Year: 2024
Type: article
Abstract: The oxygen evolution reaction (OER), which involves a four-electron transfer and slow kinetics, requires an efficient catalyst to overcome the high energy barrier for high-performance water electrolysis. In this paper, a novel Ni3S2@V-NiFe(III) LDH/NF catalyst was prepared via a facile two-step hydrothermal method. The constructed heterostructure of Ni3S2@V-NiFe(III) LDH increases the specific surface area and regulates the electronic structure. Furthermore, the introduction of the V element forms an electron transport chain of Ni-O-Fe-O-V-O-Ni, which optimizes the binding energy between metal active sites and oxygen evolution reaction intermediates, accelerates electron transfer, and improves self-reconstruction. With this dual regulation strategy, Ni3S2@V-NiFe(III) LDH/NF exhibits exceptional OER performance with an overpotential of 280 mV at 100 mA/cm2 and a Tafel slope of 45.4 mV/dec. This work develops a dual regulation strategy combining heterostructure formation and the doping effect, which are beneficial in the design of efficient OER catalysts.
Source: Molecules
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,069
Awards: G1023864153, G1132287399, G1227859990, G1818727510, G2056001768, G2165061054, G2460971347, G2918964702, G3109419271, G3307596972, G3470502933, G3523181821, G3800355239, G4448924881, G4671158476, G4746940399, G5905072245, G6174346213, G6300337001, G6382613038, G6459380333, G6627761990, G718086529, G7268678406, G7702583361
OpenAlex ID: W4405644289