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Sulfur/PAN/acetylene black composite prepared by a solution processing technique for lithium-sulfur batteries

机译:通过锂 - 硫磺电池溶液加工技术制备硫/平移/乙炔黑复合材料

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摘要

A sulfur/poly(acrylonitrile)-PAN/acetylene black-AB composite, comprising sulfur and PAN encapsulated in the pores of AB was prepared by a solution-based technique with dimethyl sulfoxide as the solvent. The composite was characterized by TGA, X-ray diffraction, FTIR, Raman, SEM, TEM, and BET studies. The composite exhibited a high discharge capacity of 1330 mAh/g in the first cycle. The AB additive plays multiple roles in the composite, acting as a conducting matrix for electron transport and as a porous framework that adsorbs and retains electrolyte. The presence of PAN along with the porous carbon matrix in the composite provides the necessary resilience to absorb strains due to volume expansion during cycling. The observed improved performance of the composite is primarily attributed to the small size and homogeneous distribution of sulfur in the composite. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46598.
机译:通过基于溶液的溶液制备硫/聚(丙烯腈)-PAN /乙炔黑AB复合材料,其包含硫磺和锅中包封在AB孔中的孔中,用二甲基砜作为溶剂制备。 复合材料的特征在于TGA,X射线衍射,FTIR,拉曼,SEM,TEM和BET研究。 在第一循环中,复合物在1330mAh / g的高放电容量上表现出1330mAh / g。 AB添加剂在复合材料中起多种作用,作为电子传输的导电矩阵,作为吸附和保留电解质的多孔框架。 在复合材料中存在平底锅以及多孔碳基质的存在提供了由于循环过程中的体积膨胀而吸收菌株的必要弹性。 所观察到的复合材料的改进性能主要归因于复合材料中硫的小尺寸和均匀分布。 (c)2018 Wiley期刊,Inc.J.Phill。 聚合物。 SCI。 2018,135,46598。

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