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Identification of the optimal doping position of hetero-atoms in chalcogen-doped Fe-N-C catalysts for oxygen reduction reaction

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Particuology 2024年第6期89卷 99-108页

作者： Weihao Liu Huanhuan He Qingtao Liu Xin Wan Jianglan Shui School of Materials Science and Engineering Beihang UniversityBeijing100191China School of Space and Environment Beihang UniversityBeijing102206China Tianmushan Laboratory Hangzhou310023China

The excellent oxygen reduction reaction(ORR)activity of Fe–N–C catalysts in acidic media makes them potential for low-cost proton exchange membrane fuel *** recent years,it has been shown that heteroatoms(B,O,S,P,Cl,F,etc.)can be used as electron-withdrawing groups to modulate the planar structure and electron distribution of the Fe–Nx active sites to achieve simultaneous improvement of catalytic activity and ***,the optimal location of the heteroatoms remains ***,taking chalcogen heteroatoms(S and Se)as an example,we control the doping positions and investigate their effect on the ORR performance of the Fe–N–C *** first coordination shell of the iron single atom is identified as the optimal doping *** optimized catalysts Fe–N_(3)Se_(1)/NC and Fe–N_(3)Se_(1)/NC demonstrate improved activity and stability in both half cells and fuel *** work provides insights into the enhancement mechanism of heteroatom doping in single-atom catalysts.

关键词： Oxygen reduction reaction Fe-N-C catalysts hetero-atom doping doping position Enhancement mechanism

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heteroatom Doped Graphdiyne and Analogues:Synthesis,Structures and Applications

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Chemical Research in Chinese Universities 2021年第6期37卷 1213-1223页

作者： MAN Yixiao ZHAO Jinyu LIU Shipeng PAN Qingyan ZHAO Yingjie College of Polymer Science and Engineering Qingdao University of Science and TechnologyQingdao266042P.R.China

As a new carbon allotrope,graphdiyne(GDY)has shown intensive practical application prospects in the energy field,catalysis,gas separation,etc.,due to its unique 2Dπ-conjugated structure,rich sp-hybridized carbon atoms and semiconductor *** efforts have been made to the development of well-defined GDY materials in recent *** doping heteroatoms can further tune the structures,semiconductor properties of GDY,and expand the promising *** review summarized a comprehensive development of heteroatom doped GDYs,including their synthesis,structures,properties,applications in nanotechnology,as well as the forecast in the future.

关键词： Graphdiyne Carbon material 2D material hetero-atom doping

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