▎ 摘　　要

We present first-principles calculations on systems consisting of a few layers of graphene and lithium. In particular, we investigate the evolution of the electron-phonon coupling strength with increasing number of layers. We find that, for intercalated systems such as C-6-Li-C-6 or C-6-Li-C-6-Li-C-6, the electron-phonon coupling is weak. However, for systems of equal number of graphene and lithium layers, such as C-6-Li or C-6-Li-C-6-Li, the electron-phonon coupling is strong. We investigate the optimal configuration that yields the highest superconducting transition temperature.