文献类型：期刊文献

英文题名：A Versatile Extended St?ber 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] Zhang, Mingyi[4] Xu, Lin[1] Xi, Shibo[5] Sun, Dongmei[1] Jin, Can[6] Tang, Yawen[1]

第一作者：Lu, Tingyu

机构：[1] Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China; [2] School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, China; [3] State Key Laboratory of Multiphase Complex Systems and Center of Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China; [4] Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, China; [5] Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research, Singapore, 627833, Singapore; [6] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Laboratory of Biomass Energy and Material of Jiangsu Province, Nanjing, 210042, China

年份：2023

外文期刊名：Small

收录：EI(收录号：20232914398527);Scopus(收录号：2-s2.0-85164731980)

语种：英文

外文关键词：Carbon - Catalyst activity - Doping (additives) - Electrocatalysis - Electrocatalysts - Electrolytes - Electrolytic reduction - Flexible electronics - Nanospheres - Open circuit voltage - Oxygen - Oxygen reduction reaction - Potassium hydroxide - Sols - Zinc

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 St?ber method is designed for the controllable preparation of monodisperse small-sized N-doped carbon colloidal nanospheres (≈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 St?ber method provides an efficient and versatile avenue toward the preparation of a series of well-defined SACs for diverse electrocatalytic systems. ? 2023 Wiley-VCH GmbH.