In JoVE (1)
Other Publications (1)
Articles by Bryan S. Pivovar in JoVE
Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance Shaun M. Alia1, Bryan S. Pivovar1 1Chemistry and Nanoscience Center, National Renewable Energy Laboratory The protocol describes the synthesis and electrochemical testing of platinum-nickel nanowires. Nanowires were synthesized by the galvanic displacement of a nickel nanowire template. Post-synthesis processing, including hydrogen annealing, acid leaching, and oxygen annealing were used to optimize nanowire performance and durability in the oxygen reduction reaction.
Other articles by Bryan S. Pivovar on PubMed
Single-Molecule Nanocatalysis Shows In Situ Deactivation of Pt/C Electrocatalysts During the Hydrogen-Oxidation Reaction Angewandte Chemie (International Ed. in English). | Pubmed ID: 26821777 By coupling a Pt-catalyzed fluorogenic reaction with the Pt-electrocatalyzed hydrogen-oxidation reaction (HOR), we combine single-molecule fluorescence microscopy with traditional electrochemical methods to study the real-time deactivation kinetics of a Pt/C electrocatalyst at single-particle level during electrocatalytic hydrogen-oxidation reaction. The decay of the catalytic performance of Pt/C could be mainly attributed to the electrocatalysis-induced etching or dissolution of Pt nanoparticles. Spontaneous regeneration of activity and incubation period of the Pt electrocatalyst were also observed at single-particle level. All these new insights are practically useful for the understanding and rational design of highly efficient electrocatalysts for application in fuel cells.