Chen-Han LinSakthivel PerumalYin-Chen LinLi-Yin HsiaoLu-Yin LinKUO-CHUAN HO2025-05-172025-05-172025-03-20https://www.scopus.com/record/display.uri?eid=2-s2.0-85218350184&origin=recordpagehttps://scholars.lib.ntu.edu.tw/handle/123456789/729387Exploring 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.ElectrocatalysisMXeneNickel iron phosphideOxygen evolution reactionPrussian blue analogue[SDGs]SDG7journal article10.1016/j.ijhydene.2025.02.295