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Ultrathin MnO2 nanoflakes grown on N-doped carbon nanoboxes for high-energy asymmetric supercapacitors

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dc.title Ultrathin MnO2 nanoflakes grown on N-doped carbon nanoboxes for high-energy asymmetric supercapacitors en
dc.contributor.author Dai, Yihui
dc.contributor.author Chen, Ling
dc.contributor.author Babayan, Vladimír Artur
dc.contributor.author Cheng, Qilin
dc.contributor.author Sáha, Petr
dc.contributor.author Jiang, Hao
dc.contributor.author Li, Chunzhong
dc.relation.ispartof Journal of Materials Chemistry A
dc.identifier.issn 2050-7488 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2015
utb.relation.volume 3
utb.relation.issue 42
dc.citation.spage 21337
dc.citation.epage 21342
dc.type article
dc.language.iso en
dc.publisher Royal Society of Chemistry (RSC)
dc.identifier.doi 10.1039/c5ta06958k
dc.relation.uri http://pubs.rsc.org/en/Content/ArticleLanding/2015/TA/C5TA06958K#!divAbstract
dc.description.abstract We demonstrate the synthesis of ultrathin MnO2 nanoflakes grown on N-doped carbon nanoboxes, forming an impressive hierarchical MnO2/C nanobox hybrid with an average size of 500 nm, which exhibits an excellent electrochemical performance due to the unique structure, N-doping and strong synergistic effects between them. In addition, we also assembled a green asymmetric supercapacitor (ASC) using the as-synthesized MnO2/C nanoboxes as a positive electrode and the corresponding N-doped carbon nanoboxes as a negative electrode in a neutral aqueous electrolyte, aiming to further enhance its energy density by extending the operating potential. More significantly, our ASC device is able to reversibly cycle within a wide operating voltage of 2.0 V and delivers a maximum energy density of 39.5 W h kg-1 with superior cycling stability (∼90.2% capacitance retention after 5000 cycles). These intriguing results show that hollow nanostructures will be promising electrode materials for advanced supercapacitors. © The Royal Society of Chemistry 2015. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1005739
utb.identifier.rivid RIV/70883521:28610/15:43873175!RIV16-MSM-28610___
utb.identifier.obdid 43873606
utb.identifier.scopus 2-s2.0-84945275842
utb.identifier.wok 000363163200060
utb.identifier.coden JMCAE
utb.source j-wok
dc.date.accessioned 2015-12-03T09:30:51Z
dc.date.available 2015-12-03T09:30:51Z
dc.description.sponsorship 21206043, NSFC, National Natural Science Foundation of China; 21236003, NSFC, National Natural Science Foundation of China; 21371057, NSFC, National Natural Science Foundation of China
dc.description.sponsorship National Natural Science Foundation of China [21206043, 21236003, 21371057]; Basic Research Program of Shanghai [13NM1400801]; International Science and Technology Cooperation Program of China [2015DFA51220]; 111 Project [B14018]; Fundamental Research Funds for the Central Universities; Ministry of Education, Youth and Sports of the Czech Republic - Program NPU I [LO1504]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Babayan, Vladimír Artur
utb.contributor.internalauthor Sáha, Petr
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