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首页> 外文期刊>International journal of hydrogen energy >Investigation of single-walled carbon nanotubes-titanium metal composite as a possible hydrogen storage medium
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Investigation of single-walled carbon nanotubes-titanium metal composite as a possible hydrogen storage medium

机译：单壁碳纳米管-钛金属复合材料可能作为储氢介质的研究

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摘要

The present experimental work deals with the investigation of hydrogen uptake study of single-walled carbon nanotubes (SWCNTs-Ti)-titanium metal composite. The mixture containing SWCNTs and Ti powder is made into tablet by cold pressing. The composite has been prepared and hydrogenated by evaporating the tablet in hydrogen ambient on glass substrates using electron beam (EB) evaporation technique. Efficient hydrogen uptake of 4.74 wt.% is achieved with the composite and the adsorbed hydrogen posses the average hydrogen binding energy of 0.4 eV. The obtained hydrogen uptake is due to the cumulative adsorption of hydrogen by CNTs and Ti nanostructured materials. The physical properties are characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray diffraction study (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and Raman analysis. Hydrogenation and dehydrogenation behavior of the composite are studied using CHN-elemental analysis and thermo gravimetric/thermal desorption spectroscopy (TG/TDS) studies, respectively. The stored hydrogen is found to be 100% reversible in the temperature range of 160-310 ℃.
机译：目前的实验工作涉及对单壁碳纳米管（SWCNTs-Ti）-钛金属复合材料的氢吸收研究。通过冷压将含有SWCNT和Ti粉末的混合物制成片剂。通过使用电子束（EB）蒸发技术在玻璃基板上的氢气环境中蒸发片剂，可以制备并氢化复合材料。该复合物有效吸收了4.74重量％的氢，并且所吸附的氢具有0.4eV的平均氢结合能。所获得的氢吸收是由于CNT和Ti纳米结构材料对氢的累积吸附。物理特性的特征在于透射电子显微镜（TEM），原子力显微镜（AFM），X射线衍射研究（XRD），扫描电子显微镜（SEM），能量色散X射线光谱（EDS）和拉曼分析。分别使用CHN元素分析和热重/热解吸光谱（TG / TDS）研究了复合材料的氢化和脱氢行为。发现在160-310℃的温度范围内存储的氢是100％可逆的。

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