A bimetallic oxide Fe_1.89Mo_4.11O₇ electrocatalyst with highly efficient hydrogen evolution reaction activity in alkaline and acidic media.

ABSTRACT: Transition-metal Mo-based materials have been considered to be among the most effective hydrogen evolution reaction (HER) electrocatalysts. Regulating the electronic structure of Mo atoms with guest metal atoms is considered as one of the important strategies to improve their HER activity. However, introduction of guest metal elements in the vicinity of Mo sites with atomic-level hybridization is difficult to realize, resulting in the failure of the modified electronic structure of Mo sites. Herein, an Fe_1.89Mo_4.11O₇/MoO₂ material is prepared through the thermal treatment of a ferrimolybdate precursor. It exhibits a Tafel slope of 79 mV dec^-1 and an exchange current density of 0.069 mA cm^-2 in 1 M KOH medium, as well as a Ta

SUBMITTER: Hao Z 

PROVIDER: S-EPMC6049016 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature