(Fe_0.2Ni_0.8)_0.96S tubular spheres supported on Ni foam as an efficient bifunctional electrocatalyst for overall water splitting.

ABSTRACT: Earth-abundant and efficient bifunctional electrocatalysts for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are highly significant for renewable energy systems. However, the performance of existing electrocatalysts is usually restricted by the low electroic conductivity and the limited amount of exposed active sites. In this work, (Fe_0.2Ni_0.8)_0.96S tubular spheres supported on Ni foam have been prepared by a sulfuration of FeNi layered double hydroxide spheres grown on Ni foam. Benefiting from the unique tubular sphere architecture, the rich inner defects and the enhanced electron interactions between Fe, Ni and S, this electrocatalyst shows low overpotential of 48 mV for HER at 10 mA cm^-2 in 1.0 mol L^-1 K

SUBMITTER: Xu P 

PROVIDER: S-EPMC6013453 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature