| CeO2基固溶体对Mg2Ni合金储氢动力学性能的影响研究 |
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| 引用本文： | 张国芳,张羊换,刘卓承,许剑轶,张胤.CeO2基固溶体对Mg2Ni合金储氢动力学性能的影响研究[J].无机材料学报,2014,29(12):1241-1245. |
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| 作者姓名： | 张国芳 张羊换 刘卓承 许剑轶 张胤 |
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| 作者单位： | (内蒙古科技大学 1. 材料与冶金学院; 2. 内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室 包头 014010) |
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| 基金项目： | 国家自然科学基金(51161015, 51371094);内蒙古自然科学基金(2013MS0806, 2011ZD10);内蒙古科技大学创新基金(2012NCL043) |
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| 摘 要： | 采用水热法合成纳米Ce1-x(Eu0.5La0.5)xO2及Ce1-x(Fe0.5La0.5)xO2固溶体, 通过结构及光谱性能分析表征了掺杂效应。与纯CeO2--相比, CeO2基固溶体的晶胞参数变大, 紫外漫反射的吸收边发生移动, 拉曼光谱的F2g特征振动峰向低波数方向移动。将掺杂固溶体作为添加剂与Mg2Ni合金混合进行球磨处理, 对得到的复合材料进行结构及储氢动力学表征。XRD结果表明, 复合材料的纳米晶比例升高。储氢动力学测试结果表明, 固溶体添加剂使材料表面反应的可逆程度得到优化, Mg2Ni合金体内的氢原子扩散速率及氢扩散系数也得到了提高。
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| 关 键 词： | 掺杂CeO2基固溶体 Mg2Ni 球磨 储氢性能 |
| 收稿时间： | 2014-03-10 |
| 修稿时间： | 2014-05-10 |
Effect of CeO2-based Solid Solutions on Hydrogen Storage Kinetic Properties of Mg2Ni Alloy |
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| ZHANG Guo-Fang,ZHANG Yang-Huan,LIU Zhuo-Cheng,XU Jian-Yi,ZHANG Yin.Effect of CeO2-based Solid Solutions on Hydrogen Storage Kinetic Properties of Mg2Ni Alloy[J].Journal of Inorganic Materials,2014,29(12):1241-1245. |
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| Authors: | ZHANG Guo-Fang ZHANG Yang-Huan LIU Zhuo-Cheng XU Jian-Yi ZHANG Yin |
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| Affiliation: | (1. School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China; 2. Key Laboratory of Intergrate Exploiation of Bayan Obo Multi-metal Resources, Inner Mongolia University of Science and Tech-nology, Baotou 014010, China) |
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| Abstract: | Nanosized Ce1-x(Eu0.5La0.5)xO2 and Ce1-x(Fe0.5La0.5)xO2 solid solutions were synthesized via hydrothermal method, and the doping effect was characterized by analyzing the structure and spectrum features of the solid solutions. The results showed that the cell parameters of the solid solutions increased, the absorption edge of the UV diffuse reflectance spectroscopy was drifted, and the characteristic Raman F2g vibration peak shifted to lower wave numbers. Then the mixtures of Mg2Ni alloy powders and the solid solution additives were ball-milled to obtain composites. XRD results showed that the fraction of amorphous and nanocrystalline in the as-prepared composites was increased. The hydrogen storage kinetic measurements demonstrated that surface activity and degree of reversibility of the composites was optimized, and the diffusion rate and diffusion coefficient of hydrogen atoms in the bulk of Mg2Ni were increased. |
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| Keywords: | doped CeO2-based solid solutions Mg2Ni ball-milled hydrogen storage properties |
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