Two-dimensional vanadium carbide (V2C) MXene boosted nickel iron phosphide derived from prussian blue analogue for electrocatalytic oxygen evolution reaction
Journal
International Journal of Hydrogen Energy
Journal Volume
111
Start Page
40
End Page
51
ISSN
0360-3199
Date Issued
2025-03-20
Author(s)
Abstract
Exploring low-cost and efficient electrocatalysts to replace precious metal-based catalysts for water splitting remains a significant challenge. Prussian blue analogues (PBAs) have been widely utilized as sacrificial templates for electrochemical applications due to their conducting carbon frameworks, bimetallic centers and highly porous structure. In this study, nickel iron phosphide on carbon matrix grown on vanadium carbide MXene (CP–NiFe/V2C) derived from NiFe PBA is firstly reported as an efficient electrocatalyst for oxygen evolution reaction (OER). Benefiting from the excellent electrical conductivity of V2C MXene and the outstanding electrocatalytic activity of nickel iron phosphide, CP-NiFe/V2C exhibits a low overpotential of 239 mV at 10 mA cm−2 and a small Tafel slope of 64.3 mVdec−1 in 1 M KOH electrolyte. Furthermore, the strong adhesion of nickel–iron phosphide to V2C MXene and the mesoporous structure, facilitates rapid O2 bubble release, contribute to its superior long-term stability for at least 100 h.
Subjects
Electrocatalysis
MXene
Nickel iron phosphide
Oxygen evolution reaction
Prussian blue analogue
SDGs
Publisher
Elsevier BV
Type
journal article