Effect of pulsed high-frequency discharge treatment of graphene oxide on low-temperature hydrogen sorption
A.V. Dolbin1, N.A. Vinnikov1, V.B. Esel’son1, V.G. Gavrilko1, R.M. Basnukaeva1, M.V. Khlistyuck1, A.I. Prokhvatilov1, V.V. Meleshko1
O.L. Rezinkin2, M.M. Rezinkina2, S.V. Cherednychenko2, and L. Kępiński3
1B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
2National Technical University “Kharkiv Polytechnic Institute”, 2 Kyrpychov Str., Kharkiv 61002, Ukraine
3Institute for Low Temperatures and Structure Research Polish Academy of Sciences ul. Okólna 2, 50-422 Wrocław, Poland
Received October 9, 2019, published online January 27, 2020
By the scanning electron microscopy, X-ray diffraction and thermoprogrammed desorption the effect of treatment by pulsed high-frequency discharge in a hydrogen atmosphere on the morphology, structure, and sorption characteristics of thermally reduced graphene oxide (TRGO) was investigated. It is shown that treatment with a pulsed gas discharge increased the physical sorption of hydrogen by a factor of 1.5. It can be assumed that the increase in the sorption capacity is due to in the distance between adjacent carbon surfaces in packages of graphene planes during their chemical interaction with ionized during the discharge process hydrogen.
Key words: graphene, graphene oxide, hydrogen sorption, pulsed discharge.