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Three-dimensional iron sulfide-carbon interlocked graphene composites for high-performance sodium-ion storage

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dc.contributor.author Huang, Wei
dc.contributor.author Sun, Hongyu
dc.contributor.author Shangguan, Huihui
dc.contributor.author Cao, Xianyi
dc.contributor.author Xiao, Xinxin
dc.contributor.author Shen, Fei
dc.contributor.author Mølhave, Kristian
dc.contributor.author Ci, Lijie
dc.contributor.author Si, Pengchao
dc.contributor.author Zhang, Jingdong
dc.date.accessioned 2018-05-18T13:57:50Z
dc.date.issued 2018
dc.identifier.uri http://hdl.handle.net/10344/6851
dc.description peer-reviewed en_US
dc.description.abstract Three-dimensional (3D) carbon-wrapped iron sulfide interlocked graphene (Fe7S8@C-G) composites for high-performance sodium-ion storage are designed and produced through electrostatic interaction and subsequent sulfurization. The ironbased metal-organic frameworks (MOFs, MIL-88-Fe) interact with graphene oxide sheets to form 3D networks, and carbon-wrapped iron sulfide (Fe7S8@C) nanoparticles with high individual-particle conductivity are prepared following a sulfurization process, surrounded by interlocked graphene sheets to enhance the interparticle conductivity. The prepared Fe7S8@C-G composites not only have the improved individual-particle and interparticle conductivity to shorten electron/ion diffusion pathways, but also have the enhanced structural stability to prevent the aggregation of active materials and buffer large volume charges during sodiation / desodiation. As a sodium-ion storage material, the Fe7S8@CG composites exhibit a reversible capacity of 449 mA h g-1 at 500 mA g-1 after 150 cycles and a retention capacity of 306 mA h g-1 under a current density of 2000 mA g-1. The crucial factors related to the structural changes and stability during cycles have been further investigated. These results demonstrate that the high-performance sodium-ion storage properties are mainly attributed to the unique designed three-dimensional configuration. en_US
dc.language.iso eng en_US
dc.publisher Royal Society of Chemistry en_US
dc.relation.ispartofseries Nanoscale;10, pp. 7851-7859
dc.relation.uri http://dx.doi.org/10.1039/C8NR00034D
dc.rights © 2018 Royal Society of Chemistry. Personal use of this material is permitted. Permission from Royal Society of Chemistry must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works en_US
dc.subject electrical energy storage devices en_US
dc.subject sodium ion batteries (SIBs) en_US
dc.title Three-dimensional iron sulfide-carbon interlocked graphene composites for high-performance sodium-ion storage en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1039/C8NR00034D
dc.contributor.sponsor Danish Council for Independent Research en_US
dc.contributor.sponsor China Scholarship Council en_US
dc.contributor.sponsor Shandong Provincial Science and Technology Major Project en_US
dc.relation.projectid DFT-1335-00330 en_US
dc.relation.projectid 201706220080 en_US
dc.relation.projectid 31270086963030 en_US
dc.relation.projectid 2015ZDZX11008 en_US
dc.relation.projectid 2015GGE27286 en_US
dc.relation.projectid 2016GGX104001 en_US
dc.date.embargoEndDate 2019-03-22
dc.embargo.terms 2019-03-22 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US


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