title: Cation-Hydroxide-Water Coadsorption Inhibits the Alkaline Hydrogen Oxidation Reaction.
abstract: Rotating disk electrode voltammograms and infrared reflection absorption spectra indicate that the hydrogen oxidation reaction of platinum in 0.1 M tetramethylammonium hydroxide solution is adversely impacted by time-dependent and potential-driven cation-hydroxide-water coadsorption. Impedance analysis suggests that the hydrogen oxidation reaction inhibition is mainly caused by the hydrogen diffusion barrier of the coadsorbed trilayer rather than intuitive catalyst site blocking by the adsorbed cation species. These results give useful insights on how to design ionomeric binders for advanced alkaline membrane fuel cells.
authors: MPA-11: Materials Synthesis and Integrated Devices, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States.
authors: Hoon Taek
authors: HT
authors: Chung
authors: MPA-11: Materials Synthesis and Integrated Devices, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States.
authors: Ulises
authors: U
authors: Martinez
authors: Department of Chemical and Biological Engineering, Center for Micro-Engineered Materials (CMEM), The University of New Mexico , Albuquerque, New Mexico 87231, United States.|T-1: Physics and Chemistry of Materials, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States.
authors: Ivana
authors: I
authors: Matanovic
authors: MPA-11: Materials Synthesis and Integrated Devices, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States.
authors: Yu Seung
authors: YS
authors: Kim