کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1283544 | 1645389 | 2008 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A metal dusting process for preparing nano-sized carbon materials and the effects of acid post-treatment on their hydrogen storage performance A metal dusting process for preparing nano-sized carbon materials and the effects of acid post-treatment on their hydrogen storage performance](/preview/png/1283544.png)
The preparation of various nano-sized carbon materials (NCMs) using a metal dusting process, in which a stainless steel coupon and CO–CO2 mixed gas are the only reactants needed, is demonstrated in this study. During the process, fresh Fe–Ni nano-particles, which catalyze the formation of the NCMs, are produced spontaneously and continuously from the steel. The possibility of using multi-wall carbon nanotubes (CNTs) prepared at 600 °C as a hydrogen storage material is studied. Our electrochemical testing results indicate that the obtained CNTs have a hydrogen discharge capacity of as high as 104 mAh/g after being etched in 15 M boiling nitric acid solution for 4 h. However, it was found that prolonging the etching time not only decreases crystallinity but also damages the tubular structure of the CNTs, degrading the hydrogen storage performance.
Journal: International Journal of Hydrogen Energy - Volume 33, Issue 22, November 2008, Pages 6734–6742