构的（La，Ca，Mg）（Ni，Co），相和CaCu5型结构的（La，Ca）（Ni，Co），相组成，随合金中Co替代量x的增加，PuNi3型主相的含量先增加后降低。当x=0．75时，合金具有最高的放电容量360mA·h/g，并具有较好的循环稳定性。
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| 关 键 词： | 贮氢合金 相结构 放电容量 循环稳定性 |
Phase Structure and Electrochemical Property of La_2Ca_2Mg_2Ni_(13-x)Co_x Hydrogen Storage Alloys |
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| FANG Chun-heng,WANG Chang-chun,LIU Dong-ming,ZHANG Qing-an.Phase Structure and Electrochemical Property of La_2Ca_2Mg_2Ni_(13-x)Co_x Hydrogen Storage Alloys[J].Journal of Anhui University of Technology,2009,26(2):138-141. |
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| Authors: | FANG Chun-heng WANG Chang-chun LIU Dong-ming ZHANG Qing-an |
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| Affiliation: | School of Materials Science and Engineering;Anhui University of Technology;Ma'anshan 243002;China |
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| Abstract: | The effect of partial substitution for Ni by Co on the phase structure and electrochemical property of La2Ca2Mg2Ni13 alloy was investigated.The results indicated that the La2Ca2Mg2Ni13-xCox(x=0,0.25,0.5,0.75,1.0) alloys are mainly composed of(La,Ca,Mg)(Ni,Co)3 phase with a PuNi3-type structure and(La,Ca)(Ni,Co)5 phase with a CaCu5-type structure.With the increase of Co content,the phase abundance of PuNi3-type increased firstly and then decreased.When x=0.75,the alloy has maximum discharge capacity of 360 m... |
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| Keywords: | Hydrogen storage alloy phase structure discharge capacity cycle stability |
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