학술논문
Fe-doped NiCo2O4hollow hierarchical sphere as an efficient electrocatalyst for oxygen evolution reaction
Document Type
Article
Author
Source
Frontiers of Materials Science; December 2021, Vol. 15 Issue: 4 p577-588, 12p
Subject
Language
ISSN
2095025X; 20950268
Abstract
We prepared porous Fe-doped nickel cobaltate (Fe-NiCo2O4) hollow hierarchical nanospheres through a facile self-templated synthetic strategy. Due to the porous hollow structure and composition, the Fe-NiCo2O4 presented vastly superior electrocatalytic activity for the oxygen evolution reaction (OER), compared with NiCo2O4and the majority of other OER catalysts. With an aim of stimulating a current density of 10 mA·cm−2, the Fe-NiCo2O4catalyst needs an overpotential of 210 mV, which is on a par with the general properties of commercial IrO2. In addition, the Fe-NiCo2O4catalyst performed stably in long-term testing. The excellent activity and long-term stability showed that such catalysts have great promise for widespread application in the field of water splitting.