Ultrafast synthesis of NiFe electrocatalysts via a Fenton-assisted corrosion strategy for alkaline water and urea oxidation

Abstract

A facile Fenton-assisted etching method was delicately designed to grow NiFe hydroxides onto the porous NF substrate. An extraordinary oxygen evolution reaction (OER) performance both in alkaline water and salty...

Corrosion Engineering towards NiFe‐Layered Double Hydroxide Macroporous Arrays with Enhanced Activity and Stability for Oxygen Evolution Reaction

“…[9][10][11] Among the numerous non-noble based OER catalysts, the NiFe-based layered double hydroxides (NiFe-LDH) are displayed as the hopeful OER electrocatalysts and expected to replace the noble metal ones, owing to the excellent OER activity and low cost. [12][13][14][15][16][17][18][19][20][21][22][23][24] Despite the improvement obtained in the OER activity, the stability under large current is the major challenge to employing the NiFe-LDH in practical water splitting. Most of recent OER electrocatalysts are tested under low current densities and these catalysts maintain OER activity around 100 h. [25,26] There are two main reasons for the deactivation of catalysts.…”