Storage of hydrogen in single-walled carbon nanotubes
Storage of hydrogen in single-walled carbon nanotubes
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DOI：
10.1038/386377a0
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发表时间：
1997-03-27
期刊：
影响因子：
64.8
通讯作者：
Heben, MJ
中科院分区：
文献类型：
--
作者：
Dillon, AC;Jones, KM;Heben, MJ
分子尺寸的孔可以吸附大量的气体，这是由于孔内吸附材料的密度增加（1），这是孔壁的吸引力的结果，Pederson和布劳顿提出（2）直径通常为几纳米的碳纳米管应该能够通过毛细作用抽吸液体，并且对于大直径多壁纳米管中的低表面张力液体已经看到了这种效应（3）。在这里，我们表明，气体可以冷凝到狭窄的单壁纳米管（SWNTs）内的高密度，程序升温脱附光谱显示，氢将冷凝在SWNTs内的条件下，不诱导吸附在标准的中孔活性炭，在这些材料中非常高的氢吸收表明，它们可能是有效的燃料电池电动汽车的储氢材料。
Pores of molecular dimensions can adsorb large quantities of gases owing to the enhanced density of the adsorbed material inside the pores(1), a consequence of the attractive potential of the pore walls, Pederson and Broughton have suggested(2) that carbon nanotubes, which have diameters of typically a few nanometres, should be able to draw up liquids by capillarity, and this effect has been seen for low-surface-tension liquids in large-diameter, multi-walled nanotubes(3). Here we show that a gas can condense to high density inside narrow, single-walled nanotubes (SWNTs), Temperature-programmed desorption spectrosocopy shows that hydrogen will condense inside SWNTs under conditions that do not induce adsorption within a standard mesoporous activated carbon, The very high hydrogen uptake in these materials suggests that they might be effective as a hydrogen-storage material for fuel-cell electric vehicles.