摘要
结合Mg—C纳米晶复合储氢材料的研究，对目前大容量镁基储氢材料研究结果进行了分析，指出用机械合金化法制备Mg纳米晶可提高其储氢密度、改善其动力学性能，但材料放氢温度一般较高。作者课题组将碳微晶与Mg复合，并引入金属催化剂，以降低MgH2分解温度。差热扫描量热分析（DSC）表明Mg—C纳米晶复合储氢材料的初始放氢温度为201～240℃，降低了60-90℃，其热力学性能得到了较大的改善。
The research advance of high capacity Mg-based hydrogen-storage materials was reviewed. The mechanical alloying can improve the hydrngen-storage capacity and dynamic performance of Mg nano-crystal materials,but the dehydriding temperature was rather high generally. In order to decrease the dehydriding temperature of MgH2, carbon and metallic catalyzer were introduce into Mg metal. According to DSC analysis, the initial dehydriding temperature of the Mg-C nano-crystal composites is only 201 -240℃, which is reduced by 60 - 90℃, and therefore the thermodynamic performance is improved distinctly.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2007年第4期65-67,74,共4页
Modern Chemical Industry
基金
国家自然科学基金项目(50574054)
教育部留学回国人员科研基金项目(2005-383)
关键词
储氢
复合材料
镁
纳米晶
hydrogen storage
composite
magnesium
nano-crystal
