利用氢化燃烧合成法制备了镁基储氢合金Mg-Mg2Ni,分析了镁镍配比和镁粉粒径对HCS产物组成和储氢性能的影响.研究结果表明,HCS产物主要由Mg2Ni及Mg的氢化物MgH2、Mg2NiH4和Mg2NiH0.3组成,没有Ni相的存在,当Mg:Ni＞2:1时,较粗镁粉原料的使用对燃烧合成产物Mg2Ni的氢化活性影响不大,但会降低反应剩余Mg的氢化活性.随原料中镁镍配比的增加,HCS产物中MgH2的相对含量逐渐增加,HCS产物的氢化动力学性能逐渐降低,吸氢量却先增加后降低,Mg:Ni=7.85:1时具有最大的吸氢量4.87wt.%,同时由较细镁粉得到的HCS产物的氢化速率和吸氢量大于较粗镁粉,但两者之间的差别会随镁镍配比的降低而减小.
参考文献
| [1] | 巴志新,柳东明,李李泉.镁基储氢合金制备方法[J].新技术新工艺,2004(03):45-47. |
| [2] | LI Li-quan;Akiyama T;Yagi J .Production of hydrogen storage alloys of Mg2 NiH4 by hydriding combustion synthesis in laboratory scale[J].Journal of Materials Synthesis and Processing,2000,8:7-14. |
| [3] | Liquan Li;Tomohiro Akiyama;Jun-ichiro Yagi .Activity and capacity of hydrogen storage alloy Mg_2NiH_4 produced by hydriding combustion synthesis[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2001(1/2):118-123. |
| [4] | Akiyama T;Negishi T;Saito K et al.Operating conditions of hydriding combustion synthesis of pure Mg2NiH4[J].Materials Transactions,2001,42(08):1748-1752. |
| [5] | 胡子龙.贮氢材料[M].北京:化学工业出版社,2002:223-226. |
| [6] | Qian Li;Kuo-Chih Chou;Qin Lin;Li-Jun Jiang;Feng Zhan .Hydrogen absorption and desorption kinetics of Ag-Mg-Ni alloys[J].International journal of hydrogen energy,2004(8):843-849. |
| [7] | 巴志新,柳东明,李李泉.镁的氢化反应对氢化燃烧合成储氢合金Mg2NiH4纯度的影响[J].材料科学与工程学报,2004(04):539-543. |
| [8] | LI Li-quan;Akiyama T;Yagi J .Reaction mechanism of hydriding combustion synthesis of Mg2NiH4[J].Journal of Alloys and Compounds,2001,316:118-123. |
| [9] | 柳东明,韦涛,李李泉.氢化燃烧合成法制备Mg-Mg2Ni储氢合金氢化物[J].功能材料,2004(z1):1941-1943. |
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