Developpement de materiaux d’electrodes composites par incorporation de particules metalliques dans des films de polymeres complexants : application en electrocatalyse

Abstract

Nickel-polymer composite electrode materials have been synthesized using various strategies, all comprising the électochemical reduction of nickel (II) cations or complexes, incorporated by either ion exchange or complexation into various poly (pyrrole-carboxylate) thin films coated by oxidative electopolymerization onto carbon electrodes. The electrocatalytic activity and the stability of the different composites have been then evaluated in the course of the electrocatalytic hydrogenation of ketones and enones in aqueous electrolytes. The best results were obtained using nickel-polymer composites synthesized by electroreduction of nickel (II) ions complexed into polycarboxylate films, which are characterized by a high catalytic activity and a good operational stability.