Oxygen-enriched carbon nanotubes as a bifunctional catalyst promote the oxygen reduction/evolution reactions in Li-O(2 )batteries

doi:10.1016/j.carbon.2018.10.025

	Oxygen-enriched carbon nanotubes as a bifunctional catalyst promote the oxygen reduction/evolution reactions in Li-O(2 )batteries
	Lv, Wei 1; Kang, Feiyu 1; Zhai, Dengyun 1; Yang, Quan-Hong 3; Qin, Lei 1; Wei, Wei 2
刊名	CARBON
	2019
卷号	141 页码:561-567
ISSN号	0008-6223
DOI	10.1016/j.carbon.2018.10.025
通讯作者	Zhai, Dengyun(zhaidy0404@sz.tsinghua.edu.cn) ; Yang, Quan-Hong(qhyangcn@tju.edu.cn)
英文摘要	The aprotic lithium-oxygen (Li-O-2) batteries based on carbon-based oxygen cathodes usually suffer from low round-trip efficiency. Here we adopt oxygen-enriched carbon nanotubes (CNTs) by acid etching treatment as the cathode, in which a low voltage plateau at similar to 3.5 V during charge is exhibited and the initial round-trip efficiency is increased from 69.9% to 76.0%. An optimized integration of electrocatalytic property and electrical conductivity is crucial for the oxidized CNTs cathode to enhance the capacity and cycling performance. In particular, the surface oxygen groups can facilitate the electrocatalysis of O-2 with the enhanced oxygen reduction reaction activity and induce defective lithium peroxide (Li-O-2 ) formation due to their preferential adsorption of O-2 on the oxidized CNTs. Compared to the high crystalline Li-O-2 toroids, the defective Li-O-2 with poor crystallinity could be decomposed at a lower charge potential, contributing to the enhanced round-trip efficiency of Li-O(2 )batteries. (C) 2018 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[51772167] ; National Basic Research Program of China[2014CB932400] ; Shenzhen Basic Research Project[JCYJ20150529164918734] ; Shenzhen Basic Research Project[JCYJ20170412171311288] ; Shenzhen Basic Research Project[JCYJ20170817162443934]
WOS关键词	FUNCTIONAL-GROUPS ; LITHIUM ; GRAPHENE ; PERFORMANCE ; REDUCTION ; BATTERY ; LI2O2 ; ELECTRODES ; CATHODE
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000450312600058
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; Shenzhen Basic Research Project ; Shenzhen Basic Research Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; Shenzhen Basic Research Project ; Shenzhen Basic Research Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; Shenzhen Basic Research Project ; Shenzhen Basic Research Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; Shenzhen Basic Research Project ; Shenzhen Basic Research Project
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/166536]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Zhai, Dengyun; Yang, Quan-Hong
作者单位	1.Tsinghua Univ, Shenzhen Key Lab Graphene Based Mat, Engn Lab Functionalized Carbon Mat, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China 2.Chinese Acad Sci, Div Fuel Cell & Battery, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Tianjin Univ, Nanoyang Grp, State Key Lab Chem Engn, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Lv, Wei,Kang, Feiyu,Zhai, Dengyun,et al. Oxygen-enriched carbon nanotubes as a bifunctional catalyst promote the oxygen reduction/evolution reactions in Li-O(2 )batteries[J]. CARBON,2019,141:561-567.
APA	Lv, Wei,Kang, Feiyu,Zhai, Dengyun,Yang, Quan-Hong,Qin, Lei,&Wei, Wei.(2019).Oxygen-enriched carbon nanotubes as a bifunctional catalyst promote the oxygen reduction/evolution reactions in Li-O(2 )batteries.CARBON,141,561-567.
MLA	Lv, Wei,et al."Oxygen-enriched carbon nanotubes as a bifunctional catalyst promote the oxygen reduction/evolution reactions in Li-O(2 )batteries".CARBON 141(2019):561-567.