标题：Effect of Potentiostatic Double Pulse Parameters on the Electrodeposition of Silver Nanoparticles for Electrocatalytic Oxidation of Ethanol in Fuel Cells
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2018
卷号：9
期号：12
页码：3180-3189
出版社：University of Mohammed Premier Oujda
摘要：Silver nanoparticles were electrodeposited on graphite by means of the double-pulsetechnique from cyanide-free bath to be used as electrocatalyst of ethanol oxidation infuel cells. The effect of double-pulse parameters on the electrocatalytic performanceand the stability of the electrocatalyst during the ethanol electrooxidation in alkalinemedia was investigated by field emission scanning electron microscope (FESEM),XRD and different electrochemical testing methods.The results derived showed thatincreasing the nucleation potential cathodically increase the nucleation rate andparticle density and decrease the particle size. Meanwhile, increasing nucleation timeincrease the particle density, decrease particle size and increase disparity. On the otherhand, increasing growth time increases the particle size, whereas increasing growthpotential cathodically from (OCP) is beneficial. The double pulse electrocatalystshows superior electrocatalytic performance and poisoning resistance over pulsedcurrent electrodes.
