Preparation and lithium storage properties of Sb2S3/graphite composites based on stibnite
Using natural stibnite and natural graphite as raw materials,Sb2S3/graphite composites with different proportions of stibnite were prepared by auxiliary ball milling method.The structure,composition and morphology of the composites were characterized by X-ray diffraction(XRD),Raman spectroscopy,scanning electron microscopy(SEM)and transmission electron microscopy(TEM),respectively.Composites of Sb2S3/BG at different ratios were employed as negative electrode for lithium-ion batteries,and their electrochemical properties were evaluated in button batteries.The results show that the cyclic stability of Sb2S3/BG composites improves with increasing natural graphite content,maintaining high reversibility during prolonged cycling.Among them,Sb2S3/BG(mass ratio:1:1)composite still retains a discharge specific capacity of 351 mA·h·g-1 after 110 cycles at a current density of 1 A·g-1,achieving a capacity retention rate of 52％.
natural stibnitenatural graphitelithium-ion batterieshigh specific capacity negative electrodeelectrochemical performance
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