S nano-layer deposited on the surface of 3D carbon for high cycle-stability Li–S batteries

摘要

AbstractOwing to the high energy density and low cost, Li-S batteries are received intensive attention for the next generation energy storage devices. Due to the dissolution of intermediate Li2Sn(4??1) is retained at 0.5?C. And the nano-layer is kept after long-term cycles, which indicates the nano-layer has well structure stability and plays the role of restraining the dissolution of intermediate Li2Sn(4?Highlights?Nano-layer S is deposited on the surface of carbon.?The nano-layer morphology is kept after long-term cycles.?After 300 cycles, 98% capacity is retained of the composites cathode.?The dissolution of Li2Snis restrained by the nano-layer.]]>