| 低温球磨制备镁基储氢材料及其性能研究 |
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| 引用本文： | 熊 伟,李 平,谢东辉,郑雪萍,曾彩霞,曲选辉.低温球磨制备镁基储氢材料及其性能研究[J].稀有金属材料与工程,2009,38(2):365-367. |
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| 作者姓名： | 熊 伟 李 平 谢东辉 郑雪萍 曾彩霞 曲选辉 |
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| 作者单位： | 北京科技大学新能源材料与技术北京市重点实验室,北京,100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，教育部长江学者和创新团队发展计划 |
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| 摘 要： | 用液氮低温球磨技术制备Mg-8 mol%LaNi0.5储氢材料.采用XRD和SEM研究材料的相结构和表面形貌,采用激光法测定粒度分布,采用PCT设备研究材料的储氢性能.结果表明:经过10 h球磨后,该材料有少量合金相生成:材料平均粒度为10um左右;材料具有平坦的吸放氢平台,吸氢量在573 K时为2.33%(质量分数);在4.0 MPa氢压和523～653 K条件下,3～5 min内完成饱和吸氢量的80%以上.低温球磨制备的材料活化性能好,不需活化,平台性能好,动力学性能得到改善.
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| 关 键 词： | 镁基储氢材料 低温球磨 储氢性能 动力学性能 |
| 收稿时间： | 2008/1/23 0:00:00 |
Preparation and Performance of Mg-Based Hydrogen Storage Materials by Cryomilling |
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| Xiong Wei,Li Ping,Xie Donghui,Zheng Xueping,Zeng Caixia and Qu Xuanhui.Preparation and Performance of Mg-Based Hydrogen Storage Materials by Cryomilling[J].Rare Metal Materials and Engineering,2009,38(2):365-367. |
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| Authors: | Xiong Wei Li Ping Xie Donghui Zheng Xueping Zeng Caixia and Qu Xuanhui |
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| Affiliation: | Key Lab of New Energy Materials and Technologies;University of Science and Technology;Beijing 100083;China |
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| Abstract: | The Mg-8 mol% LaNi0.5 hydrogen storage materials were prepared by mechanically milling at cryogenic temperature (cryomilling). The phase structure and surface morphology of the materials were studied by XRD and SEM, the granularity distribution was determined by laser method, the hydrogen storage performance of the materials were studied by an equipment of PCT (pressure-composition-Temperature). The results showed that a small amount of the alloy phase appeared after ten hours. The average particle size of ... |
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| Keywords: | Mg-based hydrogen storage materials cryomilling hydrogen storage performance dynamic performance |
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