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

文献类型：期刊论文

作者Lv, Wei1; Kang, Feiyu1; Zhai, Dengyun1; Yang, Quan-Hong3; Qin, Lei1; Wei, Wei2
刊名CARBON
出版日期2019
卷号141页码:561-567
ISSN号0008-6223
DOI10.1016/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.
WOS关键词FUNCTIONAL-GROUPS ; LITHIUM ; GRAPHENE ; PERFORMANCE ; REDUCTION ; BATTERY ; LI2O2 ; ELECTRODES ; CATHODE
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研究方向Chemistry ; Materials Science
语种英语
WOS记录号WOS:000450312600058
出版者PERGAMON-ELSEVIER SCIENCE LTD
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
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.

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