Durability of Colloidally Stabilized Supported Nickel and Nickel Platinum Nanoparticles during Redox-Cycling

We report on the oxidation and reduction behavior of colloidally stabilized Ni nanoparticles Pt@NiPt core–shell with a platinum content 4%. Thin films both nanoparticle systems were deposited yttria-stabilized zirconia substrates by spin-coating. Oxidation–reduction cycles used to remove oxides organics obtain metallic particles. The cycling conditions necessary clean reduce milder than for nanoparticles, which also needed several burn off residual organics. During cycling, lost their initially epitaxial relationship substrate adopted random orientation, while no orientation was observable nanoparticles. Reasons this are discussed together influence reduction. sintered during process but retained crystalline domain diameters close original particle diameters. Our results show that can be transferred onto technologically relevant reduced fabrication final structures as feasible route realize solid oxide fuel cell anodes tailored nickel diameter.