Enhancing CoFe Catalysts with V₂CT_X MXene‐Derived Materials for Anion Exchange Membrane Electrolyzers

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 15, 2025

Abstract Herein, the synthesis and characterization of Co 0.66 Fe 0.34 layered double hydroxides (LDH) derived from pure vacancy‐engineered V 2 CT x MXenes their use as electrocatalysts for oxygen evolution reaction (OER) is reported. Two distinct MXene materials are investigated: pristine 1.8 containing 10% vanadium vacancies. Through systematic variation content (17–75 wt.%), it demonstrates that utilization significantly enhances OER activity compared to . The composite @V achieved superior performance with an overpotential 304 mV at 10 mA cm −2 (CFVv75), 317 best‐performing (CFV33). In situ X‐Ray absorption spectroscopy revealed formation highly oxidized (i.e., Co(III) Co(IV)) species during OER, while also indicating irreversible oxidation V(V). Despite partial leaching, both demonstrated excellent stability over 12 h operation 100 Notably, CFVv75 showed initial under practical anion exchange membrane electrolyzer conditions, operating cell voltages lower than This work potential vacancy engineering discovery using enhancing electrocatalytic provides insights into dynamic these conditions.

Язык: Английский

Reconstructed vanadium carbide MXene supported cerium based trimetallic phosphide as an efficient electrocatalyst for alkaline water splitting

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 163888 - 163888

Опубликована: Май 1, 2025

Язык: Английский