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Research on the Performance of Amino-Functionalized MXene-Supported Iron Phthalocyanine Catalysts for Oxygen Reduction Reaction
Chen YANG, Yunkun DAI, Yunlong ZHANG, Zhenbo WANG, Lei ZHAO
Abstract25)   HTML1)    PDF (2474KB)(11)      

Against the backdrop of rising global energy needs and pressing environmental concerns,the advancement of efficient and sustainable green energy technologies is paramount.Zinc-air batteries (ZABs) present a highly promising solution,offering a high theoretical energy density and zero-carbon emissions.However,their widespread adoption is limited by the sluggish kinetics of the oxygen reduction reaction(ORR) at the air cathode and the inherent high cost and poor stability of precious-metal catalysts. Herein,we innovatively prepared a NH?-MXene/FePc composite catalyst by anchoring iron phthalocyanine(FePc) onto amino-functionalized MXene(NH2-MXene) as the support.The influence of the 3-aminopropyltriethoxysilane(APTES) addition amount on the catalyst's structure and ORR performance was systematically studied.The optimized NH2-MXene /FePc-100 catalyst demonstrates exceptional ORR activity,characterized by a high half-wave potential of 0.92 V,a low Tafel slope of 65.94 mV/dec, and a dominant four-electron transfer pathway.Notably,it exhibits outstanding stability,showing a minimal E1/2 degradation of only 20 mV after 5 000 cycles of accelerated durability test cycles.Moreover,ZABs equipped with this catalyst achieve superior performance,delivering a peak power density of 182.3 mW/cm2 and a specific capacity of 774.7 mA·h/g which significantly surpasses that of commercial Pt/C-based devices.

2026, 39 (1): 20-26. DOI: 10.12422/j.issn.1006-396X.2026.01.003