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题名: H2S + SO2 produces water-dispersed sulfur nanoparticles for lithium-sulfur batteries
作者: Liu, Donghai;  Zhang, Chen;  Xu, Zhao;  Zhang, Lei;  Lv, Wei;  Zou, Xiaolong;  Kang, Feiyu;  Zhi, Linjie;  Cheng, Hui-Ming;  Yang, Quan-Hong
发表日期: 2017-11-1
摘要: Sulfur shows totally opposite faces in environmental and energy issues. Sulfur containing gases, H2S and SO2, are dominant air pollutants, while sulfur plays as the clean energy carrier for Li-Sulfur (Li-S) batteries. Herein, through confining the gaseous comproportionation reaction in water, between H2S and SO2 that normally produces uncontrollable aggregates, we develop a completely clean approach to convert the air pollutants into water-dispersed sulfur nanoparticle (WDS). The WDS is contaminant-free, size-controllable, and more promisingly solution processable, and is thus ideal for achieving solution hybridization with other materials for various applications. As a typical example, an aqueously fabricated WDS/carbon nanotube composite delivers the theoretical capacity of sulfur at 0.5 A g(-1), and a capacity of similar to 750 mAh g(-1) even at a high current density of 5.0 A g(-1). In addition to the normal use of sulfur as cathode, a new-concept WDS/carbon interlayer with a low sulfur content has been designed to inhibit the shuttling of polysulfides, greatly improving the cycling performance of the Li-S battery. The proposed approach gives a good example to turning pollutants into clean energy carriers by green chemistry.
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Recommended Citation:
Liu, Donghai,Zhang, Chen,Xu, Zhao,et al. H2s + So2 Produces Water-dispersed Sulfur Nanoparticles For Lithium-sulfur Batteries[J]. Elsevier Science Bv,2017,41:665-673.

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