Research Article Cite This: ACS Appl. Mater. Interfaces XXXX, XXX, XXX−XXX
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Efficient Encapsulation of Small S2‑4 Molecules in MOF-Derived Flowerlike Nitrogen-Doped Microporous Carbon Nanosheets for High-Performance Li−S Batteries Xu-Jia Hong,† Xue-Ying Tang,† Qin Wei,† Chun-Lei Song,† Shuang-Yin Wang,‡ Ren-Feng Dong,† Yue-Peng Cai,*,† and Li-Ping Si† †
School of Chemistry and Environment, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University, Guanghzou 510006, P. R. China ‡ College of Chemistry and Chemical Engineering, Hunan University, Changsha 410006, P. R. China S Supporting Information *
ABSTRACT: Lithium−sulfur (Li−S) battery is regarded as one of the most promising next-generation efficient energy storage systems because of its ultrahigh theoretical capacity of 1675 mAh/g and energy density of 2600 Wh/kg accompanied by the environmental benignity and abundance from natural sulfur. However, the insulating nature of sulfur and the dissolution of the polysulfides Li2Sn (4 ≤ n ≤ 8) seriously restrict its practical application. The metastable small sulfur molecules (S2‑4) stored in microporous carbon (pore size of
