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Enhancing the Performance of CoO as Cathode Catalyst for Li-O-2 Batteries through Confinement into Bimodal Mesoporous Carbon
Zhang, Xiuling; Gao, Rui; Li, Zhengyao; Hu, Zhongbo; Liu, Hongyang; Liu, Xiangfeng; Liu, XF (reprint author), Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China.; Liu, HY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
2016-05-20
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume201Pages:134-141
AbstractRechargeable Li-O-2 batteries show great potential owing to the super high energy density. However, the poor kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) limits their practical application. The exploration of noble metals-free cathode catalysts with high catalytic activity on both ORR and OER is still a big challenge. Herein, CoO has been confined into bimodal mesoporous carbon frameworks (CoO@BMC) via a wet-chemistry impregnation approach and the performance of CoO@BMC as cathode catalyst for Li-O-2 batteries has been largely improved. For comparison, CoO@CMK-3 composite has also been prepared. In comparison with bulk CoO, BMC and CoO@CMK-3, CoO@BMC based cathode shows a higher initial capacity (similar to 4000 mA hg(-1)), much higher cycling stability, higher rate capability and lower overpotential, which can be largely attributed to the synergetic effect of CoO and hierarchical BMC on both ORR and OER. In addition, the formation and decomposition of Li2O2 and side products in the process of ORR and OER have also been analyzed and the results indicate that CoO@BMC nanocomposite can efficiently promote the decomposition of Li2O2 and even some side products of carbonates. (C) 2016 Elsevier Ltd. All rights reserved.
description.department[zhang, xiuling ; gao, rui ; li, zhengyao ; hu, zhongbo ; liu, xiangfeng] univ chinese acad sci, coll mat sci & optoelect technol, beijing 100049, peoples r china ; [liu, hongyang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
KeywordLithium-o-2 Battery Bimodal Mesoporous Carbon Coo Electrocatalyst Electrochemical Performance
Subject AreaElectrochemistry
Funding OrganizationNational Natural Science Foundation of China [11575192]; State Key Project of Fundamental Research of Ministry of Science and Technology of the People's Republic of China [2012CB932504, 2014CB931900]; "Hundred Talents Project" of the Chinese Academy of Sciences
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75869
Collection中国科学院金属研究所
Corresponding AuthorLiu, XF (reprint author), Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China.; Liu, HY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, Xiuling,Gao, Rui,Li, Zhengyao,et al. Enhancing the Performance of CoO as Cathode Catalyst for Li-O-2 Batteries through Confinement into Bimodal Mesoporous Carbon[J]. ELECTROCHIMICA ACTA,2016,201:134-141.
APA Zhang, Xiuling.,Gao, Rui.,Li, Zhengyao.,Hu, Zhongbo.,Liu, Hongyang.,...&Liu, HY .(2016).Enhancing the Performance of CoO as Cathode Catalyst for Li-O-2 Batteries through Confinement into Bimodal Mesoporous Carbon.ELECTROCHIMICA ACTA,201,134-141.
MLA Zhang, Xiuling,et al."Enhancing the Performance of CoO as Cathode Catalyst for Li-O-2 Batteries through Confinement into Bimodal Mesoporous Carbon".ELECTROCHIMICA ACTA 201(2016):134-141.
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