Nitrogen-Doped Carbon-Encased Bimetallic Selenide for High-Performance Water Electrolysis.

ABSTRACT: Demand of highly efficient earth-abundant transition metal-based electrocatalysts to replace noble metal materials for boosting oxygen evolution reaction (OER) is rapidly growing. Herein, an electrochemically exfoliated graphite (EG) foil supported bimetallic selenide encased in N-doped carbon (EG/(Co, Ni)Se₂-NC) hybrid is developed and synthesized by a vapor-phase hydrothermal strategy and subsequent selenization process. The as-prepared EG/(Co, Ni)Se₂-NC hybrid exhibits a core-shell structure where the particle diameter of (Co, Ni)Se₂ core is about 70 nm and the thickness of N-doped carbon shell is approximately 5 nm. Benefitting from the synergistic effects between the combination of highly active Co species and improved electron transfer from Ni species

SUBMITTER: Cao J 

PROVIDER: S-EPMC7770840 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature