摘要
Catalysts for the oxy2n reduction reaction(ORR)are crucial for energy conversion and storage.Notably,the mumber of available active sites directly infuences the catalyst activity.A large specific surface area is conducive to the creation of more active sites on a catalyst,thereby improving its performance.Zn precursors easily decom-pose or volatilize at high temperatures,forming a structure with abundant pores,thereby facilitating nitrogen doping.A method for enhancing the ORR activity of nitrogen-doped graphdiyne(GDY)was developed by employ-ing zinc acetylacetonate as a pore-forming agent to increase the exposure of the active N sites.The as-prepared catalyst(denoted as ZnT-N-GDY,where T refers to the template)outperformed Pt/C in the ORR and maintained stable cycling over 2000 cycles in zinc-air batteries,facilitated by the increased exposure of the active N sites,especially pyridinic nitrogen.
基金
supported by the National Key Research and Development Project of China(2022YFA1204500 and 2022YFA1204501)
National Natural Science Foundation of China(No.22172090)
Strategic Priority Research Program of the Chinese Academy of Sciences(XDB0520200)
Postdoctoral Fellowship Program of CPSF(GZC20232733)
Beijing National Laboratory for Molecular Sciences(2023BMS20131).
