ملخص: In this investigation, Bi2Ru2O7 pyrochlore-type oxide was prepared using the Pechini process. We employed a sol-gel route, in which a solution of Ru(III) and Bi(III) in a mixture of citric acid and ethylene glycol was heated to form a polymeric precursor, followed by an annealing at higher temperatures during various periods. The oxide obtained was identified by X-ray diffraction analysis. The results revealed that the formation of homogeneous oxide with a single pyrochlore structure phase occured at or above 650[deg]C. Sample powders consisted of fine grains with homogeneous morphology and an average size of about 0.5 [mu]m. This new preparation procedure yielded an electrode material with improved electrochemical activity compared to those elaborated through conventional methods.

لغة: إنجليزية