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Honeycomb polyaniline-dodecyl benzene sulfonic acid (hPANI-DBSA)/sulfur as a new cathode for high performance Li–S batteries
Journal of the Taiwan Institute of Chemical Engineers ( IF 5.7 ) Pub Date : 2018-03-21 , DOI: 10.1016/j.jtice.2018.03.004
Mohammad Reza Sovizi , Zohre Fahimi

In the last few years, there has been a growing interest in lithium–sulfur (Li–S) batteries due to their high theoretical capacity of 1672 mAh/g, long life cycle, and low cost. However, Li–S batteries have been plagued with fast capacity loss and dissolution and diffusion of the polysulfides. In this study, honeycomb polyaniline-dodecyl benzene sulfonic acid (hPANI-DBSA) was prepared through the breath figure (BF) method, then, sulfur was electrodeposited on hPANI-DBSA and used to investigate the electrochemical properties of the Li–S cells. The hPANI-DBSA/S exhibit a higher capacity and excellent reversible capacity of 873.5 mAh/g after 100 cycles at 0.1 C. An initial specific capacity of 848 mAh/g at 0.2 C and coulombic efficiency of 99.3% over 100 cycles was achieved. The results suggest that this approach can also be useful for applying the Li–S cathodes for use in high capacity lithium–sulfur batteries.



中文翻译:

蜂窝状聚苯胺-十二烷基苯磺酸(hPANI-DBSA)/硫作为高性能Li–S电池的新阴极

在过去的几年中,由于锂硫(Li–S)电池的理论容量高达1672 mAh / g,使用寿命长且成本低,因此人们对此越来越感兴趣。但是,Li-S电池困扰于快速的容量损失以及多硫化物的溶解和扩散。在这项研究中,通过呼吸图(BF)方法制备了蜂窝状聚苯胺-十二烷基苯磺酸(hPANI-DBSA),然后将硫电沉积在hPANI-DBSA上,用于研究Li-S电池的电化学性能。hPANI-DBSA / S在0.1 C循环100次后表现出更高的容量和873.5 mAh / g的优异可逆容量。在0.2 C的初始比容量为848 mAh / g,在100个循环中库仑效率达到99.3%。

更新日期:2018-03-21
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