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题名: A Dual-Function Na2SO4 Template Directed Formation of Cathode Materials with a High Content of Sulfur Nanodots for Lithium-Sulfur Batteries
作者: Luo, Chong;  Lv, Wei;  Deng, Yaqian;  Zhou, Guangmin;  Pan, Zheng-Ze;  Niu, Shuzhang;  Li, Baohua;  Kang, Feiyu;  Yang, Quan-Hong
发表日期: 2017-7-19
摘要: The sulfur content in carbon-sulfur hybrid using the melt-diffusion method is normally lower than 70 wt%, which greatly decreases the energy density of the cathode in lithium-sulfur (Li-S) batteries. Here, a scalable method inspired by the commercialized production of Na2S is used to prepare a hierarchical porous carbon-sulfur hybrid (denoted HPC-S) with high sulfur content (approximate to 85 wt%). The HPC-S is characterized by the structure of sulfur nanodots naturally embedded in a 3D carbon network. The strategy uses Na2SO4 as the starting material, which serves not only as the sulfur precursor but also as a salt template for the formation of the 3D carbon network. The HPC-S cathode with such a high sulfur content shows excellent rate performance and cycling stability in Li-S batteries because of the sulfur nanoparticles, the unique carbon framework, and the strong interaction between them. The production method can also be readily scaled up and used in practical Li-S battery applications.
刊名: SMALL
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Luo, Chong,Lv, Wei,Deng, Yaqian,et al. A Dual-function Na2so4 Template Directed Formation Of Cathode Materials With A High Content Of Sulfur Nanodots For Lithium-sulfur Batteries[J]. Small,2017,13(27):-.

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