A novel lithium/sulfur battery based on sulfur/graphene nanosheet composite cathode and gel polymer electrolyte

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dc.contributor.authorZhang, Yongguang
dc.contributor.authorZhao, Yan
dc.contributor.authorBakenov, Zhumabay
dc.date.accessioned2015-12-02T08:47:32Z
dc.date.available2015-12-02T08:47:32Z
dc.date.issued2014
dc.description.abstractA novel sulfur/graphene nanosheet (S/GNS) composite was prepared via a simple ball milling of sulfur with commercial multi-layer graphene nanosheet, followed by a heat treatment. High-resolution transmission and scanning electronic microscopy observations showed the formation of irregularly interlaced nanosheet-like structure consisting of graphene with uniform sulfur coating on its surface. The electrochemical properties of the resulting composite cathode were investigated in a lithium cell with a gel polymer electrolyte (GPE) prepared by trapping 1 mol dm−3 solution of lithium bistrifluoromethanesulfonamide in tetraethylene glycol dimethyl ether in a polymer matrix composed of poly(vinylidene fluoride-co-hexafluoropropylene)/poly(methylmethacrylate)/silicon dioxide (PVDF-HFP/PMMA/SiO2). The GPE battery delivered reversible discharge capacities of 809 and 413 mAh g−1 at the 1st and 50th cycles at 0.2C, respectively, along with a high coulombic efficiency over 50 cycles. This performance enhancement of the cell was attributed to the suppression of the polysulfide shuttle effect by a collective effect of S/GNS composite cathode and GPE, providing a higher sulfur utilization.ru_RU
dc.identifier.citationZhang Yongguang., Zhao Yan., Bakenov Zhumabay., 2014, A novel lithium/sulfur battery based on sulfur/graphene nanosheet composite cathode and gel polymer electrolyte, Nanoscale Research Letters, doi:10.1186/1556-276X-9-137ru_RU
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/837
dc.language.isoenru_RU
dc.publisherNanoscale Research Letters., http://www.nanoscalereslett.com/content/9/1/137ru_RU
dc.subjectgraphene nanosheetru_RU
dc.subjectlithium/sulfur batteryru_RU
dc.subjectnanostructured sulfur cathoderu_RU
dc.subjectgel polymer electrolyteru_RU
dc.subjectsilicon dioxideru_RU
dc.subjectpolymer matrixru_RU
dc.titleA novel lithium/sulfur battery based on sulfur/graphene nanosheet composite cathode and gel polymer electrolyteru_RU
dc.typeArticleru_RU

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