  We study a moving adsorbate interacting with a metal electrode immersed in a
solvent using the time-dependent Newns-Anderson-Schmickler model Hamiltonian.
We have adopted a semiclassical trajectory treatment of the adsorbate to
discuss the electron and energy transfers that occur between the adsorbate and
the electrode. Using the Keldysh Green's function scheme, we found a
non-adiabatically suppressed electron transfer caused by the motion of the
adsorbate and coupling with bath phonons that model the solvent. The energy is
thus dissipated into electron-hole pair excitations, which are hindered by
interacting with the solvent modes and facilitated by the applied electrode
potential. The average energy transfer rate was discussed in terms of the
electron friction coefficient and given an analytical expression in the
slow-motion limit.
