Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1275451 | International Journal of Hydrogen Energy | 2012 | 5 Pages |
Palladium nanocubes (27, 48, and 63 nm) composed of (100) planes were successfully synthesized for use in oxygen electroreduction in 1-M NaOH electrolyte. The results (at −0.1 V vs. Ag/AgCl) of a rotating ring-disk electrode measurement showed that the specific activities of the 27-, 48-, and 63-nm Pd nanocubes were 3.05 × 10−2, 3.41 × 10−2, and 2.44 × 10−2 mA cm−2, respectively. 48 nm Pd nanocubes exhibited the higher activity than larger nanocubes and 9 nm Pd nanoparticles, where the specific activity of nanoparticles was 2.16 × 10−2 mA cm−2.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights▶ High yield Pd nanocubes (27, 48, and 63 nm) were successfully synthesized for use in oxygen electroreduction. ▶ As determined via electron diffraction, the nanocubes feature {100} structures. ▶ The specific activities of the 27-, 48-, and 63-nm Pd nanocubes were 3.05 × 10−2, 3.41 × 10−2, and 2.44 × 10−2 mA cm−2, respectively. ▶ An approximately 4-electron pathway was happened on these Pd nanocubes.