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首页> 外文期刊>ACS applied materials & interfaces >Nitrogen-Doped Single-Walled Carbon Nanohorns as a Cost-Effective Carbon Host toward High-Performance Lithium Sulfur Batteries
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Nitrogen-Doped Single-Walled Carbon Nanohorns as a Cost-Effective Carbon Host toward High-Performance Lithium Sulfur Batteries

机译：氮掺杂的单壁碳纳米植物作为高性能锂硫电池的经济有效的碳主体

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摘要

Nitrogen-doped single-walled carbon nanohorns (NSWCNHs) are porous carbon material characterized by unique horn shape structures with high surface areas and good conductivity. Moreover, they can be mass-produced (tons/year) using a novel proprietary process technology making them an attractive material for various industrial applications. One of the applicatibns is the encapsulation of sulfur, which turns them as promising conductive host materials for lithium-sulfur batteries. Therefore, we explore for the first time the electrochemical performance of industrially produced N-SWCNHs as a sulfur-encapsulating conductive material. Fabrication of lithilim-sulfur cells based on NSWCNFIS with sulfur composite could achieve a remarkable initial gravimetric capacity of 1650 mA h g(-1), namely equal to 98.5% of the theoretical capacity (1675 mA h g), with an exceptional sulfur content as high as 80% in weight. Using cyclic chronopotentiornetry and impedance spectroscopy, we also explored the dissolution mechanism of polysulfides inside the electrolyte.
机译：氮掺杂的单壁碳纳米（NSWCNH）是多孔碳材料，其特征在于具有高表面积和良好导电性的独特喇叭形结构。此外，它们可以使用新颖的专有工艺技术来大规模生产（吨/年），使其成为各种工业应用的有吸引力的材料。其中一种应用是硫的封装，使它们作为锂 - 硫电池的有前途的导电主体材料。因此，我们首次探索工业生产的N-SWCNH的电化学性能作为硫封装的导电材料。基于NSWCNFI的锂illim-硫细胞用硫复合材料的制备可以实现1650 mA Hg（-1）的显着初始重量容量，即等于理论能力的98.5％（1675 mA Hg），具有优异的硫含量重量80％。使用循环时间亢进术和阻抗光谱，我们还探讨了电解质内部多硫化物的溶出机制。

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