Strong Electronic Interaction Enhanced Electrocatalysis of Metal Sulfide Clusters Embedded Metal-Organic Framework Ultrathin Nanosheets toward Highly Efficient Overall Water Splitting.

ABSTRACT: Unique metal sulfide (MS) clusters embedded ultrathin nanosheets of Fe/Ni metal-organic framework (MOF) are grown on nickel foam (NiFe-MS/MOF@NF) as a highly efficient bifunctional electrocatalyst for overall water splitting. It exhibits remarkable catalytic activity and stability toward both the oxygen evolution reaction (OER, ƞ = 230 mV at 50 mA cm^-2) and hydrogen evolution reaction (HER, ƞ = 156 mV at 50 mA cm^-2) in alkaline media, and bi-functionally catalyzes overall alkaline water splitting at a current density of 50 mA cm^-2 by 1.74 V cell voltage without iR compensation. The enhancement mechanism is ascribed to the impregnated metal sulfide clusters in the nanosheets, which not only promote the formation of ultrathin nanosheet to

SUBMITTER: Zhao M 

PROVIDER: S-EPMC7578852 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature