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钴修饰氮化铝纳米管的储氢性能
Hydrogen storage of Co-decorated AlN nanotube
【摘要】 本文采用密度泛函理论中的广义梯度近似系统地研究了钴原子修饰的(5,5)单壁氮化铝纳米管(SWANNT)的几何结构、电子性质以及储氢性能.研究结果表明:钴原子倾向于以顶位的形式吸附于(5,5) SWANNT表面N原子上.在钴原子周围可以吸附4个完整的H分子,平均吸附能为0.624 e V,表明钴原子修饰的SWANNT材料有望在温和环境中实现对H分子的快速吸附和脱附.
【Abstract】 A comprehensive density functional theory(DFT) study of the geometric structures,electronic properties,and hydrogen storage properties on Co-decorated(5,5) single-walled aluminum nitride nanotube(SWANNT) was carried out.The results show that Co atom prefers to bind on the top of N atom at the surface of(5,5) SWANNT.Co atom can adsorb up to four H2 molecules with an average adsorption energy of 0.624 eV,which indicates that Co-decorated SWANNT is expected to rapidly adsorb and desorb H2 molecules under the condition of moderate temperature and pressure.
- 【文献出处】 原子与分子物理学报 ,Journal of Atomic and Molecular Physics , 编辑部邮箱 ,2021年04期
- 【分类号】TQ133.1;TB383.1
- 【被引频次】1
- 【下载频次】117