Investigation of single-walled carbon nanotubes-titanium metal composite as a possible hydrogen storage medium

被引：25

作者：

Silambarasan, D. ^{[1
]}

Surya, V. J. ^{[2
]}

Vasu, V. ^{[1
]}

Iyakutti, K. ^{[3
]}

机构：

[1] Madurai Kamaraj Univ, Sch Phys, Madurai 625021, Tamil Nadu, India

[2] Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808579, Japan

[3] SRM Univ, Dept Phys & Nanotechnol, Kattankulathur 603203, Tamil Nadu, India

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2013年 / 38卷 / 34期

关键词：

SWCNTs-Ti Composite; Hydrogen storage; Electron beam evaporation; Desorption temperature; Binding energy; ATOMIC-HYDROGEN; ADSORPTION; SPILLOVER; PHYSISORPTION; CAPACITY; NI; TI;

D O I：

10.1016/j.ijhydene.2013.09.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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 degrees C. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：14654 / 14660

页数：7

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