电化学（中英文）2025，Vol.31Issue(4)：12-23,12.DOI:10.61558/2993-074X.3519
Pt2NiCo金属间化合物的有序度调控及电催化氧还原反应性能研究
Ordering Degree Regulation of Pt2NiCo Intermetallics for Efficient Oxygen Reduction Reaction
摘要
Abstract
Alloying transition metals with Pt is an effective strategy for optimizing Pt-based catalysts toward the oxygen reduction reaction(ORR).Atomic ordered intermetallic compounds(IMC)provide unique electronic and geometrical effects as well as stronger intermetallic interactions due to the ordered arrangement of metal atoms,thus exhibiting superior electrocata-lytic activity and durability.However,quantitatively analyzing the ordering degree of IMC and exploring the correlation between the ordering degree and ORR activity remains extremely challenging.Herein,a series of ternary Pt2NiCo interme-tallic catalysts(o-Pt2NiCo)with different ordering degree were synthesized by annealing temperature modulation.Among them,the o-Pt2NiCo which annealed at 800 ℃ for two hours exhibits the highest ordering degree and the optimal ORR ac-tivity,which the mass activity of o-Pt2NiCo is 1.8 times and 2.8 times higher than that of disordered Pt2NiCo alloy and Pt/C.Furthermore,the o-Pt2NiCo still maintains 70.8％mass activity after 30,000 potential cycles.Additionally,the ORR activity test results for Pt2NiCo IMC with different ordering degree also provide a positive correlation between the ordering degree and ORR activity.This work provides a prospective design direction for ternary Pt-based electrocatalysts.关键词
燃料电池/氧还原反应/电催化/金属间化合物/有序度Key words
Fuel cell/Oxygen reduction reaction/Electrocatalysis/Intermetallic compound/Ordering degree引用本文复制引用
张辰浩,胡晗宇,杨竣皓,张倩,杨畅,王得丽..Pt2NiCo金属间化合物的有序度调控及电催化氧还原反应性能研究[J].电化学（中英文）,2025,31(4):12-23,12.基金项目
This work was supported by the National Natural Science Foundation(22279036)and the Innovation and Talent Recruitment Base of New Energy Chem-istry and Device(B21003). （22279036）
