Electronic structure of the complex hydride NaAlH4 -: art. no. 155103

被引:63
作者
Aguayo, A [1 ]
Singh, DJ [1 ]
机构
[1] USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA
来源
PHYSICAL REVIEW B | 2004年 / 69卷 / 15期
关键词
D O I
10.1103/PhysRevB.69.155103
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Density-functional calculations of the electronic structure of the complex hydride NaAlH4 and the reference systems NaH and AlH3 are reported. We find a substantially ionic electronic structure for NaAlH4, which emphasizes the importance of solid-state effects in this material. The relaxed hydrogen positions in NaAlH4 are in good agreement with the recent experiment. The electronic structure of AlH3 is also ionic. Implications for the binding of complex hydrides are discussed.
引用
收藏
页码:155103 / 1
页数:5
相关论文
共 37 条
  • [1] Phase changes and hydrogen release during decomposition of sodium alanates
    Balogh, MP
    Tibbetts, GG
    Pinkerton, FE
    Meisner, GP
    Olk, CH
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 350 (1-2) : 136 - 144
  • [2] Belskii V.K., 1982, ACTA CRYSTALLOGR B, V38, P1254
  • [3] Blaha P., 2001, COMPUTER CODE WIEN2K
  • [4] Ti-doped alkali metal aluminium hydrides as potential novel reversible hydrogen storage materials
    Bogdanovic, B
    Schwickardi, M
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 253 (1-2) : 1 - 9
  • [5] Investigation of hydrogen discharging and recharging processes of Ti-doped NaAlH4 by X-ray diffraction analysis (XRD) and solid-state NMR spectroscopy
    Bogdanovic, B
    Felderhoff, M
    Germann, M
    Härtel, M
    Pommerin, A
    Schüth, F
    Weidenthaler, C
    Zibrowius, B
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 350 (1-2) : 246 - 255
  • [6] Metal-doped sodium aluminium hydrides as potential new hydrogen storage materials
    Bogdanovic, B
    Brand, RA
    Marjanovic, A
    Schwickardi, M
    Tölle, J
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 302 (1-2) : 36 - 58
  • [7] Improved hydrogen storage properties of Ti-doped sodium alanate using titanium nanoparticles as doping agents
    Bogdanovic, B
    Felderhoff, M
    Kaskel, S
    Pommerin, A
    Schlichte, K
    Schüth, F
    [J]. ADVANCED MATERIALS, 2003, 15 (12) : 1012 - +
  • [8] The structure of Li3AlD6
    Brinks, HW
    Hauback, BC
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 354 (1-2) : 143 - 147
  • [9] ORIGIN OF FERROELECTRICITY IN PEROVSKITE OXIDES
    COHEN, RE
    [J]. NATURE, 1992, 358 (6382) : 136 - 138
  • [10] First principles investigations of complex hydrides AMH4 and A3MH6 (A = Li, Na, K, M = B, Al, Ga) as hydrogen storage systems
    de Dompablo, MEAY
    Ceder, G
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 364 (1-2) : 6 - 12