Trouillier-Martins type in the form of Kleinman and Bylander 49 were used to describe the valence-core electron interaction in CPMD. A large cutoff of 80 Ry was used. Such a high cutoff is recommended for metal atoms using Trouillier-Martins pseudopotentials. Our testing found that the metal-water interface was unstable at lower cutoffs. Spin polarization was considered using the Local Spin Density (LSD) approximation. Our tests found that spin polarization was also essential to describe the interface. Molecular dynamics of the Car-Parrinello type were performed using a timestep of 0.12 fs and a fictitious electron mass of 600 amu. Van Der Waals forces were again considered using the DFT-D2 corrections of Grimme. . A chain of Nose-Hoover thermostats was employed to manage electronic and ionic dynamics. The traditional metadynamics algorithm was employed with hill dimensions of 0.1 Å and 0.023 eV. Sampling was performed until at least 5000 hills and 10 crossings were observed. Hills were deposited at a rate of 10 -2 fs -1 .