The Reaction Thermodynamics during Plating Al on Graphene Process

This research explored a novel chemical reduction of organic aluminum for plating Al on a graphene surface. The thermodynamics of the Al plating reaction process were studied. The Al plating process consisted of two stages: the first was to prepare (C2H5)(3)Al. In this reaction, the H(enthalpy) was 10.64 kcal/mol, the G(Gibbs free energy) was 19.87 kcal/mol and the S(entropy) was 30.9 cal/(molK); this was an endothermic reaction. In the second stage, the (C2H5)(3)Al decomposed into Al atoms, which were gradually deposited on the surface of the graphene and the Al plating formed. At 298.15 K, the H was -20.21 kcal/mol, the G was -54.822 kcal/mol, the S was 116.08 cal/(molK) and the enthalpy change was negative, thus indicating an endothermic reaction.