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Indexed by:期刊论文

Date of Publication:2019-05-01

Journal:ELECTROCHEMISTRY COMMUNICATIONS

Included Journals:SCIE、EI

Volume:102

Page Number:67-71

ISSN No.: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.