The supplementary material include a table that listed the $T_c$ values of common two-dimensional molybdenum compounds, the structure and phonon spectrum of molybdenene, the phonon spectra of MoF/Li calculated by PAW+PBE and USPP+PBE methods, the ELF of MoF, the electronic band structures of
MoF/Li calculated by HSE06 method, the EPC properties of MoF, and the electron-phonon coupling strength $\lambda_{q u}^{ph}$ along the high-symmetry line.