| 氢化燃烧合成与机械合金化复合制备LaMg_(11.5)Ni_(0.5)储氢材料 |
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| 引用本文： | 顾昊,朱云峰,李李泉. 氢化燃烧合成与机械合金化复合制备LaMg_(11.5)Ni_(0.5)储氢材料[J]. 粉末冶金技术, 2009, 27(2) |
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| 作者姓名： | 顾昊 朱云峰 李李泉 |
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| 作者单位： | 南京工业大学材料科学与工程学院,南京,210009 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，江苏省高技术研究重大项目，南京工业大学博士学位论文创新基金 |
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| 摘 要： | 采用氢化燃烧合成和机械球磨复合制备了LaMg11.5Ni0.5三元储氢材料,物相分析可知,该体系由MgH2、Mg、Mg2NiH4,Mg2NiH0.3,LaH2以及少量LaNi5H0.3构成.氢化燃烧合成产物LaMg11.5Ni0.5经20h球磨后,在423K时,100s内达到饱和吸氢量3.42%(质量分数);在523K时,1 800s内放氢基本完全,放氢量为3.29%(质量分数).研究表明,该产物在523K时的放氢过程受界面移动过程控制.
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| 关 键 词： | 储氢材料 氢化燃烧合成 机械球磨 储氢性能 稀土 |
Hydrogen storage material of LaMg_(11.5)Ni_(0.5) prepared by hydriding combustion synthesis followed by mechanical milling |
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| Gu Hao,Zhu Yunfeng,Li Liquan. Hydrogen storage material of LaMg_(11.5)Ni_(0.5) prepared by hydriding combustion synthesis followed by mechanical milling[J]. Powder Metallurgy Technology, 2009, 27(2) |
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| Authors: | Gu Hao Zhu Yunfeng Li Liquan |
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| Affiliation: | College of Materials Science and Engineering;Nanjing University of Technology;Nanjing 210009;China |
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| Abstract: | In this paper,LaMg11.5Ni0.5 ternary hydrogen storage materials were prepared by hydriding combustion synthesis combined with mechanical milling (HCS+MM). The product consists of MgH2,Mg,Mg2NiH4,Mg2NiH0.3,LaH2 and a little LaNi5H0.3. When the product of hydriding combustion synthesis is milled for 20h,it absorbs hydrogen with absorption capacity of 3.42% at 423K in 100 s,and desorption capacity of 3.29% at 523K in 1 800s. Results show that the hydrogen desorption at 523K is controlled by phase boundary react... |
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| Keywords: | hydrogen storage material hydriding combustion synthesis mechanical milling hydrogen storage properties rare earths |
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