Stable confinement of Fe/Fe3C in Fe, N-codoped carbon nanotube towards robust zinc-air batteries

doi:10.1016/j.cclet.2020.08.0291001-8417/

	Stable confinement of Fe/Fe3C in Fe, N-codoped carbon nanotube towards robust zinc-air batteries
	Zong, Lingbo 3; Chen, Xin 3; Dou, Shuming 1; Fan, Kaicai 4; Wang, Zumin 2; Zhang, Wenjun 3; Du, Yunmei 3; Xu, Jie 1; Jia, Xiaofei 3; Zhang, Qi 3
刊名	CHINESE CHEMICAL LETTERS
	2021-03-01
卷号	32 期号:3 页码:1121-1126
关键词	Patial confinement Nonprecious metal Bifunctional Oxygen electrocatalyst Synergistic effect Zn-air batterie
ISSN号	1001-8417
DOI	10.1016/j.cclet.2020.08.0291001-8417/
英文摘要	Catalytic oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) have garnered great attention as the key character in metal-air batteries. Herein, we developed a superior nonprecious bifunctional oxygen electrocatalyst, fabricated through spatial confinement of Fe/Fe3C nanocrystals in pyridinic N and Fe-N-x rich carbon nanotubes (Fe/Fe3C-N-CNTs). During ORR, the resultant electrocatalyst exhibits positive onset potential of 1.0 V (vs. RHE), large half-wave potentials of 0.88 V (vs. RHE), which is more positive than Pt/C (0.98 V and 0.83 V, respectively). Remarkably, Fe/Fe3C- N-CNTs exhibits outstanding durability and great methanol tolerance, exceeding Pt/C and most reported nonprecious metal-based oxygen reduction electrocatalysts. Moreover, Fe/Fe3C-N-CNTs show a markedly low potential at j =10 mA/cm(2), small Tafel slopes and extremely high stability for OER. Impressively, the Fe/ Fe3C-N-CNTs-based Zn-air batteries demonstrate high power density of 183 mW/cm(2) and robust charge/ discharge stability. It is revealed that the spatial confinement effect can impede the aggregation and corrosion of Fe/Fe3C nanocrystals. Meanwhile, Fe/Fe3C and Fe-N-x play synergistic effect on boosting the ORR/OER activity, which provides an important guideline for construction of inexpensive nonprecious metal-carbon hybrid nanomaterials. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[51702180] ; National Natural Science Foundation of China[21703116] ; National Natural Science Foundation of China[91963113] ; National Natural Science Foundation of China[51372127] ; Scientific and Technical Development Project of Qingdao, China[18-2-2-52-jch] ; Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology
WOS关键词	OXYGEN REDUCTION REACTION ; DOPED CARBON ; BIFUNCTIONAL ELECTROCATALYST ; EVOLUTION ; IRON ; NANOPARTICLES ; ALKALINE ; COBALT ; SITES ; ATOMS
WOS研究方向	Chemistry
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000642399500004
资助机构	National Natural Science Foundation of China ; Scientific and Technical Development Project of Qingdao, China ; Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/48756]
专题	中国科学院过程工程研究所
通讯作者	Fan, Kaicai; Chen, Yanan
作者单位	1.Tianjin Univ, Tianjin Key Lab Composite & Funct Mat, Sch Mat Sci & Engn, Key Lab Adv Ceram & Machining Technol,Minist Educ, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 3.Qingdao Univ Sci & Technol, Coll Chem & Mol Engn,MOE, State Key Lab Ecochem Engn,Key Lab Opt Elect Sens, Taishan Scholar Adv & Characterist Discipline Tea, Qingdao 266042, Peoples R China 4.Griffith Univ, Ctr Clean Environm & Energy, Sch Environm & Sci, Southport, Qld 4222, Australia
推荐引用方式 GB/T 7714	Zong, Lingbo,Chen, Xin,Dou, Shuming,et al. Stable confinement of Fe/Fe3C in Fe, N-codoped carbon nanotube towards robust zinc-air batteries[J]. CHINESE CHEMICAL LETTERS,2021,32(3):1121-1126.
APA	Zong, Lingbo.,Chen, Xin.,Dou, Shuming.,Fan, Kaicai.,Wang, Zumin.,...&Wang, Lei.(2021).Stable confinement of Fe/Fe3C in Fe, N-codoped carbon nanotube towards robust zinc-air batteries.CHINESE CHEMICAL LETTERS,32(3),1121-1126.
MLA	Zong, Lingbo,et al."Stable confinement of Fe/Fe3C in Fe, N-codoped carbon nanotube towards robust zinc-air batteries".CHINESE CHEMICAL LETTERS 32.3(2021):1121-1126.