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dc.contributor.authorSun, Hui
dc.contributor.authorXu, Gui-Liang
dc.contributor.authorXu, Yue-Feng
dc.contributor.authorSun, Shi-Gang
dc.contributor.author孙世刚
dc.contributor.authorZhang, Xinfeng
dc.contributor.authorQiu, Yongcai
dc.contributor.authorYang, Shihe
dc.date.accessioned2013-01-14T03:00:54Z
dc.date.available2013-01-14T03:00:54Z
dc.date.issued2012-10
dc.identifier.citationNANO RESEARCH,2012,5(10):726-738zh_CN
dc.identifier.issn1998-0124
dc.identifier.urihttp://dx.doi.org/10.1007/s12274-012-0257-7
dc.identifier.uriWOS:000310087400007
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/14519
dc.description.abstractSulfur-reduced graphene oxide composite (SGC) materials with uniformly dispersed sulfur on reduced graphene oxide sheets have been prepared by a simple aqueous one-pot synthesis method, in which the formation of the composite is achieved through the simultaneous oxidation of sulfide and reduction of graphene oxide. The synthesis process has been tracked ex situ by X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) spectroscopy, which both confirm that the majority of graphene oxide has been reduced during the synthesis reaction. The sulfur contents in the SGC, determined by thermogravimetry and elementary analysis, have been adjusted in the range from 20.9 to 72.5 wt.%. Scanning electron microscope (SEM) and transmission electron microscope (TEM) images reveal that most of the sulfur is uniformly dispersed on the reduced graphene oxide sheets, for which no sulfur in particulate form could be observed. The SGC materials have been tested as the cathode of rechargeable lithium-sulfur (Li-S) batteries, and demonstrated a high reversible capacity and good cycleability. The SGC-63.6%S can deliver a reversible capacity as high as 804 mA center dot h/g after 80 cycles of charge/discharge at a current density of 312 mA/g (ca. 0.186 C), and 440 mA center dot h/g after 500 cycles at 1250 mA/g (ca. 0.75 C).zh_CN
dc.description.sponsorshipNSFC/HK-RGC Joint Research Scheme [N_HKUST609/09]; NSFC [20931160426]zh_CN
dc.language.isoenzh_CN
dc.publisherTSINGHUA UNIV PRESSzh_CN
dc.subjectSulfurzh_CN
dc.subjectgraphenezh_CN
dc.subjectcathodezh_CN
dc.subjectLi-S rechargeable batteryzh_CN
dc.titleA composite material of uniformly dispersed sulfur on reduced graphene oxide: Aqueous one-pot synthesis, characterization and excellent performance as the cathode in rechargeable lithium-sulfur batterieszh_CN
dc.typeArticlezh_CN


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