Abstract
The fabrication of highly efficient and stable catalysts for water oxidation is important to promote the development of the hydrogen fuel industry. In this study, dual-element-doped two-dimensional nickel hydroxide nitrate nanoarrays (NiHN) self-supported on nickel foam were fabricated via a facile electrodeposition process. The results demonstrated that Fe and Se were incorporated into the nickel hydroxide structure. The binder-free FeSe-NiHN catalyst exhibited low overpotentials of 129 and 250 mV at 10 mA cm−2 for the hydrogen evolution reaction and at 100 mA cm−2 for the oxygen evolution reaction in 1 M KOH media, respectively. Furthermore, a durability test conducted at 70 mA cm−2 for 28 h showed no evident degradation of the catalyst activity, verifying its exceptional stability. Thus, FeSe-NiHN is a potential water splitting electrocatalyst for inexpensive hydrogen production.
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