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Acta Phys. -Chim. Sin.  2007, Vol. 23 Issue (09): 1399-1404    DOI: 10.3866/PKU.WHXB20070917
Article     
The Electrochemical Hydrogen Storage Properties of Ordered Mesoporous Carbons
LIU Yu-Lin; LI Li-Xia; CHEN Xiao-Hong; SONG Huai-He
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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Abstract  Ordered mesoporous carbon materials were successfully synthesized by an easy method of the carbonization of sulfuric-acid-treated silica/triblock copolymer/sucrose composites. The morphologies, structures and pore characteristics of the carbon materials were investigated by X-ray diffraction (XRD), nitrogen adsorption desorption and transmission electron microscopy (TEMand HRTEM) measurements. On the basis of comparing the surface areas and pore properties of two ordered mesoporous carbons obtained by changing the content of the reactants, their electrochemical hydrogen storage capacities were tested by Galvanostatic charge-discharge measurement. The results showed that the carbon material (C-P) with higher specific surface area (720 m2·g-1) and pore volume (0.86 cm3·g-1) had higher hydrogen storage capacity (70.1 mAh·g-1) than the carbon material (C-S) (64.1 mAh·g-1) with lower specific surface area (610 m2·g-1) and pore volume (0.66 cm3·g-1). Both of the two ordered mesoporous carbons exhibited higher hydrogen storage capacities than the single-walled carbon nanotubes (25.9 mAh·g-1). The cyclic voltammetry measurement indicated that the ordered mesoporous carbon electrode possessed higher electrochemical activity than single-walled carbon nanotubes electrode.

Key wordsOrdered mesoporous carbon      Electrochemical hydrogen storage      Hydrogen adsorption     
Received: 30 January 2007      Published: 06 July 2007
MSC2000:  O646  
Corresponding Authors: SONG Huai-He     E-mail: songhh@mail.buct.edu.cn
Cite this article:

LIU Yu-Lin; LI Li-Xia; CHEN Xiao-Hong; SONG Huai-He. The Electrochemical Hydrogen Storage Properties of Ordered Mesoporous Carbons. Acta Phys. -Chim. Sin., 2007, 23(09): 1399-1404.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20070917     OR     http://www.whxb.pku.edu.cn/Y2007/V23/I09/1399

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