Stable High-Energy Density Super-Atom Clusters of Aluminum Hydride  

作　　者：Ke-yan Lian Yuan-fei Jiang De-hou Fei Wei Feng Ming-xing Jin Da-jun Ding Yi Luo 

机构地区：[1]Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China [2]Department of Theoretical Chemistry,Royal Institute of Technology,AlbaNova,S-106-91 Stockholm,Sweden [3]Hefei National Laboratory for Physical Sciences at the Microscale,University of Science and Tech-nology of China,Hefei 230025,China

出　　处：《Chinese Journal of Chemical Physics》2012年第2期147-152,I0003,共7页化学物理学报（英文）

基　　金：This work was supported by the Swedish Research Council, Swedish National Infrastructure for Computing, the National Natural Science Foundation of China （No.10534010 and No.20925311）, the Funda-mental Research Funds for the Central Universities （No.201103255）, and the China Scholarship Council.

摘　　要：With the concept of super-atom, first principles calculations propose a new type of super stable cage clusters AlnH3n that are much more energetic stable than the well established clusters, AlnHn＋2. In the new clusters, the aluminum core-frame acts as a super-atom with n vertexes and 2n A1-A1 edges, which allow to adsorb n hydrogen atoms at the top-site and 2n at the bridge-site. Using Al12H36 as the basic unit, stable chain structures, （Al12H36）m, have been constructed following the same connection mechanism as for （A1H3）n linear polymeric structures. Apart from high hydrogen percentage per molecule, calculations have shown that these new clusters possess large heat of formation values and their combustion heat is about 4.8 times of the methane, making them a promising high energy density material.

关 键 词：High-energy density Super-atom First principles Cluster of aluminum hydride 

分 类 号：O562.1[理学—原子与分子物理] TQ560.7[理学—物理]