Metal-nanocluster-filled carbon nanotubes: Catalytic properties and possible applications in electrochemical energy storage and production
Metal-nanocluster-filled carbon nanotubes: Catalytic properties and possible applications in electrochemical energy storage and production
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DOI：
10.1021/la980663i
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发表时间：
1999-02-02
期刊：
影响因子：
3.9
通讯作者：
Fisher, ER
中科院分区：
文献类型：
--
作者：
Che, GL;Lakshmi, BB;Fisher, ER
通过模板法制备了高度定向、单分散的石墨化碳纳米管，采用化学气相沉积法在氧化铝膜孔内沉积碳。已经制备了直径为200 nm的管子，并且可以实现更小的直径。用这种模板法制备了自支撑的定向碳管膜。这些新型的碳管膜可以填充纳米的电催化材料(即铂、Ru、铂/Ru)，然后将其用于电催化O2还原和甲醇氧化以及碳氢化合物的气相催化。因此，这些膜在燃料电池开发中具有潜在的应用前景。使用纳米铁作为催化剂，也可以在模板合成的碳管中制备更小、高度有序的石墨-碳管。在这些新颖的管中管结构中，外管和内管都对Li+的嵌入具有电化学活性，这意味着可能的应用，如锂离子电池阳极。
Ensembles of highly aligned and monodisperse graphitic carbon nanotubules have been prepared via the template method using chemical vapor deposition of carbon within the pores of alumina membranes. Tubules with diameters of 200 nm have been prepared, and smaller diameters are possible. Free-standing aligned carbon-tubule membranes are formed by this template method. These novel carbon tubule membranes can be filled with nanoparticles of electrocatalytic materials (i.e., Pt, Ru, Pt/Ru), which can then be used to electrocatalyze O-2 reduction and methanol oxidation as well as the gas-phase catalysis of hydrocarbons. Hence, these membranes have potential applications in fuel cell development. Smaller, highly ordered graphitic-carbon tubules can also be prepared within the template-synthesized carbon tubules, using Fe nanoparticles as catalysts. In these novel tube-in-tube structures, both the outer and the inner tubules are electrochemically active for Li+ intercalation, suggesting possible applications such as Li ion battery anodes.