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首页> 外文期刊>RSC Advances >A novel facile and fast hydrothermal-assisted method to synthesize sulfur/carbon composites for high-performance lithium–sulfur batteries
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A novel facile and fast hydrothermal-assisted method to synthesize sulfur/carbon composites for high-performance lithium–sulfur batteries

机译：一种新的舒适和快速水热辅助方法，用于合成高性能锂硫电池的硫/碳复合材料

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摘要

Hydrothermal-assisted sulfur impregnation method was first proposed to prepare sulfur/carbon (S/C) composites for lithium–sulfur (Li–S) battery applications. Comparing with the currently existing sulfur impregnation method, this facile one-pot method is proved to be energy-saving and time-saving, to have a sulfur content that is exactly controllable and to be environment-friendly. In the hydrothermal environment, sulfur would selectively diffuse into the pores of carbon hosts due to its high mobility, homogeneous dispersibility, hydrophobicity and carbon affinity. As a result, the S/C composite obtained from hydrothermal-assisted method under a low temperature of 120 °C and a short time of 2 hours exhibits a comparable battery performance to that obtained from the traditional melting method under 155 °C for 20 hours, which reached 1239 mA h g ~(?1) at 0.2C and 796 mA h g ~(?1) at even 1C between 1.85–2.8 V, being rather suitable for large-scale manufacture and commercial development.
机译：首先提出水热辅助硫浸渍方法以制备用于锂 - 硫（LI-S）电池应用的硫/碳（S / C）复合材料。与目前现有的硫浸渍方法相比，该容易的单壶方法被证明是节能和节能的，具有完全可控的硫含量和环境友好。在水热环境中，由于其高迁移率，均匀的分散性，疏水性和碳亲和力，硫将在碳宿主中选择性地扩散到碳宿主中。结果，在120℃的低温下从水热辅助方法获得的S / C复合材料和2小时的短时间表现出与155℃下的传统熔化方法获得的相当电池性能20小时，该达到0.2℃和796mA Hg〜（α1）达到1239 mA Hg〜（α1），甚至在1.85-2.8V之间，相当适合大规模制造和商业开发。

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