Article Title

Iron-doped nickel disulfide nanoarray: A highly efficient and stable electrocatalyst for water splitting

Authors

Na Yang, College of Chemistry, Sichuan University, Chengdu 610064, China
Chun Tang, College of Chemistry, Sichuan University, Chengdu 610064, China
Kunyang Wang, Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, China
Gu Du, Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, China
Abdullah M. Asiri, Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Xuping Sun, College of Chemistry, Sichuan University, Chengdu 610064, China

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

DOI

https://doi.org/10.1007/s12274-016-1211-x

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