Bead-like cobalt-nitrogen co-doped carbon nanocage/carbon nanofiber composite:A high-performance oxygen reduction electrocatalyst for zinc-air batteries
作者机构：State Center for International Cooperation on Designer Low-carbon and Environmental Materials(CDLCEM)School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China State Key Laboratory of Chemical Resource EngineeringBeijing Key Laboratory of Electrochemical Process and Technology for MaterialsBeijing University of Chemical TechnologyBeijing 100029China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第1期
页 面：545-554页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：The work was supported by the National Natural Science Foundation of China(Nos.52104314,51972287,U2004172,and 51502269) Natural Science Foundation of Henan Province(No.202300410368) the Special Project of Key Research Development and Promotion of Henan Province(No.222102240084) Sponsored by Program for Science&Technology Innovation Talents in Universities of Henan Province(23HASTIT001) the Foundation for University Key Teachers of Henan Province(No.2020GGJS009)
主 题：bead-like structure carbon nanocages electrospinning technology oxygen reduction reaction zinc−air battery
摘 要：Proper regulation of metal-nitrogen carbon(M-N-C)materials derived from zeolitic imidazolate frameworks(ZIFs)is essential to enhance the oxygen reduction reaction(ORR)***,most of the reports focus on the component regulation,and the structure regulation of ZIFs-derived M-N-C materials by a simple preparation method has been barely ***,using a one-step electrospinning method with subsequent pyrolysis,we have prepared a bead-like cobalt-nitrogen co-doped carbon nanocage/carbon nanofiber(Co-N-C/CNF)composite electrocatalyst with the porous carbon nanocages arranged one by one in the highly conductive carbon *** from the fully exposed active sites and improved conductivity,the Co-NC/CNF catalyst exhibits an excellent ORR performance even surpassing the commercial Pt/C *** functional theory(DFT)results demonstrate that the CoNP-N1-C2 active sites on Co-N-C/CNF make the core contribution to the improvement of ORR ***,the zinc-air battery(ZAB)based on the Co-N-C/CNF catalyst also shows outstanding discharge *** study provides a new strategy for the preparation and structural design for ZIFs-derived M-N-C materials as efficient ORR catalysts.
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