文献类型：期刊文献

英文题名：A Versatile Extended Stober Approach to Monodisperse Sub-40 nm Carbon Nanospheres for Stabilizing Atomically Dispersed FeN4 Sites Toward Efficient Oxygen Reduction Electrocatalysis

作者：Lu, Tingyu[1] Zhang, Sike[1] Zhou, Qixing[1] Wang, Rui[1] Pang, Huan[2] Yang, Jun[3,4] Zhang, Mingyi[5] Xu, Lin[1] Xi, Shibo[6] Sun, Dongmei[1] Jin, Can[7] Tang, Yawen[1]

第一作者：Lu, Tingyu

通信作者：Xu, L[1];Sun, DM[1];Xi, SB[2];Jin, C[3]

机构：[1]Nanjing Normal Univ, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Peoples R China;[2]Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225009, Peoples R China;[3]Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China;[4]Chinese Acad Sci, Inst Proc Engn, Ctr Mesosci, Beijing 100190, Peoples R China;[5]Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China;[6]Agcy Sci Technol & Res, Inst Chem & Engn Sci, Singapore 627833, Singapore;[7]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat Jiangsu Prov, Nanjing 210042, Peoples R China

年份：2023

外文期刊名：SMALL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001024054900001)】；

基金：Acknowledgements T.L. and S.Z. contributed equally to this work. This work was financially supported by the National Natural Science Foundation of China (21972068, 22072067, and 22232004).

语种：英文

外文关键词：extended Stober approach; oxygen reduction reaction; single-atom catalysts; zinc-air batteries

摘要：The development of atomically dispersed iron-nitrogen-carbon (FeNC) catalysts as an alternative to precious platinum holds great potential for the substantial progress of a variety of oxygen reduction reaction (ORR)-associated energy conversion technologies. Nevertheless, the precise synthesis of FeNC single atomic catalysts (SACs) with a high density of accessible active sites and pronounced electrocatalytic performance still remains an enormous challenge. Herein, an innovative extended Stober method is designed for the controllable preparation of monodisperse small-sized N-doped carbon colloidal nanospheres (& AP;40 nm) anchoring atomically isolated FeN4 sites (abbreviated as Fe-SA@N-CNSs hereafter) with a narrow size distribution and high uniformity. Benefiting from the single FeN4 moieties and the unique spherical carbon substrate, the resultant Fe-SA@N-CNSs exhibit excellent ORR activity, outstanding long-term durability, and methanol tolerance in KOH electrolyte. More impressively, when further assembled into a flexible solid-state rechargeable zinc-air battery (ZAB), the Fe-SA@N-CNSs-driven ZAB delivers a higher open circuit voltage, a larger power density, and robust cycling/mechanical stability, outperforming the state-of-the-art Pt/C-based counterpart and further testifying the great potential of the as-prepared Fe-SA@N-CNSs in diverse ORR-related practical energy devices. The developed extended Stober method provides an efficient and versatile avenue toward the preparation of a series of well-defined SACs for diverse electrocatalytic systems.