This paper presents the results of prognostic modeling of the process of filling graphene nanoblisters with hydrogen. To carry out numerical molecular dynamics experiments, atomistic models of graphene nanoblisters were constructed in accordance with the data of a natural experiment. A numerical estimate of the mechanical stability of blisters containing structural defects of the atomic network is given. The effect of defects on the process of filling a blister with hydrogen has been studied. It is established that in the process of filling with a blister of hydrogen, atomic hydrogen is almost completely transferred to molecular. For the constructed models of blisters, the limiting concentration of stored hydrogen was found.
The paper presents the results of a theoretical prediction of the energy stability of graphene nanoblisters with various geometrical parameters. As a criterion for the evaluation of the stability of investigated carbon objects we propose to consider the value of local stress of the nanoblister atomic grid. Numerical evaluation of stresses experienced by atoms of the graphene blister framework was carried out by means of an original method for calculation of local stresses that is based on energy approach. Atomistic models of graphene nanoblisters corresponding to the natural experiment data were built for the first time in this work. New physical regularities of the influence of topology on the thermodynamic stability of nanoblisters were established as a result of the analysis of the numerical experiment data. We built the distribution of local stresses for graphene blister structures, whose atomic grid contains a variety of structural defects. We have shown how the concentration and location of defects affect the picture of the distribution of the maximum stresses experienced by the atoms of the nanoblisters.
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