A Co3O4@MnO2/Ni nanocomposite as a carbon- and binder-free cathode for rechargeable Li-O2 batteries

NCUIR > College of Earth Sciences > Department of Atmospheric Sciences > journal & Dissertation > Item 987654321/100775

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Title:	A Co3O4@MnO2/Ni nanocomposite as a carbon- and binder-free cathode for rechargeable Li-O2 batteries
Authors:	鄭芳怡;Han, Xiaopeng;Cheng, Fangyi;Chen, Chengcheng;Li, Fujun;Chen, Jun
Contributors:	地球科學學院大氣科學學系
Date:	2016-06-01
Issue Date:	2026-04-21 14:13:40 (UTC+8)
Publisher:	Royal Society of Chemistry
Abstract:	摘要： Rational design and synthesis of cathode catalysts are crucial for enhancing the performance of rechargeable Li–O 2 batteries. Here, we report a controlled synthesis of the nanocomposite, Co 3 O 4 nanohorns coated with MnO 2 nanosheets on a Ni foam (Co 3 O 4 MnO 2 /Ni). It integrates the catalytic activities of oxygen reduction and oxygen evolution reactions and functions as a carbon- and binder-free cathode catalyst for rechargeable Li–O 2 batteries. This nanocomposite catalyst presents a small discharge/charge voltage gap of 0.76 V (a low polarization) and a long cycle life of 170 cycles at 300 mA g −1 , coupled with an ionic liquid-based electrolyte, 0.5 M lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) in 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (EMITFSI), which are much better than those based on the individual Co 3 O 4 and MnO 2 cathodes. The enhanced electrochemical performance is ascribed to the integrated bifunctional catalytic activities and the porous micro/nanostructure of the Co 3 O 4 MnO 2 /Ni nanocomposite, as well as the ionic liquid-based electrolyte, indicating its promising application in rechargeable Li–O 2 batteries. 出版日期： 2016 出處： Inorganic chemistry frontiers, 2016, Vol.3 (6), p.866-871 資源來源： Royal Society of Chemistry 識別號： ISSN: 2052-1553 識別號： EISSN: 2052-1553 識別號： DOI: 10.1039/C6QI00066E
Appears in Collections:	[Department of Atmospheric Sciences] journal & Dissertation

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