Synergistic Overview and Perspectives of Two-Dimensional Heterostructures for Cathodes and Separators in Flexible Li–S Batteries

Abstract

Because of their high energy densities and specific capacities, lithium–sulfur (Li–S) batteries have recently received an extensive amount of research. The best way to boost battery performance is by altering the electrode materials. The adoption of 2D material-based heterostructures has attracted significant attention for increasing electrochemical performance and preventing the shuttle effect. Therefore, a summary of the link between the specific properties of 2D material heterostructures and electrochemical performance is required for the development of next-generation Li–S batteries. The present research focuses on the latest developments that boost the performance of Li–S batteries by using the unique features of 2D material heterostructures. This evaluation also categorizes several meticulously selected 2D materials with specific properties. Some solutions have been developed to overcome the difficulties of insulating intermediates, polysulfide shuttle, and sluggish kinetics. Superior conductivity, tunable functional groups, and exceptional flexibility are some of the most crucial elements in boosting electrochemical performance.

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