Miyaoka, Hiroki and Ichikawa, Takayuki and Kojima, Yoshitsugu (2009) The reaction process of hydrogen absorption and desorption on the nanocomposite of hydrogenated graphite and lithium hydride. Nanotechnology, 20 (20). p. 204021.
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Official URL: http://stacks.iop.org/0957-4484/20/i=20/a=204021
The lithiumâcarbonâhydrogen (LiâCâH) system is composed of hydrogenated nanostructural graphite (C nano H x ) and lithium hydride (LiH). C nano H x is synthesized by ball-milling of graphite under a hydrogen atmosphere. In this work, the reaction process of hydrogen absorption and desorption on the LiâCâH system is investigated. The C nano H x âLiH composite can desorb about 5.0 mass% of hydrogen at 350 Â°C with the formation of Li 2 C 2 until the second cycle. However, the hydrogen desorption amount significantly decreases from the third cycle. Furthermore, it is shown by using gas chromatography that a considerable amount of hydrocarbons is desorbed during the rehydrogenation process. These results indicate that the amount of reaction between the polarized CâH groups in C nano H x and LiH is reduced due to a decrease in the CâH groups by losing carbon atoms under the hydrogen absorption and desorption cycles.
|Deposited By:||Prof. Alexey Ivanov|
|Deposited On:||02 Nov 2011 00:12|
|Last Modified:||02 Nov 2011 00:47|
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