Abstract
The throughput of six combinations of modified graphene membranes as regards the penetration of lithium ions is studied by a molecular dynamics method. The membrane modification involves formation of four types of pores and their partial hydrogenation. The best throughput capacity is demonstrated by a pair of membranes with pores represented by bivacancies. In this case, the mobility of lithium ions is the highest in the vertical driving-force direction and the lowest in the horizontal directions. The average level to which the ions in the basic cell are elevated serves as a reliable criterion of efficiency of the device studied. The increase in membrane throughput is associated with weakening of local stresses created by both horizontal and vertical forces.
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Original Russian Text © A.E. Galashev, Yu.P. Zaikov, 2015, published in Elektrokhimiya, 2015, Vol. 51, No. 9, pp. 983–993.
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Galashev, A.E., Zaikov, Y.P. Molecular dynamics study of Li+ migration through graphene membranes. Russ J Electrochem 51, 867–876 (2015). https://doi.org/10.1134/S1023193515090050
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DOI: https://doi.org/10.1134/S1023193515090050