| 초록 |
Pt-based nanocrystals have been largely studied due to high activity and stability as electrocatalysts in fuel cell and water electrolyzer. For optimal electrocatalytic performance, adsorption properties should be tailored toward the maximized turnover frequency and minimized surface coverage of spectator ions. Traditionally, various approaches have been suggested on control over morphology, composition, and dopants. However, there have been limited studies on the impact of carbon support surface on the adsorption properties of Pt nanocrystals. In this study, we report an unexpected change in adsorption behaviors of Pt surface when supported on the N-functionalized carbon surface. Affinity toward both protons and oxygen species are highly attenuated, resulting in tailored electrocatalytic properties in acidic and alkaline electrolytes. This study will suggest the importance of carbon surface as another factor toward tailoring the performance of nano-particulate electrocatalysts. |
