| Mg1-xTixNi(0≤x≤0.4)系列合金的合成及性能研究 |
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| 引用本文： | 袁华堂,宋赫男,李秋荻,冯艳,李志云,王一菁.Mg1-xTixNi(0≤x≤0.4)系列合金的合成及性能研究[J].高等学校化学学报,2003,24(4):584-587. |
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| 作者姓名： | 袁华堂 宋赫男 李秋荻 冯艳 李志云 王一菁 |
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| 作者单位： | 南开大学新能源材料化学研究所,南开大学·天津大学联合研究院,天津,300071 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家高技术研究发展计划(863计划)，天津市自然科学基金，南开大学校科研和教改项目，G2000026405，2001AA515022，013603211，，，，， |
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| 摘 要： | 采用机械合金化法成功制备了Mg1-xTixNi(0≤x≤0.4)系列三元合金.XRD结构分析表明,不同成分的合金在相同的球磨时间下非晶化程度有所区别,并且合金的非晶化程度随着球磨时间的增加而趋于完全.少量Ti的加入使得该系列合金的电化学性能及循环稳定性都有所提高.在球磨120h的该系列合金中,Mg0.9Ti0.1Ni合金的最大初始放电容量达到356.85mA·h·g-1(100mA·g-1,-0.5Vvs.Hg/HgO),而Mg0.7Ti0.3Ni合金的循环稳定性最好.Ti的加入亦提高了合金的抗腐蚀性能,使其腐蚀电位正移.
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| 关 键 词： | 镁基储氢合金 机械合金化法 非晶 电极 |
| 文章编号： | 0251-0790(2003)04-0584-04 |
| 收稿时间： | 2002-07-17 |
Studies on Preparation and Properties of Mg1-xTixNi(0≤x≤0.4) Alloys |
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| YUAN Hua Tang,SONG He Nan,LI Qiu Di,FENG Yan,LI Zhi Yun,WANG Yi Jing.Studies on Preparation and Properties of Mg1-xTixNi(0≤x≤0.4) Alloys[J].Chemical Research In Chinese Universities,2003,24(4):584-587. |
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| Authors: | YUAN Hua Tang SONG He Nan LI Qiu Di FENG Yan LI Zhi Yun WANG Yi Jing |
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| Institution: | Institute of New Energy Material Chemistry, Nankai University, Nankai University·Tianjin University United Academy, Tianjin 300071, China |
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| Abstract: | The Mg based hydrogen storage alloys Mg1- x Tix Ni(0≤ x ≤0.4) were successfully synthesized by mechanical alloying(MA). The X ray diffraction showed that the amorphous structures of the alloys were different from the diverse components and would be completed with increasing the ball milling time. It was found that the discharge capacity and the cycle life of the alloys were improved with Ti partial substitution. Among the alloys which were prepared by ball milling for 120 h, the discharge capacity of the Mg0.9 Ti0.1 Ni alloy electrode was 356.85 mA·h ·g-1 (100 mA·g-1, -0.5 V vs. Hg/HgO) in the first charge discharge cycle, and Mg 0.7 Ti 0.3 Ni showed the best cycle life. It was also found that the Ti partial substitution was more effective to improve the anti corrosion behavior. |
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| Keywords: | Mg based hydrogen storage alloys Mechanical alloying Amorphous state Electrode |
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