A free-standing PAN/PMMA/rGO carbon paper as an effective interlayer for high performance lithium-sulfur batteries

Abstract

The limitations of the polysulfides shuttling and lithium dendrites have been obstacles to improve the lithium-sulfur battery technology, resulting in low active material utilization and poor cycle life. Here we report a simple modification of the traditional lithium-sulfur battery configuration to achieve high capacity with a long cycle life and high reversible rate. Great improvement was observed with a carbonized PAN/PMMA/rGO paper between the anode and the separator in the active material utilization and capacity retention. The adding of a free-standing PAN/PMMA/rGO carbon interlayer demonstrated the feasibility of enhancing the performance of lithium-sulfur batteries.