文献类型：期刊文献

英文题名：Interfacial Engineering of CoN/Co3O4 Heterostructured Hollow Nanoparticles Embedded in N-Doped Carbon Nanowires as a Bifunctional Oxygen Electrocatalyst for Rechargeable Liquid and Flexible all-Solid-State Zn-Air Batteries

作者：Zhou, Qixing[1,2] Zhang, Sike[2] Zhou, Guangyao[3] Pang, Huan[4] Zhang, Mingyi[5] Xu, Lin[2] Sun, Kang[6] Tang, Yawen[2] Huang, Kai[1]

第一作者：Zhou, Qixing

通信作者：Huang, K[1];Xu, L[2]

机构：[1]Southeast Univ, Sch Chem & Chem Engn, Nanjing 211189, Peoples R China;[2]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;[3]Jinling Inst Technol, Coll Sci, Nanjing 211169, Peoples R China;[4]Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225009, 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]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China

年份：0

外文期刊名：SMALL

收录：;EI(收录号：20231513875852);Scopus(收录号：2-s2.0-85152040597);WOS:【SCI-EXPANDED(收录号:WOS:000961681700001)】；

基金：Q.Z. and S.Z. contributed equally to this work. This work was financially supported by National Natural Science Foundation of China (21972068 and 21875112).

语种：英文

外文关键词：bifunctional oxygen electrocatalysts; carbon nanowires; CoN; Co3O4 heterointerfaces; hollow nanoparticles; Zn-air batteries

摘要：The design of economical, efficient, and robust bifunctional oxygen electrocatalysts is greatly imperative for the large-scale commercialization of rechargeable Zn-air battery (ZAB) technology. Herein, the neoteric design of an advanced bifunctional electrocatalyst composed of CoN/Co3O4 heterojunction hollow nanoparticles in situ encapsulated in porous N-doped carbon nanowires (denoted as CoN/Co3O4 HNPs@NCNWs hereafter) is reported. The simultaneous implementation of interfacial engineering, nanoscale hollowing design, and carbon-support hybridization renders the synthesized CoN/Co3O4 HNPs@NCNWs with modified electronic structure, improved electric conductivity, enriched active sites, and shortened electron/reactant transport pathways. Density functional theory computations further demonstrate that the construction of a CoN/Co3O4 heterojunction can optimize the reaction pathways and reduce the overall reaction barriers. Thanks to the composition and architectural superiorities, the CoN/Co3O4 HNPs@NCNWs exhibit distinguished oxygen reduction reaction and oxygen evolution reaction performance with a low reversible overpotential of 0.725 V and outstanding stability in KOH medium. More encouragingly, the homemade rechargeable liquid and flexible all-solid-state ZABs utilizing CoN/Co3O4 HNPs@NCNWs as the air-cathode deliver higher peak power densities, larger specific capacities, and robust cycling stability, exceeding the commercial Pt/C + RuO2 benchmark counterparts. The concept of heterostructure-induced electronic modification herein may shed light on the rational design of advanced electrocatalysts for sustainable energy applications.