MgH_2/PMMA复合储氢材料的制备及其脱氢研究  

Preparation and dehydrogenation performance of MgH_2/PMMA composites

作　　者：李志宝 孙立贤[1,2] 徐芬[2] 褚海亮 周怀营[2] 

机构地区：[1]大连化学物理研究所,辽宁大连116023 [2]桂林电子科技大学材料科学与工程学院广西新能源材料结构与性能协同创新中心广西电子信息材料构效关系重点实验室,广西桂林541004

出　　处：《电源技术》2015年第8期1668-1670,1693,共4页Chinese Journal of Power Sources

基　　金："973"资助(2010CB631303);国家自然科学基金(21173111;51371060;51361005);北京理工大学开放课题资助(KFJJ13-12M)

摘　　要：利用固相球磨和液相超声的方法合成了Mg H2/PMMA(聚甲基丙烯酸甲酯)复合储氢材料。利用扫描电镜(SEM)和X射线衍射(XRD)对其表面形貌及晶体结构进行了表征。77 K氮气吸附实验表明Mg H2/PMMA复合材料的比表面积随着PMMA复合量的增加而降低。通过热重分析(TG)对Mg H2/PMMA复合材料的脱氢过程进行了表征,结果显示复合材料的脱氢性能得到了提高,起始脱氢温度由420℃降低到120℃。利用热重-质谱(TG-MS)联用技术,对复合材料的脱氢产物进行了表征。MgH2/PMMA （polymethyl methacrylate） hydrogen storage composites were successfully synthesized by means of solid state ball-milling and liquid ultrasonic technique. The surface morphology and crystal structure were characterized by using SEM and XRD. N2 adsorption experiments at 77 K show that the BET special surface area of the MgHJPMMA composites decreases with the increase of compositing proportion of PMMA.TG results demonstrate the dehydrogenation performance of the MgHJPMMA composites improves, as its onset dehydrogenation temperature is reduced from 420 ℃ to 120 ℃. The dehydrogenation products of the composites were analyzed by TG-MS combined technique.

关 键 词：MgH2/PMMA复合材料 表面形貌 脱氢性能 

分 类 号：TM911[电气工程—电力电子与电力传动]