In this paper, the properties and dissolution trends of the surfaces doped with different metal atoms on the Al(100) surface were investigated by the density functional theory calculations. A surface impurity model was proposed by replacing the topmost surface layer Al atoms by Me (Me = Zn, Ga, In, Sn and Pb) atoms with the coverage of 1/9, 1/4, 1/2, and 3/4 monolayer, respectively. Results show that the surface energy of Me-Al(100) surfaces depends primarily on the nature of the impurity atom species and the monolayer coverage. The work function of Me-Al surfaces is smaller than that of pure Al(100) surface, and decreases almost linearly with the amount of Me. It is found that the Me-Al alloys are more easily dissolvable than the pure Al, due to the fact that the electrochemical dissolution potential shifts were negative for all Me-Al(100) surfaces with respect to the clean pure Al(100) surface. (C) 2010 Elsevier B. V. All rights reserved.