Diameter-control in synthesis of carbon nanotubes inside porous stainless steel block and application to glucose fuel cell electrode
Diameter-control in synthesis of carbon nanotubes inside porous stainless steel block and application to glucose fuel cell electrode
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DOI：
10.1016/j.carbon.2016.02.071
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发表时间：
2016-07
期刊：
影响因子：
10.9
通讯作者：
N. Sano;Kosuke Nojima;T. Kodama;H. Tamon
中科院分区：
文献类型：
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作者：
N. Sano;Kosuke Nojima;T. Kodama;H. Tamon
通过加入乙醇或甲醇作为碳源，可以在多孔不锈钢块的内表面上合成碳纳米管（CNT）。与通过供给乙烯在多孔不锈钢块中生长传统的碳纳米管相比，在使用醇的新开发条件下碳纳米管的直径明显更小。在这些条件下，在拉曼光谱中观察到径向呼吸模式，表明单壁碳纳米管的存在。当在内表面直接生长碳纳米管的多孔不锈钢块用作葡萄糖燃料电池的阳极时，使用乙醇或甲醇的新碳纳米管生长条件的发电量可以比使用乙烯的传统条件提高约三倍。与这里使用的两种醇相比，使用由甲醇合成的碳纳米管作为阳极的燃料电池可以表现出比乙醇高10%的功率。根据拉曼位移分析和TEM观察，碳纳米管的表面积和结晶度似乎是实现高发电性能的关键因素。
Carbon nanotubes (CNTs) can be synthesized on inner surface of a porous stainless steel block by feeding ethanol or methanol as carbon source. In comparison with a conventional CNT growth in the porous stainless steel block by feeding ethylene, the diameter of CNTs in the newly-developed conditions using the alcohols are significantly smaller. In these conditions, a radial breathing mode were observed in Raman spectra, indicating the presence of single-walled carbon nanotubes. When the porous stainless steel block including CNTs directly grown on its inner surface is used for an anode in a glucose fuel cell, its power generation using the new CNT growth condition with ethanol or methanol can be improved by approximately three times higher than using the conventional condition with ethylene. Compared with the two alcohols used here, the fuel cell using the anode with the CNTs synthesized from methanol can exhibit 10% higher power than that from ethanol. According to Raman shift analysis and TEM observation, the surface area and the crystallinity of CNTs seem to be the key factors to realize the high electric generation performance.