| 低温球磨制备Mg-4%Ni-1%NiO储氢材料及其性能 |
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| 引用本文： | 李平,王腾,范丽珍,DIN Rafi-ud,曲选辉.低温球磨制备Mg-4%Ni-1%NiO储氢材料及其性能[J].北京科技大学学报,2011(7):846-851. |
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| 作者姓名： | 李平 王腾 范丽珍 DIN Rafi-ud 曲选辉 |
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| 作者单位： | 北京科技大学材料科学与工程学院;巴基斯坦核科学与技术研究所化学部; |
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| 基金项目： | 国家高技术研究发展计划资助项目(No.2006AA05Z132); 教育部长江学者和创新团队发展计划资助项目(No.I2P407) |
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| 摘 要： | 采用低温球磨技术制备了Mg-4%Ni-1%NiO储氢材料,主要研究低温球磨时间对材料形貌结构以及储氢性能的影响.采用扫描电子显微镜(SEM)和X射线衍射(XRD)分析材料的形貌和相组成,采用压力-组成-温度(P-C-T)设备研究材料的储氢性能.结果表明:分别经过2、4和7 h球磨后,材料的相组成没有发生明显改变,只有极少量的Mg2Ni合金相生成.随着球磨时间的延长,材料的平均粒度逐渐下降,作为催化剂的Ni、NiO相逐渐揉进基体内部.伴随着上述变化,材料的活化性能、吸氢性能逐渐提高,球磨到7 h后材料仅需活化1次即可达到最大吸放氢速率,初始吸氢温度降为60℃,在4.0 MPa初始氢压和200℃下吸氢量为6.4%(质量分数),60s即可完成饱和吸氢量的80%,10min内完成饱和吸氢量的90%;材料的放氢性能则在球磨4 h后已经基本保持不变,0.1MPa下初始放氢温度为310℃,在350℃、0.1MPa下材料可在500s内释放饱和储氢量的80%.
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| 关 键 词： | 储氢材料 镁 低温球磨 储氢性能 |
Preparation and performance of Mg-4%Ni-1%NiO hydrogen storage materials by cryomilling |
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| LI Ping,WANG Teng,FAN Li-zhen,DIN Rafi-ud,QU Xuan-hui School of Materials Science , Engineering,University of Science , Technology Beijing,Beijing ,China Chemistry Division,Pakistan Institute of Nuclear Science , Technology,Nilore Islamabad,Pakistan.Preparation and performance of Mg-4%Ni-1%NiO hydrogen storage materials by cryomilling[J].Journal of University of Science and Technology Beijing,2011(7):846-851. |
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| Authors: | LI Ping WANG Teng FAN Li-zhen DIN Rafi-ud QU Xuan-hui School of Materials Science Engineering University of Science Technology Beijing Beijing China Chemistry Division Pakistan Institute of Nuclear Science Technology Nilore Islamabad Pakistan |
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| Institution: | LI Ping1),WANG Teng1),FAN Li-zhen1),DIN Rafi-ud1,2),QU Xuan-hui1) 1) School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China 2) Chemistry Division,Pakistan Institute of Nuclear Science and Technology,Nilore Islamabad,Pakistan |
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| Abstract: | A novel material Mg-4%Ni-1%NiO for hydrogen storage applications was fabricated by mechanical milling at cryogenic temperature(cryomilling).The effects of ball milling time on the structure morphology and the hydrogen storage performance of the newly developed materials were investigated at cryogenic temperature.The phase structure and surface morphology were analyzed by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The hydrogenation and dehydrogenation characteristics were studied by a press... |
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| Keywords: | hydrogen storage materials magnesium cryomilling hydrogen storage property |
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