کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1270895 | 1497547 | 2012 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Mechanical alloying preparation of fullerene-like Co3C nanoparticles with high hydrogen storage ability Mechanical alloying preparation of fullerene-like Co3C nanoparticles with high hydrogen storage ability](/preview/png/1270895.png)
Fullerene-like orthorhombic-structured Co3C nanoparticles have been synthesized by direct ball-milling of Co and graphene (GE) powders with different Co/GE weight ratios. Electrochemical measurements showed that the Co3C nanoparticles displayed excellent electrochemical hydrogen storage capacities and the maximum capacity reached 1415 mA h/g (5.176 wt% hydrogen) at room temperature and ambient pressure. The reaction mechanism and the reasons for the differences of the Co3C electrodes were also investigated. It was found that the quasi-reversible Co3CHx/Co3C reaction was dominant for all the Co3C electrodes.
► A series of Co3C nanoparticles have been synthesized by direct ball-milling.
► The maximum capacity reached 1415 mA h/g (5.176 wt% hydrogen) at ambient atmosphere.
► The reaction mechanism and the reasons were investigated.
► It is first report for the practical applications (>5 wt%) at ambient atmosphere.
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 22, November 2012, Pages 17126–17130