东华大学学报（英文版）2025，Vol.42Issue(3)：219-229,11.DOI:10.19884/j.1672-5220.202404003
介孔Ti3C2负载酞菁铁电催化剂设计及其碱性条件下氧还原性能研究
Mesoporous Ti3C2-Loaded Iron Phthalocyanine(FePc)Electrocatalyst for Efficient Oxygen Reduction Reaction under Alkaline Conditions
摘要
Abstract
MXene has attracted great attention due to its high conductivity,large specific surface area and tunable surface functional groups.However,MXene(e.g.,Ti3C2)nanosheets tend to stack and mainly offer in-plane sites,showing limited capability in improving the oxygen reduction reaction(ORR)performance of iron phthalocyanine(FePc).In this study,mesoporous Ti3C2(Meso-Ti3C2)loaded FePc(FePc/Meso-Ti3C2)catalysts were prepared by a simple ultrasonic liquid-phase compounding strategy.Meso-Ti3C2 possesses abundant mesopores and edge sites,which optimize the coordination environment and the electronic structure of the FeN4 center in FePc.This optimization improves the mass transfer and the accessibility of the active sites,synergistically enhancing the ORR performance of FePc.As a result,FePc/Meso-Ti3C2 shows excellent ORR activity and stability under alkaline conditions with a half-wave potential of 0.914 V against the reversible hydrogen electrode(RHE)and a Tafel slope of 57.2 mV/dec.Furthermore,the zinc-air battery assembled with FePc/Meso-Ti3C2 delivers a peak power density of 183.1 mW/cm2 and a good long-term discharge stability,exceeding those of FePc/Ti3C2 and commercial 20％Pt/C catalysts(20％Pt by mass).关键词
介孔Ti3C2/酞菁铁/氧还原反应/边缘位点Key words
mesoporous Ti3C2/iron phthalocyanine(FePc)/oxygen reduction reaction/edge site分类
化学化工引用本文复制引用
王鑫,惠明明,杨升元,卜凡兴,罗维..介孔Ti3C2负载酞菁铁电催化剂设计及其碱性条件下氧还原性能研究[J].东华大学学报（英文版）,2025,42(3):219-229,11.基金项目
National Outstanding Youth Science Foundation,China(No.52225204) （No.52225204）
