Salacca peel-based porous carbon (SPPC) with high surface area (1945 m² g⁻¹) and large specific pore volume (1.68 cm³ g⁻¹) was prepared by pre-carbonization and K₂CO₃ activation method. Based on the TGA results, it can be estimated that up to 70 wt% of sulfur-active materials could be infiltrated into the pores of SPPC to form SPPC/S composite cathode for LiS battery. The porous structure of SPPC could act as a buffer layer against volume expansion and minimize the shuttle effect due to the penetration of intermediate polysulfides during cycle tests. Optimization on sulfur loading (50, 60 and 70 wt%) in SPPCC/S composite was also investigated. It was found that the SPPC/S composites with 60 wt% of sulfur loading had the best electrochemical performances. With 60 wt% of sulfur loading, SPPC/S composite electrodes showed excellent electrochemical performances in terms of high initial specific discharge capacity of 1006 mAh g⁻¹ at 0.5 C and capacity retention of 71% until the 100th cycle. For both cases of low and high sulfur loading, they caused much worse electrochemical performances. Based on the experimental results, it can be concluded that porous carbons derived from the salacca peel were promising materials for sulfur loading in LiS battery.

中文翻译：

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用K 2 CO 3活化法制备Salacca果皮基多孔碳作为LiS电池正极材料

小号alacca剥离基于多孔碳（SPPC）具有高表面积（1945米² 克^-1）和大的比孔体积（1.68厘米³ 克^-1）的制备是通过预碳化和K ₂ CO ₃激活方法。基于TGA结果，可以估计多达70重量％的硫活性材料可以渗透到SPPC的孔中以形成用于LiS电池的SPPC / S复合阴极。SPPC的多孔结构可以充当缓冲层，防止体积膨胀，并且由于在循环测试过程中中间多硫化物的渗透而使穿梭效应最小化。还研究了SPPCC / S复合材料中硫载量（50、60和70 wt％）的优化。发现硫含量为60重量％的SPPC / S复合材料具有最佳的电化学性能。在硫含量为60 wt％的情况下，SPPC / S复合电极在1006 mAh g ^-1的高初始比放电容量方面表现出出色的电化学性能直到第100次循环时，温度为0.5 C，容量保持率为71％。对于低硫负荷和高硫负荷的情况，它们都导致电化学性能变差。根据实验结果，可以得出结论，来自salacca果皮的多孔碳是用于锂电池中硫负载的有前途的材料。