Molecular Perturbation of 2D Organic Modifiers on Porous Carbon Interlayer: Promoted Redox Kinetics of Polysulfides in Lithium-Sulfur Batteries

The rate performance of Li-S batteries still remains poor due to the limited redox kinetics of polysulfides (PSs). Herein, by selectively coating a set of 2-demensional (2D) organic molecules, chenodeoxycholic acid (CA), 4,4',4 '',4 '''-(porphine-5,10,15,20-tetrayl) tetrakis (benzoic acid) (TTBA), berberine chloride hydrate (BCH) and poly(diallyl dimethyl ammonium chloride) (PDDA) on honey comb-like porous carbon (HC) interlayers, respectively, the redox kinetics of PSs are remarkably enhanced in the interspace between the 2D molecules and carbon matrix, in the order of CA

Automated summary

The rate performance of Li-S batteries is improved by selectively coating a set of 2D organic molecules on honeycomb-like porous carbon interlayers to enhance the redox kinetics of polysulfides, with the order of enhancement being CA.