In this paper, the synthesis of the three-dimensional (3D) composite of spherical reduced graphene oxide (RGO) with uniformly distributed CeO2 particles is reported. This synthesis is done via a facile and large-scalable spray-drying process, and the CeO2/RGO materials are hydrothermally compounded with sulfur. The morphology, composition, structure, and electrochemical properties of the 3D S/CeO2/RGO composite are studied using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), thermal gravimetric analysis (TGA), Raman spectra and X-ray photoelectron spectroscopy (XPS), etc. The electrochemical performance of the composites as electrodes for lithium–sulfur batteries is evaluated. The S/CeO2/RGO composites deliver a high initial capacity of 1054 mAh g−1, and retain a reversible capacity of 792 mAh g−1 after 200 cycles at 0.1 C. Profiting from the combined effect of CeO2 and RGO, the CeO2/RGO materials effectively inhibit the dissolution of polysulfides, and the coating of spherical RGO improves the structural stability as well as conductivity.

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sceo2rgo spherical rgo reversible structural thermal gravimetric analysis transmission electron microscopy ceo2rgo scanning electron microscope raman spectra lithiumndashsulfur batteries 3d composite electrodes ceo2 particles electrochemical dissolution of polysulfides xray photoelectron spectroscopy composition structure facile and largescalable spraydrying process coating spherical reduced graphene oxide

Qiuyan Hao,Guoliang Cui,Yuan Tian,Taizhe Tan,Yongguang Zhang,.Three-Dimensional S/CeO2/RGO Composites as Cathode Materials for Lithium–Sulfur Batteries. 11 (9),.

Qiuyan Hao,Guoliang Cui,Yuan Tian,Taizhe Tan,Yongguang Zhang,"Three-Dimensional S/CeO2/RGO Composites as Cathode Materials for Lithium–Sulfur Batteries" 11

Qiuyan Hao,Guoliang Cui,Yuan Tian,Taizhe Tan,Yongguang Zhang,"Three-Dimensional S/CeO2/RGO Composites as Cathode Materials for Lithium–Sulfur Batteries"