Effects of carbon black, graphite and carbon nanotube additives on hydrogen storage properties of magnesium

被引：121

作者：

Huang, Z. G. ^{[1
]}

Guo, Z. P.

Calka, A.

Wexler, D.

Liu, H. K.

机构：

[1] Univ Wollongong, Inst Supercond & Elect Mat, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, Dept Mat Sci & Engn, Wollongong, NSW 2522, Australia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 427卷 / 1-2期

基金：

澳大利亚研究理事会;

关键词：

hydrogen storage materials; mechanical alloying;

D O I：

10.1016/j.jallcom.2006.03.069

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 effects of different carbon additives: carbon black, graphite and multi-walled carbon nanotubes, on the hydrogen storage properties of magnesium were investigated and compared. Samples of Mg containing 5 wt.% additive were prepared by milling in hydrogen gas using a magnetically controlled ball mill. Structural and phase evolution were investigated using X-ray diffractometry (XRD) and morphology and microchemistry by scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS). Raman spectroscopy was used to investigate changes in the nature of carbon-carbon bonding, differential scanning calorimetry (DSC) to investigate desorption characteristics, and thermogravimetry (TG) to estimate the hydrogen storage capacity of both milled and rehydrogenated samples. There was no significant difference in the hydrogen storage capacity between the as-prepared (6.4wt.%) and rehydrogenated (6.2wt.%) composites, however, the rehydrogenated composite containing graphite displayed a remarkable decrease in the desorption temperature, a result which wants further investigation. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：94 / 100

页数：7

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