Jump to main content
Jump to site search


Nanostructured NiFe (Oxy)hydroxide with Easily Oxidized Ni Towards Efficient Oxygen Evolution Reaction

Abstract

Water splits into hydrogen and oxygen electrochemically is one of the most promising strategies for the utilization and storage of solar energy. However, oxygen evolution reaction (OER) with sluggish kinetics hinders its larger-scale application. NiFe-based catalysts are one of the most efficient oxygen evolution catalysts (OECs). High-valence Ni is considered as active site or conductive framework in NiFe-based OECs. However, the oxidation of Ni usually be hindered in the presence of Fe. This paper describes an effective strategy to produce NiFe (oxy)hydroxide with easily oxidized Ni and hierarchical nanosheet structure as the most efficient OEC. High valence Ni may provide frameworks with good conductivity and facilitate OER in Fe active site. In addition, the hierarchical structure can increase the electrochemical surface area, resulting in more active sites for OER. The as-prepared Fe-O-Ni(OH)2 supported on nickel foam needs the overpotentials of 185, 220 and 261 mV to drive current densities of 10, 100 and 500 mA cm-2, respectively. The catalysts also shows excellent stability at the current density of 100 and 500 mA cm-2 for 50 hours.

Back to tab navigation

Supplementary files

Publication details

The article was received on 21 May 2018, accepted on 08 Aug 2018 and first published on 08 Aug 2018


Article type: Communication
DOI: 10.1039/C8TA04721A
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
  •   Request permissions

    Nanostructured NiFe (Oxy)hydroxide with Easily Oxidized Ni Towards Efficient Oxygen Evolution Reaction

    D. Zhong, L. Zhang, C. Li, D. Li, C. Wei, Q. Zhao, J. Li and J. Gong, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA04721A

Search articles by author

Spotlight

Advertisements