
Article Title
Iron-doped nickel disulfide nanoarray: A highly efficient and stable electrocatalyst for water splitting
Keywords
nickel disulfide (NiS2), iron doping, nanosheet array, water splitting, oxygen evolution reaction
Abstract
ABSTRACT Developing efficient water-splitting electrocatalysts, particularly for the anodic oxygen evolution reaction (OER), is an important challenge in energy conversion technologies. In this study, we report the development of iron-doped nickel disulfide nanoarray on Ti mesh (Fe0.1-NiS2 NA/Ti) via the sulfidation of its nickel–iron-layered double hydroxide precursor (NiFe-LDH NA/Ti). As a three-dimensional OER anode, Fe0.1-NiS2 NA/Ti exhibits remarkable activity and stability in 1.0 M KOH, with the requirement of a low overpotential of 231 mV to achieve 100 mA·cm−2. In addition, it exhibits excellent activity and durability in 30 wt.% KOH. Notably, this electrode is also efficient for the cathodic hydrogen evolution reaction under alkaline conditions.
Graphical Abstract
Publisher
Tsinghua University Press
Recommended Citation
Na Yang,Chun Tang,Kunyang Wang,Gu Du,Abdullah M. Asiri,Xuping Sun, Iron-doped nickel disulfide nanoarray: A highly efficient and stable electrocatalyst for water splitting. NanoRes.2016, 9(11): 3346–3354