  Present study provides a comprehensive theoretical analysis of the
superconducting phase in selected lithium-decorated bilayer graphene
nanostructures. The numerical calculations, conducted within the Eliashberg
formalism, give quantitative estimations of the most important thermodynamic
properties such as the critical temperature, specific heat, critical field and
others. It is shown that discussed lithium-graphene systems present enhancement
of their thermodynamic properties comparing to the monolayer case e.g. the
critical temperature can be raised to $\sim 15$ K. Furthermore, estimated
characteristic thermodynamic ratios exceed predictions of the
Bardeen-Cooper-Schrieffer theory suggesting that considered lithium-graphene
systems can be properly analyzed only within the strong-coupling regime.
