Release Time:2019-11-07  Hits:

Indexed by: Journal Article

Date of Publication: 2019-05-01

Journal: ELECTROCHEMISTRY COMMUNICATIONS

Included Journals: EI、SCIE

Volume: 102

Page Number: 67-71

ISSN: 1388-2481

Key Words: Palladium hydride; Nanodendrites; Oxygen reduction reaction; Oxygen adsorption energy

Abstract: We report the synthesis of beta-palladium hydride nanodendrites (PdH0.33 NDs). The uniform PdH0.33 NDs are 36.3 +/- 5.0 nm in diameter and selectively expose (111) planes decorated with (221) and (331) high-indexed steps. The PdH0.33 NDs show a high mass activity of 0.719 A/mg(Pd) at 0.9 V (vs. reversible hydrogen electrode-RHE) toward alkaline oxygen reduction reaction (ORR), which is 3.7 and 6.3 times that of commercial Pt/C and house-made Pd/C, respectively. This study exemplifies the possibility of using special morphology and lattice H to modify the strain and electronic effect of metal for the optimization of functionalities.