无机材料学报2026，Vol.41Issue(6)：814-822,9.DOI:10.15541/jim20250519
原子级铁锚定氮掺杂石墨烯的双功能氧电催化性能
Bifunctional Oxygen Electrocatalytic Performance of Atomically Dispersed Fe Anchored on N-doped Graphene
摘要
Abstract
With the growing demand for efficient and environmental-friendly energy storage systems,zinc-air batteries have emerged as highly promising energy storage devices due to their high energy density,low cost,and environmental friendliness.The oxygen reduction reaction(ORR)and oxygen evolution reaction(OER),which suffer from sluggish kinetics,are critical factors limiting battery performance.Therefore,the development of high-performance and low-cost bifunctional oxygen electrocatalysts is of great significance.In this work,Fe single atoms/clusters anchored graphene hybrid catalysts(Fe-N/Gra)were prepared via a ball-milling assisted pyrolysis method.A series of Fe-N/Gra catalysts were obtained by adjusting the mass ratio of the metal phthalocyanine precursor to graphene,and their bifunctional oxygen electrocatalytic performances were systematically investigated.The results demonstrate that the loading amount of different metal phthalocyanine precursors exerts a significant influence on the catalytic performance of the catalysts.When the loading amount of iron phthalocyanine was 0.02 g,the resulting Fe-N/Gra-0.02 catalyst exhibited the optimal bifunctional catalytic activity for ORR and OER.The ORR half-wave potential reached as high as 0.911 V,and the OER overpotential was 610 mV at a current density of 10 mA·cm-2.The rechargeable zinc-air batteries assembled with this catalyst as the air electrode achieved a maximum power density of 315 mW·cm-2 and could sustain stable discharge for 210 h at 10 mA·cm-2.The excellent bifunctional oxygen catalytic activity of Fe-N/Gra-0.02 is mainly attributed to the atomically dispersed Fe-Nx active sites and the high electrical conductivity of graphene support.In addition,the agglomeration of active sites in the catalysts with excessive loading amounts is detrimental to the manifestation of their high-efficiency catalytic activity.This work provides an experimental basis for the controllable preparation of high-performance non-noble metal bifunctional oxygen catalysts and their practical applications in rechargeable zinc-air batteries.关键词
铁锚定氮掺杂石墨烯/单原子/团簇/氧还原反应/析氧反应/锌空电池Key words
iron-anchored nitrogen-doped graphene/single-atom/cluster/oxygen reduction reaction/oxygen evolution reaction/Zn-air battery分类
通用工业技术引用本文复制引用
汪加辉,刘晶晶,邱毅,王永霞,崔香枝..原子级铁锚定氮掺杂石墨烯的双功能氧电催化性能[J].无机材料学报,2026,41(6):814-822,9.基金项目
国家自然科学基金(52302084) （52302084）
中央高校基本科研业务费专项资金资助(2232025D-24)National Natural Science Foundation of China(52302084) （2232025D-24）
Fundamental Research Funds for the Central Universities(2232025D-24) （2232025D-24）
