论文部分内容阅读
In this context,we firstly synthesized a novel nitrogen-doped multiporous carbon material from renewable biological cells through a facile chemical activation with K_2CO_3.After sulfur impregnation,the carbon/sulfur composite achieved a sulfur content of about 67 wt%.The C/S composite as the cathode of lithium-sulfur batteries exhibited a discharge capacity of 1410 mAh/g and good capacity retention of912 mAh/g at 0.1C.These outstanding results were attributed to the synergy effect of microporous carbon and natural doping nitrogen atoms.We believe that the facile approach for the synthesis of nitrogen-doped multiporous carbon from the low-cost and sustainable biological resources will not only be applied in lithium-sulfur batteries,but also in other electrode materials.
In this context, we formed synthesized a novel nitrogen-doped multiporous carbon material from renewable biological cells through a facile chemical activation with K_2CO_3.After sulfur impregnation, the carbon / sulfur composite achieved a sulfur content of about 67 wt%. The C / S composite as the cathode of lithium-sulfur batteries exhibited a discharge capacity of 1410 mAh / g and good capacity retention of 912 mAh / g at 0.1C. These outstanding results were attributed to the synergy effect of microporous carbon and natural doping nitrogen atoms. We believe that the facile approach for the synthesis of nitrogen-doped multiporous carbon from the low-cost and sustainable biological resources will not only be applied in lithium-sulfur batteries, but also in other electrode materials.