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    • FeS under wrinkled thin-layer carbon derived from ionic liquid as a high-performance sodium-ion battery anode material

    离子液体衍生的褶皱薄层碳下的FeS作为高性能钠离子电池负极材料

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    出版日期： 2021
    标签： FeS/C Ionic liquid Carbon layer SIBs

    出版日期:2021


    杂志名称:Journal of Electroanalytical Chemistry
    卷号:886
    期数:Complete
    刊号:1572-6657
    出版日期:2021

    简介:FeSisapromisinganodematerialwithhightheoreticalcapacityinsodium-ionbatteries(SIBs).Unfortunately,theunstablestructureandpoorconductivityofFeSlimititscommercialapplications.Herein,FeScoatedbywrinkledthinlayersofcarbon(FeS/C)issynthesizedbyusingasimplepyrolysisstrategy.Thewrinkledcarbonlayers,whichderivedfromionicliquids,effectivelyimprovetheconductivityandstructuralstabilityofFeS.WhenemployedasanodeinSIBs,FeS/Cexhibitshighcapacity,longcyclelife,andexcellentstability.Specifically,whenthecurrentdensityis0.1Ag?1and0.5Ag?1,thereversiblecapacityofFeS/Creaches404.7mAhg?1and304.8mAhg?1after100cycles.Whenthecurrentdensityincreasesto4Ag?1,thesodiumstoragecanmaintainacapacityof178.8mAhg?1after1000cycles.Theexcellentelectrochemicalperformancecanbeattributedtothewrinkledcarbonlayersthatenhancethestructuralstabilityandchargemobility.

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