Advanced engineering strategies for Li₂S cathodes in lithium–sulfur batteries

Abstract

This review comprehensively explores the diverse strategies of Li2S engineering and examines potential avenues for enhancing structural stability and electrochemical performance.

Synergistic design of g-C3N4-supported CNTs: experimental and DFT insights for enhanced electrochemical performance in flexible Li–S batteries

“…Recently, cathode hosts with strong physical and chemical interactions toward LiPSs have improved capacity retention by suppressing the shuttle phenomenon and improving redox kinetics. 13,14 A template-based method was employed to synthesize a composite host of macro/mesoporous carbon and defective TiO 2 nanoparticles, showcasing a high capacity (1420 mA h g −1 at 0.2C) and cycling ability (65.6% retention at 0.2C over 60 cycles). 15 Additionally, tin disulde (SnS 2 ) nanosheets were anchored onto nitrogen-doped hollow carbon with mesoporous shells, forming a bipolar dynamic host with a capacity of 947.4 mA h g −1 at 0.2C.…”

“…12 Additionally, the substantial volume expansion (∼80%) during cycling causes structural collapse and significantly reduces cathode activity. 13 Addressing these challenges requires the design of suitable S-hosting materials to enhance cathode conductivity and limit polysulfide dissolution.…”