Modification of Multi-walled Carbon Nanotubes and Its Performance for Hydrogen Storage

Abstract

Abstract: The hydrogen storage capability of the multi-walled carbon nanotubes(MWNTs) were enhanced by chemical modifications, plasma treatment or by loading the active metals. Temperature programmed desorption(TPD) was used to test the desorption characters and calculate the mass fraction of the adsorbed hydrogen, from the peak area in TPD spectrum and the corresponding factor of hydrogen. The results showed that hydrogen storage capacities in the MWNTs increased greatly, after the chemical modification or when it was loaded with active metals. The best value in the experiments reached mass fraction 2.55%, which was seven times of that of the MWNTs without any treatment. So it was concluded that the hydrogen storage capacities in the MWNTs were improved greatly with the modifications.

Key words: Multi-walled carbon nanotubes, Hydrogen storage material, Chemical modification, Adsorption-desorption of hydrogen, Plasma

CLC Number:

O612.4

TrendMD:

ZHANG Xiong-Wei, CHU Wei, ZHUANG Hui-Xiang, XU Shi-Wei . Modification of Multi-walled Carbon Nanotubes and Its Performance for Hydrogen Storage[J]. Chem. J. Chinese Universities, 2005, 26(3): 493.

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Modification of Multi-walled Carbon Nanotubes and Its Performance for Hydrogen Storage

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