Electrocatalysts play a vital role to overcome the slow kinetics of the oxygen evolution reaction (OER). Herein, we developed iron-doped (Fe-doped) NiCoO2 nanoplates with NaCl-type structure as an efficient electrocatalyst to speed up OER. NiCoO2 nanoplates doping with different concentration of Fe were optimized. Specifically, the catalytic properties of 10 mol% Fe-doped NiCoO2 (denoted as FNC0.1) showed outstanding OER catalytic activity, with an overpotential of 302 mV and a low Tafel slope of 42 mV dec(-1) at 10 mA cm(-2) in 0.1 M KOH. More importantly, the activity of FNC0.1 was only about 3% loss after 10 h of stability measurements at 1.53 V vs. RHE. The dramatically enhanced OER performance of the FNC0.1 might derive from the synergistic interplay of Co, Ni and Fe, a certain level of amorphization and easily hydroxylation after doping Fe. This work demonstrated that doping Fe would be beneficial to improve the OER activities and the stabilities of the catalysts. (C) 2017 Elsevier B.V. All rights reserved.