Tuning the morphology of sulfur-few layer graphene composites via liquid phase evaporation for battery application.

ABSTRACT: A comparative study on sulfur-based composite electrodes comprising different few-layer graphene contents prepared via a facile evaporation method is presented here. The active material production process employed here, exploring different sulfur-few layer graphene ratios, enabled tuning and optimization of the sample morphology, as confirmed via a scanning electron microscopy study. The results reveal that the graphene content is a crucial parameter yielding an optimized morphology of spherical particles composed of an elemental sulfur inner core covered by the carbonaceous compound. The electrodes are characterized in lithium metal half-cells in terms of cyclic voltammetry, galvanostatic cycling tests, rate capability and electrochemical impedance spectroscopy. Moreover, th

SUBMITTER: Venezia E 

PROVIDER: S-EPMC9418723 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature