One-step uniform growth of magnesium hydride nanoparticles on graphene

作     者：Yuqin Huang Guanglin Xia Jie Chen Baoping Zhang Qian Li Xuebin Yu 

作者机构：Department of Materials Science Fudan University State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering Shanghai University Materials Genome Institute Shanghai University 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2017年第27卷第1期

页      面：81-87页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：partially sponsored by the National Natural Science Foundation of China (21271046  51471053  51625102) 

主　　题：Hydrogen storage Magnesium hydride Graphene Nanoparticles Nanocomposite 

摘      要：A simple solvent-free method to synthesize MgH;nanoparticles（MgH;NPs） uniformly grown on graphene nanosheets（GNs） has been reported in this paper. Based on the formation of MgH;by di-n-butylmagnesium(（C;H;）;Mg) thermal decomposition under hydrogen pressure, the GNs were added as matrix to hinder the agglomeration and growing of MgH;NPs. The fabricated MgH;/GNs nanocomposites, in which MgH;NPs were homogenously growing in the graphene matrix, have been synthesized by the favorable adsorption energy between（C;H;）;Mg and GNs. Resulting from the one-step solvent-free route, the generated MgH;NPs shows high hydrogen capacity and steady hydriding and dehydriding properties, without the interference of the synthetic medium. At the same time, the size of the fabricated MgH;NPs can be controlled by adjusting the mass ratio of MgH;to graphene, the various hydrogen pressure and temperature. Attributed to smaller size effect, well uniform distribution of high density MgH;NPs, and the agglomeration blocking ability of graphene,the MgH;/GNs-40 wt% exhibits the favorite hydrogen storage performance.